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MIC5159
Micrel
MIC5159
Programmable Current Limit Cap LDO Regulator Controller
General Description
Micrel's MIC5159 is a precision-voltage regulator controller. Used with an external P-Channel MOSFET, the MIC5159 forms a two-chip low-dropout regulator capable of driving a wide range of output currents. The MIC5159 operates from an input of 1.65V to 5.5V. The low input voltage allows the MIC5159 to operate off of high power 1.8V rails to generate lower voltages such as 1.5V. Features of the MIC5159 include enable input and currentlimit protection. As a Cap design, the MIC5159 is stable with ceramic output capacitors. The MIC5159 is packaged in the IttyBitty(R) SOT-23-6, and is offered in fixed and adjustable output voltages. Junction temperature range of the MIC5159 is from -40C to +125C.
Features
* * * * * * * * * * * * * * * * * * * Fast transient response Input voltage range: VIN 1.65V to 5.5V 1.0% initial output tolerance Fixed 1.8V or adjustable output voltage down to 1.25V Stable with ceramic output capacitor Capable up to 10A Excellent line and load regulation specifications Logic-controlled shutdown Programmable current limit Current-limit protection IttyBitty(R) SOT-23-6 package Available temperature range: -40C to +125C Ultra-high current, ultra-low dropout voltage regulator High-efficiency linear power supplies Low-voltage distributed power Fixed telecom Multimedia and PC power supplies Battery chargers Low-voltage DSP, microprocessor and microcontroller power supplies
Applications
Ordering Information
Part Number MIC5159BM6 MIC5159-1.8BM6 MIC5159-3.0BM6 Voltage ADJ. 1.8V 3.0V Marking LZAA LZ18 LZ30 Junction Temp. Range -40C to +125C -40C to +125C -40C to +125C Package SOT-23-6 SOT-23-6 SOT-23-6
Other voltages available. Contact Micrel for details.
Typical Application
Load Transient Response
VIN
Q1Q4 SUB15P0152 4 VOUT
5 1 3
OUTPUT VOLTAGE (100mV/div.)
U1 MIC5159BM6
10A
C1
EN IN IS
GATE FB GND
R1 C1 R2 C1
OUTPUT CURRENT (5A/div.) 100mA
GND
GND
VIN = 3.3V VOUT = 2.5V COUT = 200F TIME (20s/div.)
Adjustable Output Voltage
IttyBitty is a registered trademark of Micrel, Inc.
Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com
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Pin Configuration
ADJ
6
EN GATE
5 4
VO
6
EN GATE
5 4
Pin 1 Index
1
LZAA
2 3
Pin 1 Index
1
LZxx
2 3
IN GND IS
IN GND IS
SOT-23-6 (M6) Adjustable Voltage Version
SOT-23-6 (M6) Fixed Voltage Version
Pin Description
Pin Number 1 2 3 4 5 6 Pin Name IN GND IS GATE EN ADJ. VO Pin Function Input Voltage. Ground. Current Sense: IS must be tied to VIN pin if the current limit feature is not used. Gate drive of the external P-Channel MOSFET. Enable Input: Logic Level ON/OFF control. Logic high = ON; logic low = OFF. Adjustable Regulator Feedback Input: Connect to resistor voltage divider. Output Voltage: Connect to drain of P-Channel MOSFET to regulate output to proper voltage.
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Absolute Maximum Ratings(1)
Supply Voltage (VIN) .................................................. +6.0V Enable Input Voltage (VEN) ........................................ +6.0V Power Dissipation (PD(max)) ................................... Note 3 Storage Temperature (TS) ....................... -65C to +150C Lead Temperature (soldering, 5 sec.) ....................... 260C ESD Rating(4) ................................................................ 2kV
Operating Ratings(2)
Supply Voltage (VIN) ................................. +1.65V to +5.5V Enable Input Voltage (VEN) .............................. 0V to +5.5V Junction Temperature (TJ) ................ -40C TJ +125C Package Thermal Resistance SOT-23-6 (JA) .............................................. 235C/W
Electrical Characteristics(4)
TA = 25C with VIN = VOUT + 1V; VEN = 1.2V, CIN = COUT = 10F, ceramic, IOUT = 10mA; bold values indicate -40C < TJ < +125C; unless otherwise specified, Note 3 Parameter Output Voltage Accuracy Condition At 25C Over temperature range Output Voltage Line Regulation Output Voltage Load Regulation Ground Pin Current(6) VIN = VOUT + 1.0V to 5.5V IL = 10mA to 1.0A VEN 0.2V (MIC5159 OFF) VEN 1.2V (MIC5159 ON) Adjust Pin Bias Current Maximum VGS (PFET fully ON); VIN = 5.0V (PFET fully ON); VIN = 3.3V (PFET fully ON); VIN = 2.5V Current-Limit Threshold Start-up Time Enable Input Enable Input Threshold Regulator enabled Regulator shutdown Enable hysteresis Enable Pin Input Current Independent of state 20 50 0.01 1
Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. PD(max) = (TJ(max) - TA) / JA, where JA depends upon the printed circuit layout, see "Applications Information." 4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. 5. Specification for packaged product only. 6. IGND is the quiescent current. IIN = IGND + IOUT.
Min -1 -2 -0.1
Typ
Max +1 +2
Units % % %/V % A mA A V V V
0.007 0.2 15 10
+0.1 1.0 30 20 1
4.5 3.1 2.3 40 50 30 65 150
VIN - VIS VEN = VIN
mV s
1.2 0.2 250
V V mV nA A
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Typical Characteristics
Reference Voltage vs. Input Voltage
1.25
REFERENCE VOLTAGE (V)
Reference Voltage vs. Temperature
REFERENCE VOLTAGE (V) OUTPUT VOLTAGE (V)
Output Voltage vs. Load
1.24 1.239 1.238 1.237 1.236 VIN = 2.5V
1.245 1.24 1.235 1.23 1.225
1.65 2.15 2.65 3.15 3.65 4.15 4.65 5.15 5.65
1.24 1.239 1.238 1.237 1.236
VIN = 3.3V
1.22
1.235 1.234 1.233 1.232 1.231 1.23 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
1.235 1.234 1.233 1.232 1.231 1.23 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 LOAD (A)
INPUT VOLTAGE (V)
Quiescent Current vs. Input Voltage
10 9 8 7 6 5 4 3 2 1 0
QUIESCENT CURRENT (mA)
QUIESCENT CURRENT (mA)
Quiescent Current vs. Temperature
QUIESCENT CURRENT (mA)
Quiescent Current vs. Load
10 9 8 7 6 5 4 3 2 1 VIN = 2.5V 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 LOAD (A)
ILOAD = 10mA
2.15 2.65 3.15 3.65 4.15 4.65 5.15 5.65
10 9 8 7 6 5 4 3 2 1
VIN = 3.3V 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
1.65
INPUT VOLTAGE (V)
CURRENT LIMIT THRESHOLD (mV)
1.65
2.15
2.65
3.15
3.65
4.15
4.65
5.15
INPUT VOLTAGE (V)
Enable Threshold vs. Input Voltage
700
SHUTDOWN CURRENT (A)
5.65
60 58 56 54 52 50 48 46 44 42 40
CURRENT LIMIT THRESHOLD (mV)
Current Limit Threshold vs. Input Voltage
Current Limit Threshold vs. Temperature
60 ENABLE THRESHOLD (mV) 58 56 54 52 50 48 46 44 42 40 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) 800 700 600 500 400 300 200 100
Enable Threshold vs. Temperature
EN on
EN off
0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
Shutdown Current vs. Input Voltage
20 18 16 14 12 10 8 6 4 2
1.65 2.15 2.65 3.15 3.65 4.15 4.65 5.15 5.65
ENABLE THRESHOLD (mV)
EN on 600 500 400 300 200 100 EN off
-40C 25C 85C
1.65
2.15
2.65
3.15
3.65
4.15
4.65
5.15
INPUT VOLTAGE (V)
5.65
0
0
INPUT VOLTAGE (V)
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Functional Characteristics
Load Transient Response
OUTPUT VOLTAGE (100mV/div.) OUTPUT VOLTAGE (100mV/div.)
Enable Characteristics
2A
OUTPUT CURRENT (1A/div.)
VIN = 1.8V VOUT = 1.5V COUT = 100F TIME (20s/div.)
ENABLE VOLTAGE (1V/div.)
10mA
VIN = 3.3V VOUT = 1.8V
TIME (20s/div.)
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Functional Diagram
VIN RS VOUT IS GATE
Buffer
ISNS Amplifier IN VREF Enable EN
Error Amplifier
VOUT
VREF
GND
Block Diagram -- Fixed Output Voltages
VIN
RS VOUT IS GATE R1 Buffer ADJ. ISNS Amplifier IN VREF Enable EN VREF Error Amplifier R2
Block Diagram -- Adjustable Output Voltages
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According to the above calculation, the minimum RDS(ON) is 130m for a 2.5V to 1.8V LDO with 5A of output current. For this design, the RDS(ON) for the FETs should maintain better than 130m over the required temperature, current, and voltage conditions. Placing two or more P-Channel FETs in parallel can reduce the total RDS(ON) of the regulator. This also aids thermal dissipation by sharing the current and heat between the multiple FETs. Thermal Considerations Linear regulators are simple to use. The most complicated design parameters to consider are thermal characteristics. Since the MIC5159 offers no thermal protection, thermal design requires the following application-specific parameters: * Maximum ambient temperature (TA) * Output current (IOUT) * Output voltage (VOUT) * Input voltage (VIN) First, calculate the maximum power dissipation of the regulator: PD = (VIN - VOUT) x IOUT Ground current can generally be ignored. The amount of power dissipated by ground current and input voltage is minimal. Minimum JA for the MOSFET can be calculated using the following formula:
Applications Information
The MIC5159 is a high performance voltage regulator controller. When used with an external P-Channel MOSFET and a tiny ceramic output capacitor, it forms a wide variety of simple, inexpensive ultra-low-dropout voltage regulators. Current Sense Resistor Selection A current sense resistor placed between the input and the current sense pin (IS) allows for programmability of the current limit. This resistor can simply be calculated by: 50mV RSENSE = IOUT Where IOUT is the maximum output current. For example, the current sense resistor for a 2.5VIN to 1.8VOUT, 5A, linear regulator calculates as follows: 50mV RSENSE = 5A RSENSE = 10m P-Channel MOSFET Selection The P-Channel MOSFET selected for use with the MIC5159 must satisfy the following requirements: * Input voltage * Gate threshold * Load current * Dropout voltage (input-to-output differential) * Thermal performance To prevent damage to the P-Channel MOSFET, the maximum input voltage (VIN(max)) must be less than its drainsource breakdown voltage (BVDS). In addition, the minimum input voltage (VIN(min)) must be greater than or equal to the gate threshold voltage (VGS) of the P-Channel MOSFET. For a given output current and dropout requirement, the ONresistance (RDS(ON)) of the P-Channel MOSFET must also be determined. The minimum RDS(ON) of the P-Channel MOSFET is calculated as follows:
(T (max) - TA ) JA = J PD
Where TJ (max) is equal to the maximum die temperature of the P-Channel. JA = JC + CS + SA Example For the same regulator, 2.5VIN to 1.8VOUT at 5A with an ambient temperature of 60C: PD = (2.5V - 1.8V) x 5A PD = 3.5W Where VIN is the maximum VIN and IOUT is the maximum IOUT. The P-Channel MOSFET must be able to dissipate 3.5W. The minimum JA to maintain a maximum TJ of 150C (max.) TJ according to a typical MOSFET data sheet is as follows:
3.5W JA = 25.71C/W The heatsink and MOSFET must have a combined thermal resistance to meet the above criteria. JA =
(V (min) - VOUT ) RDS(ON) = IN - RSENSE IOUT (max)
Where IOUT(max) is the maximum output current and RSENSE is the current sense resistor. For example, the MIC5159-1.8BM6 is used with an external MOSFET to form a 5A LDO with an input of 2.5V. Either a 2.5V or 1.8V gate threshold MOSFET can be selected. The minimum RDS(ON) is calculated as: (2.5V - 1.8V) RDS(ON) = - 10m 5A RDS(ON) = 130m
(150C - 60C)
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The typical thermal resistance from the junction to the case (JC) of a TO-263 (D2 pack) is 6C/W. Adding 0.2C/W for case to sink thermal resistance (CS), the heatsink must have a sink to ambient thermal resistance (SA) of: SA = JA- (JC + CS) SA = 25.71C/W - (6C/W + 0.2C/W) SA = 19.51C/W According to the calculations, the heatsink must have a SA of 19.51C/W or better. For a full discussion of heat sinking and thermal effects on voltage regulators, refer to the "Regulator Thermals" section of Micrel's Designing with Low-Dropout Voltage Regulators handbook. Short-Circuit Current Limit The above thermal design calculations apply to normal operation. In the case where the P-Channel MOSFET must survive extended periods of short-circuit current, another approach for thermal design must be considered. Due to the fact that the MIC5159 delivers constant current limiting, power dissipated by the MOSFET is equal to the input voltage multiplied by the maximum output current. Figure 1 shows a simple, inexpensive circuit that allows the current limiting to be re-entrant. This reduces power dissipation in current limited conditions. As the output voltage begins to drop, the differential voltage across the input and output increases. This pulls the current sense voltage lower, reducing the amount of output current to maintain 50mV across the sense resistor. This reduction in output current equates to a reduction in power dissipation in the MOSFET. Figures 2 and 3 show a comparison of linear current limiting versus the reentrant current limiting scheme implemented in Figure 1.
RVOUT 1k9 RVIN 109 RSENSE 25m9
Micrel
2.0 1.8 Constant Current Limit
OUTPUT VOLTAGE (V)
1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 Re-Entrant Current Limit 0
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
OUTPUT CURRENT (A)
Figure 2. Output Voltage Characteristics Re-Entrant Current Limit
5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 0 Constant Current Limiting
POWER DISSIPATION (W)
Re-Entrant Current Limiting
0.5 1 OUTPUT VOLTAGE (V)
1.5
Figure 3. Power Dissipation vs. Output Voltage Enable/Shutdown The MIC5159 comes with an active-high enable pin that allows the regulator to be disabled. Forcing the enable pin low disables the regulator and sends it into a low off-modecurrent state. Forcing the enable pin high enables the output voltage. This part is CMOS and the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. Output Capacitor The MIC5159 requires an output capacitor to maintain stability and improve transient response. Proper selection is important to ensure proper operation. The MIC5159 output capacitor selection is highly dependent upon the components and the application. With a very high gate charge (gate capacitance) MOSFET, the output requires a much larger valued ceramic capacitor for stability. As an alternative to a large valued ceramic capacitor, a smaller-valued tantalum capacitor can be used to provide stability. At higher load currents, lower RDS(ON) MOSFETs are used; these MOSFETs typically having much larger gate charge. If the application does not require ultra-low-dropout voltage, smaller values of ceramic capacitance may be used. Input Capacitor An input capacitor of 1.0F or greater is recommended when the device is more than 4 inches away from the bulk AC supply capacitance or when the supply is a battery. Small, surface mount, ceramic capacitors can be used for bypassing the input to the regulator, further improving the integrity of the output voltage. Larger input capacitors may be required depending on the impedance of the source and the output load requirements. 8 April 2004
3.3 VIN
Q1,2,3 Si4433DYx3
1.8 VOUT 1.5A
MIC5159-1.8BM6
C1 10F ISENSE GATE C2 47F
VIN
VOUT
Figure 1. Re-Entrant Current Limit
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MIC5159
Layout Considerations Input and output capacitor placement should be as close as possible to the input and output, respectively. Trace resistance between the current sense and the MOSFET source should be minimized. Trace resistance will increase dropout voltage. This is more of a factor at higher output currents. Also, a minimum amount of distance between the gate pin, on the MIC5159, and the P-Channel MOSFET gate is recommended. A long trace can create a small parasitic inductor. This, coupled to the gate capacitance of the MOSFET, can create a high frequency tank circuit. A small 50 resistor in series with the gate may be required to eliminate highfrequency noise.
Micrel
Adjustable Regulator Design The MIC5159 allows programming the output voltage anywhere between 1.235V to VIN. Two resistors are used. See Figure 4. The resistor values are calculated by:
V R1= R2 x OUT - 1 1.235
Where VOUT is the desired output voltage.
VIN RS
MIC5159-x.x
Si3445
VOUT COUT = 10F ceramic
IS IN EN
GATE ADJ GND
R1
R2
Figure 4. Adjustable Regulator Design
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3.3VIN to 1.25VOUT Conversion
IOUT 0.4A 0.75A 0.75A 1.25A 1.75A 1.75A 2.75A 3.75A COUT 10F 22F 10F 44F 44F 22F 44F 44F MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K
Designing with MIC5159
The following section details: * Application examples of possible input/output configurations with related schematics designator. * Schematics with "Bill of Materials" recommendation, dropout performance and maximum output current for each FET combination. * Further advice on MOSFET selection.
3.3VIN to 2.5VOUT Conversion
IOUT 1.0A 2.5A 2.5A 3.5A 5.0A 5.0A 7.5A 10.0A COUT 10F 22F 10F 44F 44F 22F 44F 44F MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K
2.5VIN to 1.8VOUT Conversion
IOUT 1.25A 2.5A 2.5A 4.0A 5.5A 5.5A 8.0A 11.0A COUT 10F 22F 10F 44F 44F 22F 44F 44F MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K
3.3VIN to 1.8VOUT Conversion
IOUT 0.6A 1.25A 1.25A 2.0A 2.5A 2.5A 3.75A 5.0A COUT 10F 22F 10F 44F 44F 22F 44F 4 F MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K
2.5VIN to 1.5VOUT Conversion
IOUT 1.0A 2.0A 2.0A 3.0A 4.0A 4.0A 6.0A 8.0A COUT 10F 22F 10F 44F 44F 22F 44F 44F MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K
3.3VIN to 1.5VOUT Conversion
IOUT 0.5A 1.0A 1.0A 1.5A 2.0A 2.0A 3.0A 4.25A COUT 10F 22F 10F 44F 44F 22F 44F 44F MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K
2.5VIN to 1.25VOUT Conversion
IOUT 0.75A 1.5A 1.5A 2.0A 3.0A 3.0A 4.5A 6.0A COUT 10F 22F 10F 44F 44F 22F 44F 4 F MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K
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1.8VIN to 1.5VOUT Conversion
IOUT 2.0A 4.0A 6.0A 7.0A(1)
Note: 1. For space constrained designs, a DPAK equivalent can be used in this application (SUD15P01-52). This is due to RDS(ON) limitation NOT power dissipation.
Micrel
1.8VIN to 1.25VOUT Conversion
Package TSOP-6 TSOP-6 SO-8 D2PAK Schematic A B G K IOUT 1.0A 1.5A 3.0A 3.0A 4.5A 6.0A 6.5A 9.0A 13.0A COUT 10F 10F 22F 10F 44F 44F 22F 88F 88F MOSFET Si3445DV Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package TSOP-6 SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic A C D H E F I J K
COUT 10F 22F 200F 44F
MOSFET Si3445DV Si3445DV x2 Si4403DY x2 SUB15P01-52 x4
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Schematic A
Input/Output Combination Examples
Input 1.8V 1.8V Output 1.5V 1.25V Maximum Current 2A 1A
INPUT-OUTPUT VOLTAGE (V)
VIN
Q1 Si3445DV
VOUT
6 5 4 3 2 Dropout 1 0 0 0.5 1 1.5 2 2.5 OUTPUT CURRENT (A) 3 Max. Power Dissipation at 60C TA
U1
5
MIC5159BM6
GATE FB GND
4 6 2
R3 49.9W
R1 10kW
C1 10mF 6.3V
EN IN IS
1 3
R2*
C2 10mF 6.3V
GND
GND
Application Circuit
Si3445DV SOA
Bill of Materials
Item C1 C2 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si3445DV MIC5159BM6 Manufacturer Murata(1) Murata Vishay Dale(2) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(4) Micrel, Inc.(5) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.5V; 9.76k Resistor, Size 0805(3) 1.8V; 21.5k Resistor, Size 0805(3) 1.5V; 46.4k Resistor, Size 0805(3) 1.25V; 825k Resistor, Size 0805(3) Qty. 1 1 1 1 1 1 1 1 1 1
R3 Q1 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET TSOP-6 Programmable Current Limit Cap LDO Regulator
1. Murata tel: 949-916-4000 2. Vishay Dale tel: 402-563-6866 3. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
4. Vishay Siliconix tel: 402-563-6866 5. Micrel, Inc. tel: 408-944-0800
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Schematic B
Input/Output Combination Examples
Input 1.8V Output 1.5V Maximum Current 4A
VIN
Q1 Si3445DV
Q2 Si3445DV
INPUT-OUTPUT VOLTAGE (V)
VOUT
6 5 4 3 2 Dropout 1 0 0 1 2 3 4 5 OUTPUT CURRENT (A) 6 Max. Power Dissipation at 60C TA
U1
MIC5159BM6
GATE FB GND
4 6
C1 10mF 6.3V
5
EN IN IS
R3 49.9W
R1 10kW
1
3
2
R2*
C2 22mF 6.3V/10V
GND
GND
Application Circuit
Si3445DV x2 SOA
Bill of Materials
Item C1 C2 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C2012X5RR0J106M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si3445DV MIC5159BM6 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Micrel, Inc.(6) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 22F, 6.3V Ceramic MLCC, Size 1210 22F, 10V Ceramic MLCC, Size 1210 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.5V; 9.76k Resistor, Size 0805(4) 1.8V; 21.5k Resistor, Size 0805(4) 1.5V; 46.4k Resistor, Size 0805(4) 1.25V; 825k Resistor, Size 0805(4) Qty. 1 1 1 1 1 1 1 1 1 1 2 1
R3 Q1, Q2 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET TSOP-6 Programmable Current Limit Cap LDO Regulator
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
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Schematic C
Input/Output Combination Examples
Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 1A 0.6A 0.5A 0.4A 1.25A 1A 0.75A 1.5A
INPUT-OUTPUT VOLTAGE (V)
VIN
Q1 Si4433DY
VOUT
6 5 4 3 2 1 0 0 0.5 1 1.5 OUTPUT CURRENT (A) 2 Dropout Max. Power Dissipation at 60C TA
U1
MIC5159BM6
GATE FB GND
4 6
C1 10mF
5
EN IN IS
R3 49.9W
R1 10kW
1
3
2
C2 10mF R2*
GND
GND
Application Circuit
Si4433DY SOA
Bill of Materials
Item C1 C2 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si4433DY MIC5159BM6 Manufacturer Murata(1) TDK(2) Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Micrel, Inc.(6) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 10k Resistor, Size 0805 *Output Voltage: *Output Voltage: *Output Voltage: *Output Voltage: 2.5V; 9.76k Resistor, Size 0805(4) 1.8V; 21.5k Resistor, Size 0805(4) 1.5V; 46.4k Resistor, Size 0805(4) 1.25V; 825k Resistor, Size 0805(4) Qty. 1 1 1 1 1 1 1 1 1 1
R3 Q1 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET SO-8 Programmable Current Limit Cap LDO Regulator
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
M9999-041204
14
April 2004
MIC5159
Micrel
Schematic D
Input/Output Combination Examples
Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V 1.8V Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.5V 1.25V Maximum Current 2.5A 1.25A 1A 0.75A 2.5A 2A 1.5A 2A 3A
VIN
Q1 Si4433DY
Q2 Si4433DY
INPUT-OUTPUT VOLTAGE (V)
VOUT
6 5 4 3 2 Dropout 1 0 0 1 2 3 OUTPUT CURRENT (A) 4 Max. Power Dissipation at 60C TA
U1
MIC5159BM6
GATE FB GND
4 6
C1 10mF 6.3V
5
EN IN IS
R3 49.9W
R1 10kW
1
3
2
R2*
C2 22mF 6.3V/10V
GND
GND
Application Circuit
Si4433DY x2 SOA
Bill of Materials
Item C1 C2 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si4433DY MIC5159BM6 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Micrel, Inc.(6) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 22F, 6.3V Ceramic MLCC, Size 1210 22F, 10V Ceramic MLCC, Size 1210 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.3V; 9.76k Resistor, Size 0805(4) 1.8V; 21.5k Resistor, Size 0805(4) 1.5V; 46.4k Resistor, Size 0805(4) 1.25V; 825k Resistor, Size 0805(4) Qty. 1 1 1 1 1 1 1 1 2 1
R3 Q1, Q2 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET SO-8 Programmable Current Limit Cap LDO Regulator
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
April 2004
15
M9999-041204
MIC5159
Micrel
Schematic E
Input/Output Combination Examples
Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 3.5A 2A 1.5A 1.25A 4A 3A 2A 4.5A
VIN
Q1 Si4433DY
Q2 Si4433DY
Q3 Si4433DY
VOUT
INPUT-OUTPUT VOLTAGE (V)
6 5 4 3 2 Dropout 1 0 0 1 2 3 4 5 OUTPUT CURRENT (A) 6 Max. Power Dissipation at 60C TA
U1
MIC5159BM6
GATE FB GND
4 6
C1 10mF 6.3V
5
EN IN IS
R3 49.9W
R1 10kW
1
3
2
R2*
C2 22mF 6.3V/10V
GND
GND
Application Circuit
Si4433DY x3 SOA
Bill of Materials
Item C1 C2 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si4433DY MIC5159BM6 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 22F, 6.3V Ceramic MLCC, Size 1210 22F, 10V Ceramic MLCC, Size 1210 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.5V; 9.76k Resistor, Size 1.8V; 21.5k Resistor, Size 1.5V; 46.4k Resistor, Size 1.25V; 825k Resistor, Size 0805(4) 0805(4) 0805(4) 0805(4) Qty. 1 1 1 1 1 1 1 1 3 1
R3 Q1, Q2, Q3 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET SO-8 Programmable Current Limit Cap LDO Regulator
Micrel, Inc. (6)
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
M9999-041204
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April 2004
MIC5159
Micrel
Schematic F
Input/Output Combination Examples
Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 5A 2.5A 2A 1.75A 5.5A 4A 3A 6.5A
VIN
Q1 Si4433DY
Q4 Q2 Q3 Si4433DY Si4433DY Si4433DY
INPUT-OUTPUT VOLTAGE (V)
VOUT
6 5 4 3 2 1 0 0 2 4 6 OUTPUT CURRENT (A) 8 Dropout Max. Power Dissipation at 60C TA
U1
MIC5159BM6
GATE FB GND
4 6
C1 10mF 6.3V
5
EN IN IS
R3 49.9W
R1 10kW
C2 22mF 6.3V/10V
1
3
2
R2*
C3 22mF 6.3V/10V
GND
GND
Application Circuit
Si4433DY x4 SOA
Bill of Materials
Item C1 C2 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si4433DY MIC5159BM6 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Micrel, Inc.(6) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 22F, 6.3V Ceramic MLCC, Size 1210 22F, 10V Ceramic MLCC, Size 1210 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.5V; 9.76k Resistor, Size 1.8V; 21.5k Resistor, Size 1.5V; 46.4k Resistor, Size 0805(4) 1.25V; 825k Resistor, Size 0805(4) 0805(4) 0805(4) Qty. 1 1 1 1 1 1 1 1 4 1
R3 Q1, Q2, Q3, Q4 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET SO-8 Programmable Current Limit Cap LDO Regulator
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
April 2004
17
M9999-041204
MIC5159
Micrel
Schematic G
Input/Output Combination Examples
Input 1.8V Output 1.5V Maximum Current 6A
VIN
Q1 Si4403DY
Q2 Si4403DY
INPUT-OUTPUT VOLTAGE (V)
VOUT
6 5 4 3 2 Dropout 1 0 0 1 2 3 4 5 6 7 8 9 10 OUTPUT CURRENT (A) Max. Power Dissipation at 60C TA
U1
MIC5159BM6
GATE FB GND
4 6
C1 10mF 6.3V
5
EN IN IS
R3 49.9W
R1 10kW
1
3
2
C2, C3, C4, C5, C6 47mF x 5 R2*
GND
GND
Application Circuit
Si4403DY x2 SOA
Bill of Materials
Item C1 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Micrel, Inc.(6) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 47F, 6.3V Ceramic MLCC, Size 1812 47F, 6.3V Ceramic MLCC, Size 1812 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.5V; 9.76k Resistor, Size 0805(4) 1.8V; 21.5k Resistor, Size 0805(4) 1.5V; 46.4k Resistor, Size 0805(4) 1.25V; 825k Resistor, Size 0805(4) Qty. 1 1 1 1 1 1 1 1 2 1
C2, C3 GRM43 ER60J476K C4, C5, C6 C4532X5R0J476M R1 R2 CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si4403DY MIC5159BM6
R3 Q1, Q2 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET SO-8 Programmable Current Limit Cap LDO Regulator
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
M9999-041204
18
April 2004
MIC5159
Micrel
Schematic H
Input/Output Combination Examples
Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V
Q1 SUB15P01-52
Maximum Current 2.5A 1.25A 1A 0.75A 2.5A 2A 1.5A 3A
INPUT-OUTPUT VOLTAGE (V)
VIN
VOUT
6 5 4 3 2 Dropout 1 0 0 0.5 1 1.5 2 2.5 3 3.5 4 OUTPUT CURRENT (A) Max. Power Dissipation at 60C TA
U1
5
MIC5159BM6
GATE FB GND
4 6 2
R3 49.9W
R1 10kW
C1 10mF 6.3V
EN IN IS
1 3
R2*
C2 10mF 6.3V
GND
GND
Application Circuit
SUB15P01-52 SOA
Bill of Materials
Item C1 C2 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F SUB15P01-52 MIC5159BM6 Manufacturer Murata(1) TDK(2) Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Micrel, Inc.(6) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.5V; 9.76K Resistor, Size 0805(4) 1.8V; 21.5K Resistor, Size 0805(4) 1.5V; 46.4k Resistor, Size 0805(4) 1.25V; 825k Resistor, Size 0805(4) Qty. 1 1 1 1 1 1 1 1 1 1
R3 Q1 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET TO-263 Programmable Current Limit Cap LDO Regulator
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
April 2004
19
M9999-041204
MIC5159
Micrel
Schematic I
Input/Output Combination Examples
Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V
Q1 SUB15P01-52
Maximum Current 5A 2.5A 2A 1.75A 5.5A 4A 3A 6.5A
Q2 SUB15P01-52
VIN
INPUT-OUTPUT VOLTAGE (V)
VOUT
6 5 4 3 2 Dropout 1 0 0 1234567 OUTPUT CURRENT (A) 8 Max. Power Dissipation at 60C TA
U1
MIC5159BM6
GATE FB GND
4 6
C1 10mF 6.3V
5
EN IN IS
R3 49.9W
R1 10kW
1
3
2
R2*
C2 22mF 6.3V/10V
GND
GND
Application Circuit
SUB15P01-52 x2 SOA
Bill of Materials
Item C1 C2 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F SUB15P01-52 MIC5159BM6 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Micrel, Inc.(6) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 22F, 6.3V Ceramic MLCC, Size 1210 22F, 10V Ceramic MLCC, Size 1210 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.5V; 9.76K Resistor, Size 0805 (4) 1.8V; 21.5K Resistor, Size 0805(4) 1.5V; 46.4k Resistor, Size 0805(4) 1.25V; 825k Resistor, Size 0805(4) Qty. 1 1 1 1 1 1 1 1 2 1
R3 Q1, Q2 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET TO-263 Programmable Current Limit Cap LDO Regulator
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
M9999-041204
20
April 2004
MIC5159
Micrel
Schematic J
Input/Output Combination Examples
Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 7.5A 3.75A 3A 2.75A 8A 6A 4.5A 9.5A
Q2 SUB15P01-52
VIN
Q1 SUB15P01-52
Q3 SUB15P01-52
INPUT-OUTPUT VOLTAGE (V)
VOUT
6 5 4 3 2 1 0 0 2 4 6 8 10 OUTPUT CURRENT (A) 12 Dropout Max. Power Dissipation at 60C TA
U1
MIC5159BM6
GATE FB GND
4 6
C1 10mF 6.3V
5
EN IN IS
R3 49.9W
R1 10kW
C2 22mF 6.3V/10V
1
3
2
R2*
C3 22mF 6.3V/10V
GND
GND
Application Circuit
SUB15P01-52 x3 SOA
Bill of Materials
Item C1 C2, C3 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F SUB15P01-52 MIC5159BM6 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Micrel, Inc.(6) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 22F, 6.3V Ceramic MLCC, Size 1210 22F, 10V Ceramic MLCC, Size 1210 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.5V; 9.76k Resistor, Size 1.8V; 21.5k Resistor, Size 1.5V; 46.4k Resistor, Size 0805(4) 1.25V; 825k Resistor, Size 0805(4) 0805(4) 0805(4) Qty. 1 1 1 1 1 1 1 1 3 1
R3 Q1, Q2 Q3 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET TO-263 Programmable Current Limit Cap LDO Regulator
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
April 2004
21
M9999-041204
MIC5159
Micrel
Schematic K
Input/Output Combination Examples
Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V 1.8V Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.5V 1.25V
Q2 SUB15P01-52 Q1 SUB15P01-52 Q3 SUB15P01-52
Maximum Current 10A 5A 4.25A 3.75A 11A 8A 6A 7A 13A
Q4 SUB15P01-52
VIN
INPUT-OUTPUT VOLTAGE (V)
VOUT
6 5 4 3 2 1 0 0 2.5 5 7.5 10 12.5 15 OUTPUT CURRENT (A) Dropout Max. Power Dissipation at 60C TA
U1
MIC5159BM6
GATE FB GND
4 6
C1 10mF 6.3V
5
EN IN IS
R3 49.9W
R1 10kW
C2 22mF 6.3V/10V
1
3
2
R2*
C3 22mF 6.3V/10V
GND
GND
Application Circuit
SUB15P01-52 x4 SOA
Bill of Materials
Item C1 C2, C3 R1 R2 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F SUB15P01-52 MIC5159BM6 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Description 10F, 6.3V Ceramic MLCC, Size 0805 10F, 6.3V Ceramic MLCC, Size 0805 22F, 6.3V Ceramic MLCC, Size 1210 22F, 10V Ceramic MLCC, Size 1210 10k Resistor, Size 0805 Output Voltage: Output Voltage: Output Voltage: Output Voltage: 2.5V; 9.76k Resistor, Size 1.8V; 21.5k Resistor, Size 1.5V; 46.4k Resistor, Size 1.25V; 825k Resistor, Size 0805(4) 0805(4) 0805(4) 0805(4) Qty. 1 2 1 1 1 1 1 1 4 1
R3 Q1, Q2 Q3, Q4 U1
Notes:
49.9 Resistor, Size 0805 P-Channel MOSFET TO-263 Programmable Current Limit Cap LDO Regulator
Micrel, Inc.(6)
1. Murata tel: 949-916-4000 2. TDK tel: 1-888-835-6646 3. Vishay Dale tel: 402-563-6866 4. To calculate other output voltage values:
R2 =
R1 VOUT -1 1.235
5. Vishay Siliconix tel: 402-563-6866 6. Micrel, Inc. tel: 408-944-0800
M9999-041204
22
April 2004
MIC5159
Micrel
Package Information
1.90 (0.075) REF 0.95 (0.037) REF
1.75 (0.069) 3.00 (0.118) 1.50 (0.059) 2.60 (0.102)
DIMENSIONS: MM (INCH) 3.00 (0.118) 2.80 (0.110) 1.30 (0.051) 0.90 (0.035) 10 0 0.15 (0.006) 0.00 (0.000) 0.20 (0.008) 0.09 (0.004)
0.50 (0.020) 0.35 (0.014)
0.60 (0.024) 0.10 (0.004)
SOT-23-6 (M6)
MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2004 Micrel, Incorporated.
April 2004
23
M9999-041204

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