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AP7173
1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START
Features
* * * * * * * * * * * Low VIN and wide VIN range: 1.0V to 5.5V Bias voltage (VVCC) range: 2.7V to 5.5V Low VOUT range: 0.8V to 3.3V Low dropout: 165mV typical at 1.5A, VVCC = 5V 2% accuracy over line, load and temperature range Power-Good (PG) output for supply monitoring and for sequencing of other supplies Programmable soft-start provides linear voltage startup Bias supply permits low VIN operation with good transient response Stable with any output capacitor 2.2F DFN3030-10 and SOP-8L-EP: available in "Green" molding compound (No Br, Sb) Lead-free finish/ RoHS Compliant (Note 1)
General Description
The AP7173 is a 1.5A low-dropout (LDO) linear regulator that features a user-programmable soft-start, an enable input and a power-good output. The soft-start reduces inrush current of the load capacitors and minimizes stress on the input power source during start-up. The enable input and power-good output allow users to configure power management solutions that can meet the sequencing requirements of FPGAs, DSPs, and other applications with different start-up and power-down requirements. The AP7173 is stable with any type of output capacitor of 2.2F or more. A precision reference and feedback control deliver 2% accuracy over load, line, and operating temperature ranges. The AP7173 is available in both DFN3030-10 and SOP-8L-EP packages.
Applications
* * * * * PCs, Servers, Modems, and Set-Top-Boxes FPGA Applications DSP Core and I/O Voltages Post-Regulation Applications Applications With Sequencing Requirements
Ordering Information
AP 7173 - X X X
Package FN : DFN3030-10 SP : SOP-8L-EP
Lead Free G : Green
Packing -7/13 : Tape & Reel
Device AP7173-FN AP7173-SP
Notes:
Package Code FN SP
Packaging (Note 2) DFN3030-10 SOP-8L-EP
7"/13" Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 2500/Tape & Reel -13
1. RoHS revision 13.2.2003. Glass and high temperature solder exemptions applied, see EU Directive Annex Notes 5 and 7. 2. Pad layout as shown on Diodes Inc. suggested pad layout document can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
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1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START
Pin Assignments
( Top View )
1 2 3 4 5
( Top View )
IN IN PG VCC EN
10 9 8 7 6
OUT OUT FB SS GND
IN PG VCC EN
1 2 3 4
8 7 6 5
OUT FB SS GND
DFN3030-10
SOP-8L-EP
Pin Descriptions
Pin Name
IN
PIN # SOP-8L-EP
1
DFN3030-10
1, 2
Description
Power Input pin. Power-Good pin, open-drain output. When the VOUT is below the PG threshold the PG pin is driven low; when the VOUT exceeds the threshold, the PG pin goes into a high-impedance state. To use the PG pin, use a 10k to 1M pull-up resistor to pull it up to a supply of up to 5.5V, which can be higher than the input voltage. Bias Input pin, provides input voltage for internal control circuitry. This voltage should be higher than the VIN. Enable pin. This pin should be driven either high or low and must not be floating. Driving this pin high enables the regulator, while pulling it low puts the regulator into shutdown mode. Ground. Soft-Start pin. Connect a capacitor between this pin and the ground to set the soft-start ramp time of the output voltage. If no capacitor is connected, the soft-start time is typically 100S. Feedback pin. Connect this pin to an external voltage divider to set the output voltage. Regulated Output pin. Solder this pad to large ground plane for increased thermal performance.
PG
2
3
VCC EN GND SS FB OUT Thermal Pad
3 4 5 6 7 8 --
4 5 6 7 8 9, 10 --
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1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START
Block Diagram
IN
OUT
EN
Gate Driver
Current Limit and Thermal Shutdown
VCC + PG + 0.72V 0.8V
SS
FB
GND
Typical Application Circuit
R3
VOUT
VIN
IN OUT FB R1 C2 C1 PG VCC C3 EN
VVCC
AP7173
SS GND CSS
R2
Figure 1. Typical Application Circuit (Adjustable Output)
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1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START
Typical Application Circuit
(Continued)
Table 1. Resistor Values for Programming the Output Voltage (Note 3) R1 (k) Short 0.619 1.13 1.37 1.87 2.49 4.12 3.57 3.57 3.57 R2 (k) Open 4.99 4.53 4.42 4.99 4.99 4.75 2.87 1.69 1.15 VOUT (V) 0.8 0.9 1 1.05 1.1 1.2 1.5 1.8 2.5 3.3
(Note: 3) VOUT = 0.8 x (1 + R1 / R2)
Table 2. Capacitor Values for Programming the Soft-Start Time (Note 4) CSS Open 270pF 560pF 2.7nF 5.6nF 0.01F SOFT-START TIME 0.1ms 0.5ms 1ms 5ms 10ms 18ms
-7
(Note: 4) tSS(s) = 0.8 x CSS(F) / (4.4 x 10 )
Figure 2. Turn-On Response
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1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START
Absolute Maximum Ratings
Symbol ESD HBM ESD MM VIN, VVCC VEN VPG VSS VFB VOUT IOUT TJ TST
Notes:
(Note 5) Ratings Unit
Parameter Human Body Model ESD Protection Machine Model ESD Protection Input Voltage Range Enable Voltage Range Power-Good Voltage Range Soft-Start Voltage Range Feedback Voltage Range Output Voltage Range Maximum Output Current Junction Temperature Range Storage Junction Temperature Range
4000 V 350 V -0.3 to +6 V -0.3 to +6 V -0.3 to +6 V -0.3 to +6 V -0.3 to +6 V -0.3 to VIN +0.3 V Internally Limited -40 to +150 C -65 to +150 C
5. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Recommended Operating Conditions
Symbol VIN VVCC IOUT TA
Notes
Parameter Input Voltage (Note 6) Bias Voltage Output Current Operating Ambient Temperature
Min 1.0 2.7 0 -40
Max 5.5 5.5 1.5 85
Unit V V A C
6. At VIN =1V, the maximum load currents may be lower than 1.5A.
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Electrical Characteristics
At VEN = 1.1V, VIN = VOUT + 0.5V, CVCC = 0.1uF, CIN = COUT = 10uF, IOUT = 50mA, VVCC = 5.0V, and TA = -40C to +85C, unless otherwise noted. Typical values are at TA = +25C.
Symbol VIN VVCC VREF VOUT
VOUT /VIN / VOUT VOUT /VOUT /IOUT
VDO ICL ISHORT IVCC ISHDN IFB
PSRR
TST ISS VEN, HI VEN, LO VEN, HYS IEN VPG, TH VPG, HYS VPG, LO IPG, LKG TSD JA
Notes:
Parameter Test Conditions Input Voltage Range Bias Pin Voltage Range (Note 7) Internal Reference TA = +25 C (Adj.) Output Voltage Range VIN= 5V, IOUT= 1.5A 2.97VVVCC5.5V, Accuracy (Note 8) 50mAIOUT1.5A Line Regulation VOUT (NOM) + 0.5VIN, 5.5V Load Regulation 50mAIOUT1.5A IOUT = 1.5A,VVCC-VOUT(NOM)3.25V Dropout Voltage (Note 9) IOUT= 1.5A, VIN = VVCC Current Limit VOUT = 80% x VOUT (NOM) Short-Circuit Current VOUT < 0.2V Bias Pin Current Shutdown Supply VEN0.4V Current (IGND) Feedback Pin Current 1KHz, IOUT= 1A, Power-Supply Rejection VIN= 1.8V, VOUT= 1.5V (VIN to VOUT) 300KHz, IOUT =1A, VIN= 1.8V, VOUT =1.5V 1KHz, IOUT = 1A, Power-SupplyRejection VIN= 1.8V, VOUT =1.5V (VVCC to VOUT) 300KHz, IOUT = 1A, VIN= 1.8V, VOUT =1.5V Startup Time RLOAD for IOUT = 1.0A, CSS = open Soft-Start Charging VSS= 0.4V Current Enable Input High Level Enable Input Low Level Enable Pin Hysteresis Enable Pin Current VEN= 5V PG Trip Threshold VOUT decreasing PG Trip Hysteresis PG Output Low Voltage IPG= 1mA (sinking), VOUTVPG, TH Shutdown, temperature increasing Thermal Shutdown Temperature Reset, temperature decreasing DFN3030-10 (Note 10) Thermal Resistance Junction-to-Ambient SOP-8L-EP (Note 11)
Min VOUT + VDO 2.7 0.792 0.8 -2
Typ.
Max 5.5 5.5
Unit V V V V % %/V %/A mV V A A mA A A dB
0.8
0.808 3.3
0.5 0.03 0.09 165 1.5 3 1 1 1
2
2 0.6
270 1.7 4 2 50 1
-1
0.1 60 30 50
dB 30 100 440 1.1 0 50 0.1 90 3 0.1 +150 +130 38 30 5.5 0.4 1 94 0.3 1 S nA V V mV A %VOUT %VOUT V A C
o
85
C/W
7. VVCC should be higher or equal to VIN in this chip. 8. Tested at 0.8V; resistor tolerance is not taken into account. 9. Dropout is defined as the voltage from VIN to VOUT when VOUT is 3% below nominal. 10. Test condition for DFN3030-10: Device mounted on FR-4 substrate (2s2p), 2"*2" PCB, with 2oz copper trace thickness and large pad pattern. 11. Test condition for SOP-8L-EP: Device mounted on FR-4 substrate (2s2p), 2"*2" PCB, with 2oz copper trace thickness and large pad pattern.
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1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START
Typical Performance Characteristics
At TA = +25, VIN = VOUT(TYP) + 0.3V, VVCC = 5V, IOUT = 50mA, VEN = VIN, CIN = 1F, CVCC = 4.7F, and COUT = 10F, unless otherwise noted.
VIN LINE REGULATION
0.20 0.15 0.10
VVCC LINE REGULATION
0.5 0.4 0.3
change in Vout(%)
25 C
0.05 0.00 -0.05 -0.10
o
o
125 C
Vout(V)
o
0.2 0.1 0.0 -0.1
25 C
o
125 C
o
-40 C
-0.2 -0.3
-40 C
o
-0.15 -0.20 0.0
-0.4 -0.5 0.5
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Vin-Vout(V)
Vvcc-Vout(V)
Figure 3 LOAD REGULATION
1.0 0.8 0.6
o
Figure 4 LOAD REGULATION
25 C 125 C
Change Vout(%)
0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 50
o
-40 C
o
200
350
500
650
800
950
1100
1250
1400 1500
Iout(mA)
Figure 5 VIN DROPOUT VOLTAGE vs. IOUT AND TEMPERATURE(TA)
240 220 200
Figure 6 VIN DROPOUT VOLTAGE vs. (VVCC-VOUT) AND TEMPERATURE(TA)
300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VDropout(Vin-Vout)(V)
180 160 140 120 100 80 60 40 20
25 C 125 C
o
o
VDropout(Vin-Vout)(mV)
125 C
o
25 C -40 C
o
o
Iout=1.5A
-40 C
o
0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
Iout(mA)
Vvcc-Vout(V)
Figure 7
Figure 8
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Typical Performance Characteristics
VIN DROPOUT VOLTAGE vs. (VVCC-VOUT) AND TEMPERATURE(TA)
200 180
(Continued) VVCC DROPOUT VOLTAGE vs. IOUT AND TEMPERATURE(TA)
2000 1800
At TA = +25, VIN = VOUT(TYP) + 0.3V, VVCC = 5V, IOUT = 50mA, VEN = VIN, CIN = 1F, CVCC = 4.7F, and COUT = 10F, unless otherwise noted.
VDropout(Vvcc-Vout)(mV)
VDropout(Vin-Vout)(mV)
160 140 120 100 80 60 40
o
Iout=0.5A
1600
125 C
1400
o
o
25 C
125 C
o
-40 C
1200
1000
25 C
o
800
20 0 1.0
-40 C
1.5 2.0 2.5 3.0 3.5 4.0 4.5
600 0.00 0.25 0.50 0.75 1.00 1.25 1.50
o
Vvcc-Vout
Iout(A)
Figure 9 VIN PSRR vs. FREQUENCY
90 80 70 60 50 40 30 20 10 0 10
90
Figure 10 VVCC PSRR vs. FREQUENCY
Power Supply Rejection Ratio(dB)
80 70 60 50 40 30 20 10 0 10
Power Supply Rejection Ratio(dB)
Io=0.1A
Io=0.1A
Io=1.5A
Vin=1.8V Vout=1.2V Vvcc=5V Css=1nF
Vin=1.8V Vout=1.2V Vvcc=5V Css=1nF
Io=1.5A
100
1000
10000
100000
500000
100
1000
10000
100000
1000000
1E7
Frequency(Hz)
Frequency(Hz)
Figure 11 VIN PSRR vs. (VIN-VOUT)
Power Supply Rejection Ratio(dB)
90 80 70 60 50
Figure 12 LOW-LEVEL PG VOLTAGE vs. CURRENT
0.8
Vout=1.2V Iout=1.5A Css=1nF
VoL Low-Level PG Voltage(V)
2.50
0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 2 4 6 8 10 12
1KHz 10KHz 100KHz
40 30 20 10 0 0.00
500KHz
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
Vin-Vout(V)
PG Current(mA)
Figure 13
Figure 14
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Typical Performance Characteristics
VIN LINE TRANSIENT
(Continued) VVCC LINE TRANSIENT
At TA = +25, VIN = VOUT(TYP) + 0.3V, VVCC = 5V, IOUT = 50mA, VEN = VIN, CIN = 1F, CVCC = 4.7F, and COUT = 10F, unless otherwise noted.
Figure 15 OUTPUT LOAD TRANSIENT
Figure 16 TURN-ON RESPONSE
Figure 17
VCC PIN CURRENT vs. IOUT AND TEMPERATURE (TA)
2.0 1.8 1.6 1.4
o
Figure 18
VCC PIN CURRENT vs. VVCC AND TEMPERATURE (TA)
2.0 1.8
25 C
Ivcc(mA)
1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.0
125 C
1.4
o
1.6
25 C
o
125 C
o
Ivcc(mA)
1.2 1.0 0.8 0.6
-40 C
0.4 0.2
o
-40 C
o
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.0 2.0
2.4
2.8
3.2
3.6
4.0
4.4
4.8
5.2
5.6
Iout(A)
Vvcc(V)
Figure 19
Figure 20
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Typical Performance Characteristics
QUIESCENT CURRENT vs. IOUT
p g
1.25 1.20
(Continued) QUIESCENT CURRENT vs. VVCC
1.50
At TA = +25, VIN = VOUT(TYP) + 0.3V, VVCC = 5V, IOUT = 50mA, VEN = VIN, CIN = 1F, CVCC = 4.7F, and COUT = 10F, unless otherwise noted.
Quiescent Current(IGND) (mA)
1.15 1.10
Vout=1.2V
Quiescent Current(mA)
1.25
Io=0A Io=1.5A
Vin=2.5V
1.05 1.00 0.95 0.90
1.00
Vin=1.8V
0.85 0.80 0.75 0.00
0.75
Vin=1.8V Vout=1.2V
Io=0.5A
0.25
0.50
0.75
1.00
1.25
1.50
0.50 2.50
2.75
3.00
3.25
3.50
Iout(A)
Vvcc(V)
Figure 21 QUIESCENT CURRENT vs. TEMPERATURE
1.50
3.0 2.9
Figure 22 CURRENT LIMIT vs. (VVCC - VOUT)
Vvcc=5V
Quiescent Current(mA)
1.25
2.8
Current limit(A)
2.7 2.6 2.5 2.4 2.3
o o o
25 C
-40 C
1.00
Vvcc=3.3V
0.75
Vin=1.8V Vout=1.2V
125 C
2.2 2.1
0.50 -50
-25
0
25
50
o
75
100
125
2.0 1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Temperature( C)
Vvcc-Vout(V)
Figure 23 SOFT-START CHARGING CURRENT (I SS) vs. TEMPERATURE
500 475 450 425
Figure 24 POWER-UP/POWER-DOWN
Iss(nA)
400 375 350 325 300 -50
-25
0
25
50
o
75
100
125
Temperature( C)
Figure 25
Figure 26
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Application Note
BIAS VOLTAGE VVCC The AP7173 is a low VIN, low dropout regulator that uses an NMOS pass FET. The VCC pin must be connected to a DC bias supply VVCC for the internal control circuitry and the gate drive of the pass FET to function properly and to obtain low dropout. The VVCC needs to be equal to or higher than the VIN and in the range of 2.7V-5.5V. Figure 27 illustrates the typical application circuit for the AP7173.
R3
DROPOUT VOLTAGE The very low dropout makes the AP7173 well suited for high-current, low VIN/low VOUT applications. To achieve the specified low-dropout performance for such applications, the VCC pin should be connected to a separate supply of at least 3.25V higher than VOUT. Figure 28 shows an application circuit where VVCC is 5V and VOUT is 1.2V.
VVCC (5V) VIN (1.5V)
VOUT
VIN
IN OUT FB R1 C2 C1 PG VCC C3 EN
VCC
+
IN IOUT (1.5A) VOUT (1.2V) OUT R1 C2
+5V
AP7173
SS GND CSS
R2
_
Vref
AP7173
FB R2
Figure 27. Typical Application Circuit for AP7173 ADJUSTABLE OUTPUT VOLTAGE With an external voltage divider, the AP7173 can provide output voltage from 0.8V to 3.3V. R1 and R2 can be calculated for any output voltage using the following equation, where VREF=0.8 is the AP7173's internal reference voltage. Refer to Table 1 for resistor combinations for commonly used output voltages. For maximum voltage accuracy, R2 should be 5k. Figure 28. Typical Application Circuit for AP7173 Using Separate VCC and IN Rails For applications where low dropout is not required or a separate VVCC supply is not available, the IN and VCC pins can be tied together. In this situation, a voltage difference of at least 1.7V between the VVCC and VOUT has to be maintained for the VVCC to provide enough gate drive to the pass FET. Therefore, the VOUT needs to be 1.7V or more below VIN, as shown in Figure 29.
VIN (3.0V)
VOUT = VREF x (1 + R1/R2)
INPUT VIN AND BIAS VVCC CAPACITORS It is important to keep the IN and VCC pins clear of large ripples, glitches and other noises by connecting capacitors to the IN and VCC pins. The required capacitance on these pins is strongly dependent on source and wiring impedance of the supplies. To provide good decoupling for the input power supply VIN, it is recommended that a ceramic capacitor with capacitance of at least 1F is connected between the IN and GND pins at a location as close to them as possible. High quality, low ESR capacitors should be used for better performance. It is critical to provide good decoupling to the VCC pin for the AP7173's internal control circuitry to function properly. The minimum recommended capacitance for the VVCC is 1F when the VVCC and VIN are separate supplies. If the VIN and VVCC are connected to the same supply, the recommended minimum capacitance for VVCC is 4.7F. Again good quality, low ESR capacitors should be used for optimum performance. OUTPUT CAPACITOR The output capacitor affects the stability and transient response of the LDO. The AP7173 is designed to be stable for all types of output capacitors 2.2F, single or multiple in parallel. Using high-quality, low ESR capacitors and placing them close to the OUT and GND pins can improve perfomance.
VCC + _ Vref
IN IOUT (1.5A) VOUT (1.2V) OUT R1 FB R2 C2
AP7173
Figure 29. Typical Application Circuit for AP7173 Without an Auxiliary VCC Rail PROGRAMMABLE SOFT-START The AP7173 features a voltage-controlled soft-start that is programmable with an external capacitor (CSS). The AP7173 achieves a monotonic soft-start by tracking the voltage ramp of the external soft-start capacitor until the ramp voltage reaches the internal reference voltage. The relationship between the soft-start time and the soft-start charging current (ISS), soft-start capacitance (CSS), and the internal reference voltage (VREF) is
tSS = (VREF x CSS) / ISS
Refer to Table 2 for suggested soft-start capacitor values.
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Application Note
ENABLE/SHUTDOWN
(Continued)
The EN pin can be used with standard digital signals or relatively slow-ramping analog signals. Pulling the VEN below 0.4V turns the regulator off, while driving the VEN above 1.1V turns the regulator on. Figure 30 shows an example where an RC circuit is used to delay start the AP7173. If not used, the EN pin can be connected to the VCC or IN pin when the VIN is greater than 1.1V, as long as good decoupling measures are taken for the EN pin.
R3 VIN IN C1 VVCC VCC R4 C3 C5 EN PG OUT FB R1 C2 VOUT
For more effective protection against short-circuit failure, the AP7173 also includes a short-circuit foldback mechanism that lowers the current limit to a typical value of 1.0A when the VFB drops to below 0.2V. THERMAL PROTECTION Thermal shutdown limits the AP7173 junction temperature and protects the device from damage as a result of overheating. Thermal protection turns off the VOUT when the AP7173's junction temperature rises to approximately +150C, allowing it to cool down. When the junction temperature drops to approximately +130C, the output is re-enabled. Therefore, the thermal protection circuit may cycle on and off at a rate dependent on the power dissipation, thermal resistance, and ambient temperature. POWER DISSIPATION Thermal shutdown is intented to protect the AP7173 against abnormal overheating. For normal operation, excessive power dissipation should be avoided and good heatsinking should be provided. Power dissipation in the device is the product of the device dropout voltage and the load current,
AP7173
R2 SS GND CSS
Figure 30. Delayed Start Using an RC Circuit to Enable AP7173 POWER-GOOD The power-good (PG) pin is an open-drain output and can be pulled up through a resistor of 10k to1M to VIN, VOUT or any other rail that is 5.5V or lower. When the VOUT VPG,TH+VPG,HYS, the PG output is high-impedance; if the VOUT drops to below VPG,TH, VVCC 1.9V or the device is disabled, the PG pin is pulled to low by an internal MOSFET. OVER-CURRENT AND SHORT-CIRCUIT PROTECTION The AP7173 features a factory-trimmed, temperature and supply voltage compensated internal current limit and an over-current protection circuitry to protect the device against overload conditions. It limits the device current to a typical value of 3A and reduces the VOUT when the load tries to pull more current.
PD = (VIN - VOUT) x IOUT
As can be seen, power dissipation can be minimized by using the lowest input voltage necessary to achieve the required output voltage regulation. To ensure that the device junction temperature does not exceed the specified limit of 125C, an application should provide heat conduction paths that have junction-to-ambient thermal resistance lower than the calculated value here:
RJA = (125C -TA ) / PD
For the DFN package with exposed pad, the primary conduction path for heat is through the exposed pad to the printed circuit board (PCB). The pad should be attached to an appropriate amount of copper PCB area to ensure that the device does not overheat.
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Marking Information
(1) DFN3030-10
( Top View ) XX YMX XX : BA : AP7173 Y : Year 0~9 M : Month A~L X : A~Z : Green
Identification Code BA
Part Number AP7173
Package DFN3030-10
(2) SOP-8L-EP
( Top View )
8 5
Logo Part No . AP 7173 YY WW X X E
1 4
Internal code G : Green E : SOP-8L-EP Xth week : 01~ 52 Year : "07" = 2007 "08" = 2008
~
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Package Information
(1) DFN3030-10
(All Dimensions in mm)
0.57/0.60
0.08 C
0/0.05
0.10 C
0.15Typ.
Seating Plane C A 0.10 CAB
TOP MARK
2X-
0.25 A
Side View
B
2.9/3.1 2.3/2.5
R0 .30 0
(Pin #1 ID)
2.9/3.1
1.5/1.7
2X-
0.25 B
0.375Typ.
0.50Typ.
0.2/0.3
Bottom View
(2) SOP-8L-EP
Detail "A" Exposed pad
7~9
3.70/4.10
3.70/4.10
5.79/6.20
0.25/0.55
45 0.35max. 7~9 1 1.30/1.50 1.75max. 0.20typ 1 3.3Ref.
Bottom View
0.08/0.25
0.254
1.27typ 4.80/5.30 1
0.3/0.5
Gauge Plane Seating Plane
0.38/1.27
Detail "A"
8x-0.60
Exposed pad
6x-1.27 8x-1.55
Land Pattem Recommendation
5.4
AP7173 Rev. 4
14 of 15 www.diodes.com
2.4Ref.
MARCH 2008
(c) Diodes Incorporated
AP7173
1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START
Taping Orientation
Notes:
12. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf
IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.
AP7173 Rev. 4
15 of 15 www.diodes.com
MARCH 2008
(c) Diodes Incorporated

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