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GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Description
The GM66100/1/2 series are 1A ultra low-dropout linear voltage regulators that provide low-voltage, high output current from an extremely small package. The GM66100/1/2 offers extremely low dropout (typically 410 m V at 1A) and low ground current (typically 12mA at 1A). The GM66100 offers 3 Lead packages with a fixed output voltage options while GM66101/2 offer SO8 packages for fixed and adjustable output voltages accordingly. The GM66100/1/2 is ideal for PC add-in cards that need to convert from standard 5V to 3.3V, 3.3V to 2.5V or 2.5V to 1.8V. A guaranteed maximum dropout voltage of 630mV over all operating conditions allows the GM66100/1/2 provide 2.5V from a supply as low as 3.13V and 1.8V from a supply as low as 2.43V. The GM66100/1/2 is fully protected with over current limiting, thermal shutdown, and reversedbattery protection.
Features
Fixed and adjustable output voltages Typical 410mV Dropout Voltage @ 1A 1A minimum guaranteed output current Accurate 1% Guaranteed Tolerance Current limiting and thermal shutdown Reverse-battery Protection Reversed leakage protection Fast Transient Response
Application
High Efficiency Linear Regulators Ideal for 3.0V to 2.5V conversion Ideal for 2.5V to 1.8V conversion Battery Powered Equipment Automotive Electronics Post Regulators for Switching Supplies
Typical Application Circuits
GM66100-2.5 VIN 3.3V Enable VIN Gnd VOUT 10uF VOUT 2.5V Shutdown VIN 3.3V GM66101-2.5 Enable Flag Error Flag Output VOUT 2.5V
VIN
Gnd
VOUT 10uF
GM66102V2.02
2.5V/1A Regulator
2.5V/1A Regulator with Error Flag
GM66102 Enable VIN Gnd VOUT R1 VIN 2.5V Adj R2 10uF VOUT 1.5V
Enable Shutdown
1.5V/1A Adjustable Regulator www.gammamicro.com.tw
2
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Marking Information and Pin Configurations (Top View) GM66100
TO 252 (D-PAK) TO 263 (D2-PAK) TO 220 SOT223
GM66100G VVAYWW
GM66100G VVAYWW GM66100G VVAYWW GM66100G VVAYWW 2. GND 1. VIN 3. VOUT 1.VIN 3. VOUT 2. GND
G: Green Product VV: Fixed Output (15 = 1.5V, 25 = 3.3V...) A: Assembly / Test site code Y: Year WW: Week
GM66101
SO8
G: Green Product VV: Fixed Output (15 = 1.5V, 25 = 3.3V...) A: Assembly / Test site code Y: Year WW: Week
GM66102
SO8
EN Gnd Gnd Gnd Gnd
G: Green Product A: Assembly / Test site code Y: Year WW: Week
VIN VOUT Adj
GM66100 V2.02
3
1. VIN
2. GND
3. VOUT
2.GND
1. VIN
3. VOUT
EN VIN VOUT Flag
Gnd Gnd Gnd Gnd
GM66101G VVAYWW GM66102G AYWW
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Ordering Information
Ordering Number Output Voltage Package Shipping
GM66100
GM66100-1.8TA3RG GM66100-1.8TB3TG GM66100-1.8TC3TG GM66100-1.8ST3RG GM66100-2.5TA3TG GM66100-2.5TA3RG GM66100-2.5TB3TG GM66100-2.5TC3RG GM66100-2.5ST3RG GM66100-3.3TA3RG GM66100-3.3TB3TG GM66100-3.3TC3TG GM66100-3.3ST3RG GM66100-5.0TA3RG GM66100-5.0TB3TG GM66100-5.0TC3RG GM66100-5.0ST3RG 1.8V 1.8V 1.8V 1.8V 2.5V 2.5V 2.5V 2.5V 2.5V 3.3V 3.3V 3.3V 3.3V 5.0V 5.0V 5.0V 5.0V TO-263 TO-220 TO-252 SOT-223 TO-263 TO-263 TO-220 TO-252 SOT223 TO-263 TO-220 TO-252 SOT-223 TO-263 TO-220 TO-252 SOT223 800 Units / Reel 50 Units/Tube 2,500 Units/Reel 2,500 Units/Reel 50 Units/Tube 800 Units / Reel 50 Units/Tube 2,500 Units / Reel 2,500 Units / Reel 800 Units / Reel 50 Units/Tube 2,500 Units/Reel 2,500 Units/Reel 800 Units / Reel 50 Units/Tube 2,500 Units / Reel 2,500 Units / Reel
Ordering Information (continued)
Ordering Number Output Voltage Package Shipping
GM66101
GM66101-1.8S8RG GM66101-2.5S8RG GM66101-3.3S8RG 1.8V 2.5V 3.3V SOP-8 SOP-8 SOP-8 2,500 Units/Reel 2,500 Units/Reel 2,500 Units/Reel
GM66102V2.02
Ordering Information (continued)
Ordering Number Output Voltage Package Shipping
GM66102
GM66102S8RG Adj SOP-8 2,500 Units/Reel
4
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Absolute Maximum Ratings (Note 1)
Rating Supply Voltage Enable Voltage Storage Temperature Range Lead Temperature (Soldering, 10 sec) ESD Symbol VIN VEN TSTG Value -20 to +20 +20 - 65 to 150 + 260 Note 3 Unit V V C C
Operating Ratings (Note 2)
Rating Supply Voltage Enable Voltage Maximum Power Dissipation Junction Temperature Range Package Thermal Resistances SOT223 SO8 Symbol VIN VEN PD(MAX) TJ JC -40 to 125 15 20 Value 2.25 to 16 2.25 to 16 Note 4 C C/W C/W Unit V V
GM66100 V2.02
5
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Block Diagram
VIN
18V Ref 1.24V
VOUT
Thermal Shut Down
Gnd GM66100 Fixed Regulator Block Diagram
VIN
18V
VOUT
FLAG EN
Ref
1.24V
Thermal Shut Down
Gnd GM66101 Fixed Regulator with Flag and Enable Block Diagram
VIN
18V Ref 1.24V
VOUT
GM66102V2.02
EN
Thermal Shut Down
Adj
Gnd GM66102 Adjustable Regulator with Enable Block Diagram
6
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS Electrical Characteristics:
(VIN = VOUT + 1V, VEN = 2.25V,Unless otherwise specified: TJ = 25C, Bold values are guaranteed across the full operating temperature range)
Parameter
Output Voltage
Condition
IO = 10mA 10mA < IO < 1A, VOUT + 1V < VIN < 8V
Symbol
VOUT VOI VOL VOUT/ T
Min
-1 -2
Typ
Max
1 -2
Unit
% % % ppm/J
Line Regulation Load Regulation Output Temperature Coefficient
IO = 10mA, VOUT + 1V < VIN < 16V VIN = VOUT + 1V, 10mA < IO < 1A
0.06 0.2 40 150
0.5 1.0 100 200 250
Note 5
IO = 100mA, VOI = -1%
Dropout Voltage, Note 6
IO = 500mA, VOI = -1% IO = 750mA, VOI = -1% IO = 1A, VOI = -1% IO = 100mA, VIN = VOUT + 1V
VDO
275 330 410 500 550 630 700
mV
A
Ground Current Note 7 Current Limit
IO = 500mA, VIN = VOUT + 1V IO = 750mA, VIN = VOUT + 1V IO = 1A, VIN = VOUT + 1V VOUT = 0V, VIN = VOUT + 1V
IGND
4 7 12 20 2.5 A mA
ICL
1.8
Enable Input
Parameter Enable Input Voltage Condition
Logic low (OFF) Logic High (ON) VEN = 2.25V
Symbol
VEN(low) VEN(high) IEN(low)
Min
Typ
Max
08
Unit
V
2.25 1 15 30 75 A
Enable Input Current
VEN = 0.8V
IEN(high)
2 4
GM66100 V2.02
7
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS Flag Output
Parameter Output Leakage Current Output Low Voltage Note 8 Low Threshold High Threshold Hysteresis
IEN(low) 1
Condition
VOH = 16V
Symbol
IFLG(leak)
Min
Typ
0.01
Max
1 2
Unit
A
VIN = 0.9V+VOUT Nominal, ICL=250A % of VOUT % of VOUT
VFLG (DO) 93
240
300 400
mV
99.2 1 15 30 75
%
Enable Input Current
VEN = 0.8V IEN(high)
2 4
A
GM66102 Only
Parameter Reference Voltage
Note 9
Condition
Symbol
Min
1.228
Typ
1.24
Max
1.252 1.265 1.277
Unit
VREF
1.215 1.203
V
Adjust Pin Bias Current Reference Voltage Temp Coefficient Note 5 Adjust Pin Bias Current Temp Coefficient
Note 1: Note 2: Note 3: Note 4: Note 5: Note 6: Note 7: Note 8: Note 9:
IADJ
40
80 120
A
VREF/ T
20
ppm/C
IADJ / T
0.1
99.2
nA/C
GM66102V2.02
8
Exceeding the absolute maximum ratings may damage the device. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions is recommended. PD(MAX) = (TJ(MAX) - TA)/JA, where JA is junction to ambient thermal resistance Output voltage temperature coefficient is VOUT(worst case)/(TJ(MAX)-TJ(MIN)), where TJ(MAX) is 125C and TJ(MIN) is 0C VDO = VIN - VOUT when VOUT decreases to 99% of its nominal output voltage with VIN = VOUT + 1V. For output voltage below 2.25V, dropout voltage is the input-to-output voltage differential with the minimum input voltage being 2.25V. Minimum input operating voltage is 2.25V. IGND is the quiescent current. IIN = IGND + IOUT For adjustable device and fixed device with VOUT > 2.5V VREF VOUT (VIN - 1V), 2.25V VIN 16V, 10mA IL 1A
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Application Information
The GM66100/1/2 is a low dropout voltage regulator suitable for applications which ultra low dropout performance is needed. Unlike older NPN-pass transistor designs, where the minimum dropout voltage is limited by the base-to-emitter voltage drop and collector-to-emitter saturation voltage, dropout performance of the PNP output of these devices is limited only by the low VCE saturation voltage. The GM66100/1/2 regulator is fully protected from damage due to fault conditions. Linear current limiting is provided. Output current during overload conditions is constant. Thermal shutdown disables the device when the die temperature exceeds the maximum safe operating temperature. Transient protection allows device (and load) survival even when the input voltage spikes above and below nominal. The output structure of these regulators allows voltages in excess of the desired output voltage to be applied without reverse current flow.
GM66100-x.x VIN CIN IN GND OUT COUT VOUT
Figure 1. Capacitor Requirements
Output Capacitor An output capacitor is required for the GM66100/1/2 to maintain stability and improve transient response. Proper capacitor selection is important to ensure proper operation. The output capacitor selection is dependent upon the ESR (equivalent series resistance) of the output capacitor to maintain stability. When the output capacitor is 10F or greater, the ESR value of the output capacitor should be less than 2 for the purpose of transient response improvement as well as stability. Ultra-low-ESR capacitors (<100m), such as ceramic chip capacitors, may promote instability. A low-ESR solid tantalum capacitor works extremely well and provides good transient response and stability over temperature. Aluminum electrolytes can also be used, as long as the ESR of the capacitor is <2. The value of the output capacitor can be increased without limit. Higher capacitance values help to improve transient response and ripple rejection and reduce output noise. Input Capacitor An input capacitor of 1F 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 chip capacitors can be used for bypassing. Larger values will help to improve ripple rejection by bypassing the input to the regulator, further improving the integrity of the output voltage. Error Flag The GM66101 features an error flag (FLG), which monitors the output voltage and sends out an error signal when the output voltage drops 5% below its expected value. The error flag is an open-collector output that pulls low under fault conditions and may sink up to 10mA. Low output voltage signifies a number of possible problems, including an over current fault (the device is in current limit) or low input voltage. The flag output is inoperative during over temperature conditions. A pull-up resistor from FLG to either V!N or VOUT is required for proper operation. For information regarding the minimum and maximum values of pull-up resistance, refer to the graph in the typical characteristics section of the data sheet.
GM66100 V2.02
9
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Enable Input The GM66101 and GM66102 feature an active-high enable input (EN) which allows on-off control of the regulator. The EN input has TTL/CMOS compatible thresholds for simple logic interfacing. EN may be directly tied to VIN and pulled up to the maximum supply voltage. Transient Response and 3.3V to 2.5V or 2.5V to 1.8V Conversion The GM66100 series has excellent transient response to variations input voltage and load current. The device has been designed to respond quickly to load current variations and input voltage variations. Large output capacitors are not required to obtain this performance. A standard 10F output capacitor, preferably tantalum, is all that is required. Larger values help to improve performance even further. By virtue of its low-dropout voltage, this device does not saturate into dropout as readily as similar NPNbased designs. When converting from 3.3V to 2.5V or 2.5V to 1.8V, the NPN based regulators are already operating in dropout, with typical dropout requirements of 1.2V or greater. To convert down to 2.5V or 1.8V without operating in dropout, NPN based regulators require an input voltage of 3.7V at the very least. The GM66100 regulator will provide excellent performance with an input as low as 3.0V or 2.5V respectively. This gives the PNP based regulators a distinct advantage over older, NPN based linear regulators. Minimum Load Current The GM66100/1/2 regulator is specified between finite loads. If the output current is too small, leakage currents dominate and the output voltage rises. A 10mA minimum load current is necessary for proper regulation. Adjustable Regulator Design
Enable Shutdown VIN
GM66102 Enable VIN Gnd VOUT R1 Adj R2 COUT VOUT
Figure 2. Adjustable Regulator with Resistors VOUT = 1.24V x (1+ R1/R2) The GM66102 allows programming the output voltage anywhere between 1.24V and the 16V maximum operating rating of the family. Two resistors are used. The resistor values are calculated by: R1 = R2 x (VOUT/1.24 - 1) Where VOUT is the desired output voltage. Figure 2 shows component definition. Applications with widely varying load currents may scale the resistors to draw the minimum load current required for proper operation (see above).
GM66102V2.02
10
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Package Outline Dimensions - SOT223
0.248 - 0.264 (6.30 - 6.71) 0.116 - 0.124 (2.95 - 3.15) 0.010 - 0.014 (0.25 - 0.36)
- 16 10
0.264 - 0.287 (6.71 - 7.29) 0.130 - 0.146 (3.30 - 3.71) 0.071 (1.8) MAX 0.025 - 0.033 (0.64 - 0.84) 0.81 (4.6)NOM
0.0008 - 0.0040 (0.0203 - 0.1016) 10 16 0.012 (0.31) 0.090 (2.29) 0.033 - 0.041 (0.84 - 1.04) NOM 10 MAX
MIN
NOM
Package Outline Dimensions - TO252
0.039 - 0.050 (1.020 - 1.270) 0.055 - 0.080 (1.400 - 2.030) 0.018 - 0.023 (0.460 - 0.580)
0.205 - 0.215 (5.210 - 5.460)
SEATING PLAN
0.210 - 0.228 (5.330 - 5.800)
0.370 - 0.410 (9.400 - 10.420)
0.030 - 0.045 (0.760 - 1.140)
0.018 - 0.023 (0.460 - 0.580)
0.180 (4.570) TYP
GM66100 V2.02
11
0.090 (2.285) TYP
0.045 - 0.060 (1.150 - 1.520)
0.020 (0.510) MIN
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Package Outline Dimensions - TO263
0.390 - 0.415 (9.906 - 10.541) 0.105 - 0.180 (4.191 - 4.572)
0.045 - 0.055 (1.143 - 1.397)
0.060 (1.524) TYP
15 TYP
0.330 - 0.370 (8.382 - 9.398)
0.143 + 0.012 0.143 - 0.002 (3.632 + 0305) (3.362 - 0.508)
0.059 (1.499) TYP 0.050 +/- 0.012 (1.270 +/- 0.305) 0.020 - 0.039 (0.510 - 0.990)
0.090 - 0.110 (2.286 - 2.794)
0.050 (1.270)
0.013 - 0.023 (0.330 - 0.584)
Package Outline Dimensions - SO 8
0.189 - 0.197 (4.800 - 5.004)
0.228 - 0.244 (5.791 - 6.198) 0.016 - 0.050 (0.406 - 0.270)
D
0.014 - 0.020 (0.356 - 0.508)
0.050 (1.270) TYP 0.053 - 0.059 (1.346 - 1.753)
0.150 - 0.157 (3.810 - 3.988)
SEATING PLAN
0.004 - 0.010 (0.012 - 0.254)
0.008 - 0.010 (0.203 - 0.254)
8.0 MAX
GM66102V2.02
12
GM66100 Series
1.0A ULTRA LOW DROPOUT VOLTAGE REGULATORS
Ordering Number
GM 66100 -1.8
APM Gamma Micro Circuit Type Output Voltage 1.8 2.5 3.3 5.0 = = = = 1.8V 2.5V 3.3V 5.0V
TA3
Package Type TA3: TO263 TB3: TO220
R
Shipping Type R:Taping& Reel T: Tube
G
Blank: Pb-free G:Green
GM 66101 -1.8
APM Gamma Micro Circuit Type Output Voltage 1.8 2.5 3.3 5.0 = = = = 1.8V 2.5V 3.3V 5.0V
S8
Package Type S8: SOP-8
R
Shipping Type R:Taping& Reel T:Tube
G
Blank: Pb-free G:Green
GM 66102
APM Gamma Micro Circuit Type Output Voltage Adj
S8
Package Type S8: SOP-8
R
Shipping Type R:Taping& Reel T:Tube
G
Blank: Pb-free G:Green
Note: Pb-free products: RoHS compliant and compatible with the current require-ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes with 100% matte tin (Sn) plating. Lead-free (RoHS compliant)
Green products:
8 10 6
GM66100 V2.02
1
Halogen free(Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight)

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