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Global Mixed-mode Technology Inc.
G962
2A Low Dropout Regulator with Enable
Features
Adjustable Output from 1.2V to 4.8V Using External Resistors 1.5V, 1.8V and 2.5V options by Setting ADJ Pin Below 0.2V Fixed 2.5V, 3.3V and 5V Output for TO-252 Over current and over temperature protection 500mV dropout @2A Enable pin 10A quiescent current in shutdown Output recovery mode in OTP Connect ADJ to GND for fixed output mode TO-252 and TO-252-5 Package
General Description
The G962 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 2 Amps. Since it has superior dropout characteristics compared to regular LDOs, it can be used to supply 2.5V on motherboards or 1.5V, 1.8V on peripheral cards from the 3.3V supply thus allowing the elimination of costly heatsinks. An enable pin further reduces power dissipation while shut down. The G962 provides excellent regulation over variations in line, load and temperature. The G962 is available with 1.5V, 1.8V, 2.5V, 3.3V and 5V internally preset outputs.
Applications
Battery powered systems Motherboards Peripheral cards Set Top Boxes Notebook Computers
Ordering Information
ORDER NUMBER
G962-25T45U G962-33T45U G962-50T45U G962-15ADJTJU G962-18ADJTJU G962-25ADJTJU
ORDER NUMBER (Pb free)
G962-25T45Uf G962-33T45Uf G962-50T45Uf G962-15ADJTJUf G962-18ADJTJUf G962-25ADJTJUf
MARKING
G962-25 G962-33 G962-50 G962-15 G962-18 G962-25
TEMP. RANGE
-40C ~ +85C -40C ~ +85C -40C ~ +85C -40C ~ +85C -40C ~ +85C -40C ~ +85C
PACKAGE
TO-252 TO-252 TO-252 TO-252-5 TO-252-5 TO-252-5
Note: T4: TO-252 TJ:TO-252-5 U : Tape & Reel e.g. 18 denotes the 1.8V output voltage.
Pin Configuration
G962-XXT45
Typical Application Circuit
R3 VEN VIN IENH
G962
VEN VIN VO GND
Top View 1 2 3
VO R1 C1 4.7F C2 10F R2
ADJ
VIN
GND
VO
TO-252
Top View
1 2 3 4 5
VO =
VEN VIN GND VO ADJ
Volts R2 R2=12k is recommended R3 should be connected for current IENH restriction as VEN > VIN+0.3V
1.2 (R1+R2)
TO-252-5
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings (Note 1) Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V VEN Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . VIN+0.3V Power Dissipation Internally Limited (Note 2) Maximum Junction Temperature. . . . . . . . . . . . .150C Storage Temperature Range . . . . -65C TJ +150C Reflow Temperature (Soldering, 10 sec) . . . . . .260C Thermal Resistance Junction to Ambient, (JA) TO-252, TO-252-5 . . . . . . . . . . . . . . . . . . . . .95C/W Thermal Resistance Junction to Case, (JC) TO-252, TO-252-5. . . . . . . . . . . . . . . . . . . . . . 8C/W ESD Rating (Human Body Model) . . . . . . . . . . . . .2kV
Operation Conditions (Note 1) Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2V ~7V Temperature Range. . . . . . . . .. . . . . . -40C TA +85C
G962
Electrical Characteristics
VEN=VIN, VIN =5V, IO = 0.5A, CIN = 4.7F, COUT =10F, TA = TJ = 25C unless otherwise specified (Note 3) PARAMETER SYMBOL CONDITION MIN TYP MAX UNIT
Output Voltage Line Regulation Load Regulation Quiescent Current Ripple Rejection VO VIN=VO +0.7V, IO=10mA VO+0.7V < VIN < 5.5V, IO=10mA 10mA < IO < 2A VO=3.3V,VEN=VIN VEN=0V fi=120Hz, 1VP-P, IO=100mA G962-15, IOUT = 2A G962-18, IOUT = 2A G962-25, IOUT = 2A G962-33, IOUT = 2A G962-50, IOUT = 2A, VIN=6V (Note 4) Output Active Output Disabled VEN=0.4V VIN=2.2V, VADJ=VOUT, IO=10mA -2 ------------------------1.6 ----1.176 --VO 0.2 0.8 3 16 55 0.9 0.7 0.6 0.5 0.45 0.8 150 ------1.2 0.2 2 2 2 3.5 35 --1.1 0.9 0.7 0.6 0.55 ------0.4 20 1.224 --% % % mA A dB
IQ
Dropout Voltage
VD
V
Short Circuit Current Over Temperature VEN Voltage High VEN Voltage Low VEN Bias Current Low ADJ Reference Voltage ADJ Pin Threshold
VENH VENL IENL VREF
A C V V A V V
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics. Note2: The maximum power dissipation is a function of the maximum junction temperature, TJmax ; total thermal resistance, JA, and ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is (Tjmax-TA) / JA. If this dissipation is exceeded, the die temperature will rise above 150C and IC will go into thermal shutdown. Note3: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. Note4: The over temperature point is guarantee by design.
Definitions
Dropout Voltage The input/output voltage differential at which the regulator output no longer maintains regulation against further reductions in input voltage. Measured when the output drops 2% below its nominal value, dropout voltage is affected by junction temperature, load current and minimum input supply requirements. Line Regulation The change in output voltage for a change in input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly affected. Load Regulation The change in output voltage for a change in load
Ver: 1.0 Jan 08, 2007
current at constant chip temperature. The measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly affected. Maximum Power Dissipation The maximum total device dissipation for which the regulator will operate within specifications. Quiescent Bias Current Current which is used to operate the regulator chip and is not delivered to the load. Output Capacitor for Stable Condition The G962 can be stable for X5R MLCC capacitor larger than 10F or POSCAP capacitor larger than 47F.
TEL: 886-3-5788833 http://www.gmt.com.tw
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Global Mixed-mode Technology Inc.
Typical Characteristics
VEN=VIN, =5V, IO = 0.5A, CIN = 4.7F, COUT =10F, TA = TJ = 25C
G962-18 Line Transient Response
G962
G962-25 Line Transient Response
G962-33 Line Transient Response
G962-50 Line Transient Response
G962-18 Load Transient Response
G962-25 Load Transient Response
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
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Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G962-33 Load Transient Response
G962
G962-50 Load Transient Response
G962-18 Short Circuit Current
G962-25 Short Circuit Current
G962-33 Short Circuit Current
G962-50 Short Circuit Current
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
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Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G962-18 Overcurrent Protection Characteristics
G962
G962-25 Overcurrent Protection Characteristics
G962-50 Overcurrent Protection Characteristics
G962-18 Start-UP
G962-25 Start-UP
G962-50 Start-UP
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
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Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G962-18 Ripple Rejection
70 60
Ripple Rejection (dB)
G962
G962-25 Ripple Rejection
IL=1A
70 IL=1A
Ripple Rejection (dB)
60 50 40 30 20 10 0 VIN=5V COUT=10F Vripple=224mV
50 40 30 20 10 0
10 100 1000 10000 100000 1000000
IL=2A
IL=2A
VIN=5V COUT=10F Vripple=224mV
10
100
1000
10000
100000
1000000
Frequency (Hz)
Frequency (Hz)
G962-33 Ripple Rejection
60 50
Ripple Rejection (dB)
G962-50 Ripple Rejection
60 50
Ripple Rejection (dB)
IL=100mA
IL=2A
40 30 20 10 0 -10 -20
(VIN-VOUT)>VDROPOUT VRIPPLE<0.5VP-P COUT=47F
10 100 1000 10000 100000
40 30 20
IL=2A IL=1A
IL=10mA
IL=1A
COUT=47F 10 0
10 100 1000 10000 100000 1000000
Frequency (Hz)
Frequency (Hz)
G962-18 Quiescent Current vs. Temperature
2.00 1.95 1.90
Quiescent Current (mA)
G962-25 Quiescent Current vs. Temperature
4.00 3.75
1.85 1.80 1.75 1.70 1.65 1.60 1.55 1.50 -25 -15 -5
VIN=5V
Quiescent Current (mA)
3.50 VIN=5V 3.25 3.00 VIN=4V 2.75 2.50
VIN=3V
5
15 25 35 45 55 65 75 85 Temperature (C)
-25 -15 -5
5
15 25 35 45 55 65 75 85 Temperature (C)
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
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Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G962-33 Quiescent Current vs. Temperature
5 4.5 4
Quiescent current (mA)
G962
G962-50 Quiescent Current vs. Temperature
8 7 VIN=6V
Quiescent Current (mA)
3.5 3 2.5 2 1.5 1 0.5 0 -40
6 VIN=7V 5 4 3 2
VIN=4V
VIN=5V
VIN=6V
-20
0
20
40
60
80
100
-40
-20
0
Temperature (C)
20 40 60 Temperature (C )
80
G962-18 Dropout Voltage vs. Temperature
900 800 Dropout Voltage (mV) Dropout Voltage (mV) 700 600 500 400 300 200 100 0 0 0.5 1 IL (A) 1.5 2 700 600 500 400 300 200 100 0 0
G962-25 Dropout Voltage vs. Temperature
T=85C
T=85C
T=25C T=-25C
T=25C
T=-25C
0.5
1 IL (mA)
1.5
2
G962-33 Dropout Voltage vs. Temperature
0.5 0.4
Dropout Voltage (V)
G962-50 Dropout Voltage vs. Temperature
800 700 Dropout Voutput (mV) 600 500 400 300 200 100 IL=2A
IL=2A
0.3 0.2 0.1 0 -40 -20 0 20 40 60 80 100 Temperature (C)
0 -40 -15 10 35 60 85 Temperature (C )
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
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Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G962-18 Output Voltage vs. Temperature
1.864 IL=10mA Output Voltage (V) 1.844 Output Voltage (V) 1.824 1.804 VIN=3V 1.784 1.764 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (C) 2.545 2.535 2.525 2.515 2.505 2.495 2.485 2.475 VIN=4V IL=10mA
G962
G962-25 Output Voltage vs. Temperature
VIN=5V
VIN=5V
-25 -15 -5
5
15 25 35 45 55 65 75 85 Temperature (C)
G962-33 Output Voltage vs. Temperature
3.5 3.45 IL=1A Output Voltage (V) 5.2
G962-50 Output Voltage vs. Temperature
IL=1A 5.15 VIN=7V 5.1 5.05 5 4.95 4.9 VIN=6V
Output Voltage (V)
3.4 3.35 3.3 3.25 3.2 3.15 3.1 -40 -20 0 20 40 60 80 100 VIN=5V VIN=7V
-40
-20
0
20
40
60
80
100
Temperature (C)
Temperature (C )
Max. Power Dissipation vs. PCB Top Copper Area
4.0
Max. Dissipation Power (W)
Max. Power Dissipation vs. TAMB (still air) ( Different PCB Top Copper Area )
4
Unit: in2
A=0.5 A=1.0 A=1.5 A=2.0 A=2.5 A=3.0
3.5
Max. Dissipation Power (W)
TAMB = 25C ; Still Air
3.5 3 2.5 2 1.5 1 0.5 0 25 35 45 55 65 TAMB (C) 75 85
3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 PCB Top Copper Area (in2)
A=3.5 A=4.0 A=4.5 A=5.0
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
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Global Mixed-mode Technology Inc.
Recommend Minimum Footprint
G962
TO-252
TO-252-5
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
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Global Mixed-mode Technology Inc.
Package Information
D D1 C1 B
G962
A
V L b1 L3 L2 e e1 b C L1 A1 E
TO-252 (T4) Package MILLIMETERS MIN.
2.190 0.000 0.880 0.500 0.700 0.430 0.430 6.350 5.200 5.400 2.300 TYP 4.500 9.400 2.550 1.400 0.350 4.320 REF 4.700 10.42 2.900 1.780 1.020 0.177 0.370 0.100 0.055 0.014 0.170 REF
SYMBOL
A A1 B b b1 C C1 D D1 E e e1 L L1 L2 L3 V
INCHES MAX.
2.400 0.127 1.650 0.880 0.900 0.580 0.580 6.730 5.460 6.220
MIN.
0.086 0.000 0.035 0.020 0.028 0.017 0.017 0.250 0.205 0.213 0.091 TYP
MAX.
0.094 0.005 0.065 0.035 0.035 0.023 0.023 0.265 0.215 0.245 0.185 0.410 0.114 0.070 0.040
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
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Global Mixed-mode Technology Inc.
G962
D D1 c1
A
V L1 E A1
L3 L2 e c e1 b
TO-252-5 (TJ) Package
SYMBOL
A A1 b c c1 D D1 E e e1 L1 L2 L3 V
MILLIMETERS MIN.
2.190 0.000 0.400 0.430 0.430 6.350 5.200 5.400 1.270 TYP 2.540 TYP 9.400 1.400 2.550 3.800 REF 9.900 1.780 2.900 0.370 0.055 0.100
INCHES MAX.
2.400 0.127 0.880 0.580 0.580 6.730 5.460 6.220
MIN.
0.086 0.000 0.016 0.017 0.017 0.250 0.205 0.213 0.050 TYP 1.000 TYP
MAX.
0.094 0.005 0.035 0.023 0.023 0.265 0.215 0.245
0.410 0.070 0.114 0.150 REF
Taping Specification
PACKAGE
TO-252 TO-252-5
Feed Direction TO-252 Package Orientation Feed Direction TO-252-5 Package Orientation
Q'TY/REEL
2,500 ea 2,500 ea
GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications.
Ver: 1.0 Jan 08, 2007
TEL: 886-3-5788833 http://www.gmt.com.tw
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