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Global Mixed-mode Technology Inc.
G952
1.8V 1A Regulator
Features
Output current in excess of 1A Output voltage accuracy 2% Quiescent current, typically 480A Internal short circuit current limit Internal over temperature protection
General Description
The G952 positive 1.8V voltage regulator features the ability to source 1A of output current. The typical quiescent current is 0.48mA.
Applications
PC motherboard ADSL/Cable Modem Set-Top-Box LAN switch/Hub Broad band access
Familiar regulator features such as over temperature and over current protection circuits are provided to prevent it from being damaged by abnormal operating conditions.
Ordering Information
ORDER NUMBER
G952T63U
PACKAGE TYPE
SOT223
1
GND
PIN OPTION 2
VOUT
3
VIN
* For other package types and pin options, please contact us at sales @gmt.com.tw
Order Number Identification
GXXX XX X X Packing Type Pin Option Package Type Part Number PACKAGE TYPE
T3: TO 220 T4: TO 252 T5: TO 263 T6: SOT 223 1 1: VOUT 2: VOUT 3: GND 4: GND 5: VIN 6: VIN
PIN OPTION
2 GND VIN VOUT VIN GND VOUT 3 VIN GND VIN VOUT VOUT GND
PACKING
U & D: Tape & Reel Direction T: Tube
Typical Application
[Note 4] : Type of COUT
Package Type
IO VIN C1 1F
G952
IQ
VOUT COUT 10F
Top View
Top View
Top View
1
2
3
1
2
3
1
2
3
TO 220
TO252263
SOT 223
Ver: 0.1 Preliminary Oct 29, 2001
TEL: 886-3-5788833 http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
(Note 1) Input Voltage....................................................7V Power Dissipation Internally Limited .... (Note 2) Maximum Junction Temperature.................... .....150C Storage Temperature Range.........-65C TJ +150C Lead Temperature, Time for Wave Soldering SOT-223 Package....................................260C, 4s Continuous Power Dissipation (TA = +25C).........0.8W
G952
Absolute Maximum Ratings
(Note 1) Operating Conditions Input Voltage.........................................2.7V~6.5V Temperature Range........................0C TJ 125C
Electrical Characteristics
VIN =3.3V, IO = 1A, CIN = 1F, COUT =10F, All specifications apply for TA = TJ = 25C. [Note 3] PARAMETER CONDITIONS MIN TYP
Output Voltage Line Regulation Load Regulation Output Impedance Quiescent Current Ripple Rejection 10mA < IO < 1A 3V < VIN < 6.5V, IO = 10mA 10mA < IO < 1A 200mA DC and 100mA AC, fo = 120Hz VIN = 3.3V fi = 120Hz,Vripple =1VP-P, Io = 100mA IO = 0A IO = 100mA IO = 500mA IO = 1A Continuous Test, TA = 25C, TJ <150C, VOUT within 2% VIN = 3V VIN = 3.3V Minimum footprint (0.0625 square inch) Mounted on 0.53 square inch pcb area 1.764 1.800 3 30 80 480 53 880 895 950 1160 660 1 1.6 150
MAX
1.836 30 50
UNITS
V mV mV m A dB
Dropout Voltage
mV
mA A A C
Output Current
Short Circuit Current Over Temperature
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 allowable power dissipation is a function of the maximum junction temperature, TJ, the junction-to-ambient thermal resistance, RJA, and the ambient temperature, TA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Maximum power dissipation can be calculated based on the output current and the voltage drop across the pass. To determine the maximum power dissipation can use basic equation: PD(max) =TJ (max)-TA/ JA = IOUT (VIN-VOUT) = 800mW. The safe operation of SOT-223 package by G952, it can see "Typical Performance Characteristics". (Safe Operation Area) Note3: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. Note4: The type of output capacitor should be tantalum or aluminum.
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 100mV 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.
Ver: 0.1 Preliminary Oct 29, 2001
Load Regulation The change in output voltage for a change in load 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.
TEL: 886-3-5788833 http://www.gmt.com.tw
2
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(VIN= +3.3V, CIN=1F, COUT=10F, TA=25C, unless otherwise noted.) Output Voltage vs. Load Current
1.900 1.880 1600 1400
G952
Dropout Voltage vs. Load Current
Dropout Voltage (mV)
0 100 200 300 400 500 600 700 800 900 1000
1.860
Ootput Voltage (V)
1200 1000 800 600 400 200 0
0 100 200 300 400 500 600 700 800 900 1000
1.840 1.820 1.800 1.780 1.760 1.740 1.720 1.700
Load Current (mA)
Load Current (mA)
Ground Current vs. Load Current
2.00 1.80 1.60 1.00 1.20
Safe Operation Area of SOT-223
Mounted on 1 square inch pcb area
Ground Current (mA)
Load Current (A)
1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00
0 100 200 300 400 500 600 700 800 900 1000
Mounted on 0.53 square inch pcb 0.80 T A = 25C Still Air 0.60
0.40
0.20 Recommend minimum footprint (0.0625 square inch) 0.00
1.2 1.7 2.2 2.7 3.2 3.7 4.2 4.7
Load Current (mA)
Input-Output Voltage Differential (V)
Line Transient
Line Transient
Ver: 0.1 Preliminary Oct 29, 2001
TEL: 886-3-5788833 http://www.gmt.com.tw
3
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(VIN= +3.3V, CIN=1F, COUT=10F, TA=25C, unless otherwise noted.)
G952
Load Transient
Load Transient
Load Transient
Load Transient
R JA vs. Copper (1 ounce) Area for the SOT-223 Package
200
Thermal Resistance (R JA) C/W
Mounted on 1 oz Copper SOT-223
180 160 140 120 100 80 60 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
T A=25C Still Air
0.8
0.9
1.0
Copper Area (Square Inches)
Ver: 0.1 Preliminary Oct 29, 2001
TEL: 886-3-5788833 http://www.gmt.com.tw
4
Global Mixed-mode Technology Inc.
Package Information
G952
E A E1 E1 R F d D
D1
I
L
e b e1 b1
C A1
TO-220 (T3) Package SYMBOLS
A A1 b b1 C D D1 d E E1 e e1 F I L
MILLIMETERS MIN
4.318 2.46 0.69 1.143 0.304 3.429 8.53 2.62 9.906 2.84 2.29 4.83 1.143 3.454 13.589
INCHES MAX
4.826 2.72 0.94 1.397 0.460 3.683 9.04 2.87 10.40 5.13 2.79 5.33 1.397 3.962 14.351
MIN
0.170 0.097 0.027 0.045 0.012 0.135 0.336 0.103 0.390 0.112 0.090 0.190 0.045 0.136 0.535
MAX
0.190 0.107 0.037 0.055 0.018 0.145 0.356 0.113 0.410 0.202 0.110 0.210 0.055 0.156 0.565
Ver: 0.1 Preliminary Oct 29, 2001
TEL: 886-3-5788833 http://www.gmt.com.tw
5
Global Mixed-mode Technology Inc.
B R V 4 Z A 1 S K 2 3 C
G952
T SEATING PLANE E
U
F L D G 2 PL 0.13 (0.005) M T J H
TO-252 (T4) Package Notes: 1. Dimensioning and tolerancing per ansi y14.5m, 1982. 2. Controlling dimension: inch DIM
A B C D E F G H J K L R S U V Z
INCHES MIN
0.235 0.250 0.086 0.027 0.033 0.037 0.180BSC 0.034 0.018 0.102 0.090BSC 0.175 0.020 0.020 0.030 0.138 0.215 0.050 --0.050 --4.45 0.51 0.51 0.77 3.51 0.040 0.023 0.114 0.87 0.46 2.60
MILLIMETERS MAX
0.250 0.265 0.094 0.035 0.040 0.047
MIN
5.97 6.35 2.19 0.69 0.84 0.94 4.58BSC
MAX
6.35 6.73 2.38 0.88 1.01 1.19 1.01 0.58 2.89 2.29BSC 6.46 1.27 --1.27 ---
Ver: 0.1 Preliminary Oct 29, 2001
TEL: 886-3-5788833 http://www.gmt.com.tw
6
Global Mixed-mode Technology Inc.
A E A1 L3
G952
D
H C
L1
e L2 e1 b b1 A2
L
TO-263 (T5) Package SYMBOLS
A A1 A2 b b1 C D E e e1 H L L1 L2 L3
MILLIMETERS MIN
4.30 1.22 2.45 0.69 1.22 0.36 8.64 9.70 2.29 4.83 14.60 4.70 1.20 2.24 1.40MAX
INCHES MAX
4.70 1.32 2.69 0.94 1.40 0.56 9.652 10.54 2.79 5.33 15.78 5.84 1.778 2.84
MIN
0.169 0.048 0.104 0.027 0.048 0.014 0.340 0.382 0.090 0.190 0.575 0.185 0.047 0.088 0.055MAX
MAX
0.185 0.055 0.106 0.037 0.055 0.022 0.380 0.415 0.110 0.210 0.625 0.230 0.070 0.111
Ver: 0.1 Preliminary Oct 29, 2001
TEL: 886-3-5788833 http://www.gmt.com.tw
7
Global Mixed-mode Technology Inc.
A D B1 C
G952
13(4X)
H
E
L e e1 L2
13(4X)
A1 B
SOT-223 (T6) Package SYMBOLS
A A1 B B1 C D E e e1 H L L2 0
MILLIMETERS MIN
1.55 0.02 0.60 2.90 0.24 6.30 3.30 2.30 BSC 4.60 BSC 6.70 0.90 MIN 0.06 BSC 10 0 7.30 0.264
INCHES MAX
1.80 0.12 0.80 3.10 0.32 6.70 3.70
MIN
0.061 0.0008 0.024 0.114 0.009 0.248 0.130 0.090 BSC 0.181 BSC
MAX
0.071 0.0047 0.031 0.122 0.013 0.264 0.146
0.287 0.036 MIN 0.0024 BSC 10
Package Orientation
Feed Direction TO 220 Package Orientation
Feed Direction TO252263 Package Orientation
Feed Direction SOT 223 Package Orientation
Ver: 0.1 Preliminary Oct 29, 2001
TEL: 886-3-5788833 http://www.gmt.com.tw
8

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