G954

Global Mixed-mode Technology Inc. G954 2A Low Dropout Regulator Features Fixed Output Voltage 1.2V, 1.5V, 1.8V and 2.5V Over Current and Over Temperature Protection Output Current 2A TO-263 & TO-263T Package General Description The G954 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 with regular LDOs, it can be used to supply 2.5V on motherboards or 1.5V, 1.8V on peripheral cards from the power supply thus allowing the elimination of costly heatsinks. The G954 provides excellent regulation over variations in line, load and temperature. It provides over current and over temperature protection functions. The G954 is available with 1.2V, 1.5V, 1.8V, 2.5V and adjustable outputs in TO-263 & TO-263T package. Applications Battery Powered Systems Motherboards Peripheral Cards Network Cards Set Top Boxes Notebook Computers ORDER NUMBER G954-12T55U G954-15T55U G954-18T55U G954-25T55U G954-12TU5U G954-15TU5U G954-18TU5U G954-25TU5U Note: T5: TO-263 5: Bonding Code U: Tape & Reel MARKING G954-12 G954-15 G954-18 G954-25 G954-12 G954-15 G954-18 G954-25 TU: TO-263T VOLTAGE 1.2V 1.5V 1.8V 2.5V 1.2V 1.5V 1.8V 2.5V TEMP. RANGE -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C -40°C ~ +85°C PACKAGE (Pb free) TO-263 TO-263 TO-263 TO-263 TO-263T TO-263T TO-263T TO-263T Pin Configuration Typical Application Circuit VIN VO Top View 1 2 3 220µF G954 G954 220µF VIN GND VO TO-263/TO-263T Ver: 0.9 Apr 24, 2007 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. . . . . . . . . . . . 150°C Storage Temperature Range. . . . -65°C ≤TJ ≤ +150°C Reflow Temperature (soldering, 10sec) . . . . . .260°C Thermal Resistance Junction to Ambient, (θJA) TO-263T(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . .80°C/W Thermal Resistance Junction to Case, (θJc) TO-263T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8°C/W ESD Rating (Human Body Model) . . . . . . . . . . . . 2kV Note (1): See Recommended Minimum Footprint G954 Absolute Maximum Ratings Operation Conditions (Note 1) Input Voltage . . . . . . . . . . . . . . . . . . . . . . . 2.2V ~5.5V Temperature Range . . . . . . . . . . . .-40°C ≤TA ≤ +85°C Electrical Characteristics VIN = 5V, IO = 0.5A, CIN = COUT = 220µF, TA = TJ = 25°C unless otherwise specified (Note 3) PARAMETER Supply Voltage Output Voltage Line Regulation SYMBOL VIN VO CONDITION VIN = VO +0.7V, IO = 10mA VO+0.7V < VIN < 5.5V, IO = 10mA G954-12 VIN = 2.5V, 10mA < IOUT < 2A G954-15 VIN = 2.5V, 10mA < IOUT < 2A G954-18 VIN = 3.8V, 10mA < IOUT < 2A G954-25 VIN = 5V, 10mA < IOUT < 2A VIN = 5V fi = 120Hz, 1VP-P, IO = 100mA G954-15 ΔVOUT = 2%, IOUT = 2A G954-18 ΔVOUT = 2%, IOUT = 2A G954-25 ΔVOUT = 2%, IOUT = 2A MIN 2.2 -2 --- TYP --VO 0.2 MAX 5.5 2 2 UNIT V % % Load Regulation --- 1 2 % Quiescent Current Ripple Rejection Dropout Voltage Short Circuit Current Over Temperature IQ VD --------------- 2.7 55 0.9 0.7 0.5 1 150 4.5 --1.1 0.9 0.7 ----- mA dB V A °C 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, θJA, and ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is (Tjmax-TA) / θJA. If this dissipation is exceeded, the die temperature will rise above 150°C 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. Ver: 0.9 Apr 24, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 2 Global Mixed-mode Technology Inc. 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. G954 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. Ver: 0.9 Apr 24, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 3 Global Mixed-mode Technology Inc. Typical Performance Characteristics ViN-VOUT =3V, CIN = 220µF, COUT =220µF, TA = 25°C, unless otherwise noted. G954 Short Circuit Current Line Transient Response Ripple Rejection 70 60 Ripple Rejection (dB) G954-18 Overcurrent Protection Characteristics 50 40 30 20 10 0 10 100 1000 10000 IL=1A IL=2A 100000 1000000 Frequency (Hz) G954-18-Start-up G954-18-Start-up Ver: 0.9 Apr 24, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 4 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) Max. Power Dissipation vs. PCB Top Copper Area 4.5 4 Max. Dissipation Power (W) Max. Dissipation Power (W) G954 Max. Power Dissipation vs. TAMB Unit : In2 A=0.5 A=1.0 A=1.5 4.5 4 3.5 3 3.5 3 2.5 2 1.5 1 0.5 0 0.5 1.5 2.5 3.5 4.5 PCB Top Copper Area (in2) A=2.0 2.5 2 1.5 1 0.5 0 25 35 45 55 65 TAMB (°C) 75 85 A=2.5 A=3.0 A=3.5 A=4.0 A=4.5 A=5.0 G954-18 Quiescent Current vs. Temperature 3.0 1.4 IL=10mA Quiescent Current (mA) G954-18 Dropout Voltage vs. IL 2.5 Dropout Voltage (V) 1.2 1.0 0.8 0.6 0.4 2.0 1.5 VIN=4V VIN=5V 0.2 0.0 TA=-25°C 1 1.2 1.4 TA=25°C TA=85°C 1.0 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (°C) 1.6 IL (A) 1.8 2 G954-18 Output Voltage vs. Temperature 1.825 IL=10mA Output Voltage (V) G954-18 Output Voltage vs. IL 1.824 1.814 1.804 1.794 1.784 1.774 1.764 VIN=4V VIN=5V 1.820 Output Voltage (V) 1.815 1.810 IL=4A 1.805 IL=5A TA=25°C 1.800 5 15 25 35 45 55 Temperature (°C) 65 75 85 0 0.5 1 1.5 2 IL (A) Ver: 0.9 Apr 24, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 5 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) G954-25 Quiescent Current vs. Temperature 3.50 1000 900 3.00 Quiescent Current (mA) Dropout Voltage (mV) G954 G954-25 Dropout Voltage vs. IL 800 700 600 500 400 300 200 100 TA=-25°C TA=85°C 2.50 2.00 VIN=5V 1.50 VIN=6V TA=25°C 1.00 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (°C) 0 1 1.2 1.4 IL (A) 1.6 1.8 2 G954-25 Output Voltage vs. Temperature 2.55 2.59 2.57 Output Voltage (V) G954-25 Output Voltage vs. IL 2.54 2.53 Output Voltage (V) TA=25°C 2.55 2.53 2.51 2.49 2.47 2.45 -25 -5 15 35 55 75 Temperature (°C) IL=10mA VIN=4V VIN=5V 2.52 2.51 2.5 2.49 2.48 2.47 2.46 2.45 0 0.5 1 IL (A) 1.5 2 VIN=4V VIN=5V Recommended Minimum Footprint TO-263 TO-263T Ver: 0.9 Apr 24, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 6 Global Mixed-mode Technology Inc. Package Information D c1 A G954 B V L3 E b1 L A1 L1 b L2 e e1 c TO-263 (T5) Package SYMBOL A A1 B b b1 c c1 D E e e1 L L1 L2 L3 V MILLIMETER MIN 4.470 0.000 1.170 0.710 1.170 0.310 1.170 10.010 8.500 2.540 TYP 4.980 15.050 5.080 2.340 1.300 5.600 REF 5.180 15.450 5.480 2.740 1.700 0.196 0.593 0.200 0.092 0.051 INCH MAX 4.670 0.150 1.370 0.910 1.370 0.530 1.370 10.310 8.900 MIN 0.176 0.000 0.046 0.028 0.046 0.012 0.046 0.394 0.335 0.100 TYP MAX 0.184 0.006 0.054 0.036 0.054 0.021 0.054 0.406 0.350 0.204 0.608 0.216 0.108 0.067 0.220 REF Ver: 0.9 Apr 24, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 7 Global Mixed-mode Technology Inc. D1 D1 B A c1 G954 E V L L1 L3 L2 b e e1 c TO-263T (TU) Package SYMBOL A B b c c1 D E e e1 L L1 L2 L3 V DIMENSIONS IN MILLIMETER MIN NOM 1.750 0.880 1.255 0.381 0.356 9.660 8.380 --------13.74 ----2.290 --------2.000 1.280 1.295 0.406 0.406 10.160 8.680 2.540 5.080 14.240 4.280 2.540 ----7.280 DIMENSIONS IN INCH MAX 2.250 1.680 1.335 0.431 0.456 10.660 8.980 --------14.740 ----2.790 1.778 ----- MIN 0.069 0.345 0.049 0.015 0.014 0.380 0.330 --------0.541 ----0.090 --------- NOM 0.079 0.050 0.051 0.016 0.016 0.400 0.342 0.100 0.200 0.561 0.169 0.100 ----0.287 MAX 0.089 0.066 0.053 0.017 0.018 0.420 0.354 --------0.580 ----0.110 0.070 ----- Taping Specification PACKAGE TO-263 TO-263T Feed Direction TO-263/TO-263T Package Orientation Q’TY/REEL 800 ea 1,500 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: 0.9 Apr 24, 2007 TEL: 886-3-5788833 http://www.gmt.com.tw 8