G957 Global Mixed-mode Technology Inc. 1.5V 1A Regulator Features General Description The G957 positive 1.5V voltage regulator features the ability to source 1A of output current. The typical quiescent current is 0.54mA. Output current in excess of 1A Output voltage accuracy ±2.0% Quiescent current, typically 0.54mA Internal short circuit current limit Internal over temperature protection Familiar regulator features such as over temperature and over current protection circuits are provided to prevent it from being damaged by abnormal operating conditions. Applications PC motherboard ADSL/Cable Modem Set-Top-Box LAN switch/Hub Broad band access Ordering Information ORDER ORDER NUMBER MARKING NUMBER (Pb free) G957T35T G957T45U G957T65U G957T35Tf G957T45Uf G957T65Uf 957T35 957T45 957T65 TEMP. PACKAGE RANGE -40°C~85°C -40°C~85°C -40°C~85°C TO-220 TO-252 SOT-223 1 PIN OPTION 2 3 VIN VIN VIN GND GND GND VOUT VOUT VOUT * For other package types and pin options, please contact us at [email protected] Order Number Identification GXXX XX X X Packing Type Pin Option Package Type Part Number PACKAGE TYPE PIN OPTION 1 1: VOUT 2: VOUT 3: GND 4: GND 5: VIN 6: VIN T3: TO-220 T4: TO-252 T6: SOT-223 2 GND VIN VOUT VIN GND VOUT Package Type PACKING 3 VIN GND VIN VOUT VOUT GND U: Tape & Reel T: Tube Typical Application [Note 4]: Type of COUT IO Top View Top View G957 VIN C1 1µF 1 2 3 TO-220 1 2 TO-252 3 VOUT Top View 1 2 IQ COUT 10µF 3 SOT-223 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.2 Jan 02, 2006 1 G957 Global Mixed-mode Technology Inc. Absolute Maximum Ratings (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) SOT-223. . . . . . . . . . . . . . . . . . . . . . . . . . 148°C/W TO-220. . . . . . . . . . . . . . . . . . . . . . . . . . . . 76°C/W TO-252. . . . . . . . . . . . . . . . . . . . . . . . . . . 124°C/W Thermal Resistance Junction to Case, (θJC) SOT-223 . . . . . . . . . . . . . . . . . . . . . . . . . . 22°C/W TO-252 . . . . . . . . . . . . . . . . . . . . . . . . . . . 7°C/W Operating Conditions (Note 1) Input Voltage . . . . . . . . . . . . .. . . . . . . . . . . 2.7V~6.5V Temperature Range. . . . . . . . . . . . .-40°C ≤ TA ≤85°C Electrical Characteristics VIN =3.3V, IO = 1A, CIN = 1µF, COUT =10µF, All specifications apply for TA = TJ = 25°C. [Note 3] PARAMETER CONDITION MIN TYP MAX Output Voltage Line Regulation Load Regulation Output Impedance Quiescent Current Ripple Rejection Dropout Voltage Output Current 10mA < IO < 1A 3V < VIN < 6.5V, IO = 10mA 10mA < IO < 1A 200mA DC and 100mA AC, fo = 120Hz VIN = 3V fi = 120Hz,Vripple =1VP-P, Io = 100mA IO = 0A IO = 100mA IO = 500mA IO = 1A Minimum footprint VIN = 3V(SOT-223) Continuous Test, (0.0625 square inch) TA = 25°C, TJ 150°C, Mounted on 0.53 VOUT within ±2% VIN = 3.3V(SOT-223) square inch pcb area Short Circuit Current Over Temperature UNIT 1.47 ------------------- 1.5 6 19 80 0.54 54 1.13 1.14 1.21 1.32 1.53 30 50 --1 --------1.5 V mV mV mΩ mA dB 660 --- --- mA 1 --- --- A ----- 1.6 150 ----- A °C 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, 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. For the G957 in SOT-223 package, θJA is 148°C/W ; in the TO-252 package, θJA is 124°C/W; in the TO-220 package, θJA is 76°C/W (No heat sink). 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. 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. 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. 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 Ver: 1.2 Jan 02, 2006 2 G957 Global Mixed-mode Technology Inc. Typical Performance Characteristics (VIN= +3.3V, CIN=1µF, COUT=10µF, TA=25°C, unless otherwise noted.) Line Transient Response Load Transient Response Short Circuit Current Ripple Rejection 60 IL=10mA Ripple Rejection (dB) 50 IL=1A 40 IL=500mA 30 V IN=3.5V COUT =10µF V ripple=224mV 20 10 0 10 100 1000 10000 100000 1000000 Frequency (Hz) Overcurrent Protection Characteristics Start-up TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.2 Jan 02, 2006 3 G957 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) Quiescent Current vs. Temperature Dropout Voltage vs. IL 1.50 1.188 Dropout Voltage (V) Quiescent Current (mA) 1.25 1.00 V IN=6.0V 0.75 0.50 V IN=5.0V 1.157 TA =85°C TA=25°C 1.126 1.094 0.25 TA =-25°C 0.00 1.063 -25 -15 -5 5 15 25 35 45 55 65 75 85 0 0.25 0.5 Temperature (°C) 1 Output Voltage vs. VIN Output Voltage vs. Temperature 1.525 1.53 IL=10mA 1.515 1.510 IL=10mA 1.525 Output Voltage (V) 1.520 Output Voltage (V) 0.75 IL (A) V IN=5.0V 1.505 1.52 TA =85°C 1.515 1.51 TA =25°C 1.505 1.500 1.5 V IN=4.0V 1.495 TA =-25°C 1.495 -25 -10 5 20 35 50 65 80 3.5 4 4.5 5 5.5 6 6.5 Temperature( °C) V IN (V) SOT-223 Power Dissipation vs. PCB Top Copper Area TAMB = 25°C ; Still Air SOT-223 Max. Power Dissipation vs. TAMB (still air) ( Different PCB Top Copper Area ) 3 3 2.5 2.5 7 Unit : in2 Max. Dissipation Power (W) Max. Dissipation Power (W) A=0.5 2 1.5 1 0.5 0 A=1.0 A=1.5 2 A=2.0 A=2.5 1.5 A=3.0 1 A=3.5 A=4.0 0.5 A=4.5 A=5.0 0 0.5 1.5 2.5 3.5 25 4.5 45 65 85 TAMB (°C) PCB Top Copper Area (in2) TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.2 Jan 02, 2006 4 G957 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) TO-252 Power Dissipation vs. PCB Top Copper Area TAMB = 25°C ; Still Air TO-252 Max. Power Dissipation vs. TAMB (still air) ( Different PCB Top Copper Area ) 4 4 3.5 3.5 Unit:in2 Max. Dissipation Power (W) Max. Dissipation Power (W) A=0.5 3 2.5 2 1.5 1 A=1.0 3 A=1.5 2.5 A=2.0 A=2.5 2 A=3.0 1.5 A=3.5 1 A=4.0 0.5 0.5 0 0 A=4.5 A=5.0 0.5 1.5 2.5 3.5 PCB Top Copper Area (in2) 4.5 25 TO-220 Max. Power Dissipation vs. Temperature TAMB ( °C) 65 85 Heatsink Package Dimension 5 TO-220 4.5 Max. Power Dissipation (W) 45 4 Heatsink 3.5 3 2.5 2 1.5 1 Without Heatsink 0.5 0 -45 -15 15 45 75 Temparature ( °C) 105 Recommended Minimum Footprint SOT-223 TO-252 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.2 Jan 02, 2006 5 G957 Global Mixed-mode Technology Inc. Package Information E A E1 E1 DIA F d D D1 I L e C A1 b e1 b1 TO-220 (T3) Package SYMBOL MILLIMETER INCH MIN MAX MIN MAX A A1 b 4.318 2.46 0.69 4.826 2.72 0.94 0.170 0.097 0.027 0.190 0.107 0.037 b1 C D D1 d E 1.143 0.304 3.429 8.53 2.62 9.906 1.397 0.460 3.683 9.04 2.87 10.40 0.045 0.012 0.135 0.336 0.103 0.390 0.055 0.018 0.145 0.356 0.113 0.410 E1 4.953 5.22 0.195 0.206 DIA e 3.708 2.29 3.962 2.79 0.146 0.090 0.156 0.110 e1 F L I 4.83 1.143 13.589 3.56 5.33 1.397 14.351 4.06 0.190 0.045 0.535 0.140 0.210 0.055 0.565 0.16 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.2 Jan 02, 2006 6 G957 Global Mixed-mode Technology Inc. A E A1 c1 b2 L2 Seating Plane D H L1 L3 L c b1 b e e1 E1 BACK VIEW Z-Z TO-252 (T4) Package SYMBOL A A1 b b1 b2 c c1 D E E1 e e1 H L L1 L2 L3 MILLIMETERS INCHES MIN. MAX. MIN. MAX. 2.19 0.89 0.64 0.76 5.21 0.46 0.46 5.97 6.35 2.38 1.14 0.88 1.14 5.46 0.58 0.58 6.22 6.73 0.086 0.035 0.025 0.030 0.205 0.018 0.018 0.235 0.250 0.094 0.045 0.035 0.045 0.215 0.023 0.023 0.244 0.265 MIN 4.32 2.28 BSC 4.57 BSC 9.40 0.51 0.64 0.88 1.15 MIN 0.170 0.090 BSC 0.180 BSC 10.42 ----1.02 1.27 1.52 0.370 0.020 0.025 0.035 0.045 0.410 ----0.040 0.050 0.060 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.2 Jan 02, 2006 7 G957 Global Mixed-mode Technology Inc. A D α B1 C 13°(4X) H E L L2 e e1 13°(4X) A1 B SOT-223 (T6) Package SYMBOL MILLIMETER INCH MIN MAX MIN MAX A 1.55 1.80 0.061 0.071 A1 B B1 C 0.02 0.60 2.90 0.24 0.12 0.80 3.10 0.32 0.0008 0.024 0.114 0.009 0.0047 0.031 0.122 0.013 D E 6.30 3.30 6.70 3.70 0.248 0.130 0.264 0.146 e e1 H L L2 α 2.30 BSC 4.60 BSC 6.70 0.090 BSC 0.181 BSC 7.30 0.264 0.90 MIN 0.06 BSC 0° 0.287 0.036 MIN 0.0024 BSC 10° 0° 10° Taping Specification Feed Direction TO-252 Package Orientation PACKAGE Q’TY/REEL Q’TY/TUBE TO-220 ----- 50 ea TO-252 SOT-223 2,500 ea 2,500 ea ----- Feed Direction SOT-223 Package Orientation 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. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.2 Jan 02, 2006 8