G9225 Global Mixed-mode Technology Inc. 2.5V 2A Low Dropout Regulator with Disable Features General Description Dropout voltage 0.5V @ IO = 2A Output current in excess of 2A Output voltage accuracy ±2.5% Quiescent current, typically 2.5mA Internal short circuit current limit Internal over temperature protection TO220 4pin Full-Mold package ON/OFF control The G9225 positive 2.5V voltage regulator features the ability to source 2A of output current. The dropout voltage is 0.5V at 2A output current. The typical quiescent current is 2.5mA. Furthermore, the quiescent current is smaller when the regulator is in the dropout mode. Familiar regulator features such as over temperature and over current protection circuits are provided to prevent it from being damaged by abnormal operating conditions. A VEN pin is provided to disable the output when needed. Ordering Information MARKING ORDER NUMBER TEMP. RANGE PACKAGE 1 2 PIN OPTION 3 4 G9225TF1T G9225 -20°C to +85°C TO220F-4L VIN VO GND VEN G9225TH1T G9225 -20°C to +85°C TO220F-4L VIN VO GND VEN Order Number Identification GXXXX XX X X Packing Type Pin Option Package Type Part Number PACKAGE TYPE PIN OPTION TF: TO220F-4L (short lead) TH: TO220F-4L (long lead) 1 2 VO 1.: VIN Typical Application R=5kΩ PACKING 3 GND 4 VEN T : Tube Package Type IENH VEN TO220F-4L IO VIN G9225 C1 4.7µF IQ VOUT Top View COUT 47µF 1 2 3 4 VIN VO GND VEN R=5kΩ is recommended R must be connected for current IENH restriction as VEN > VIN+0.3V TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Preliminary Jun 28, 2004 1 G9225 Global Mixed-mode Technology Inc. Absolute Maximum Ratings Operating Conditions (Note 1) Input Voltage……………………….…….………..……..7V VEN Voltage…………………………….……….…VIN+0.3V Power Dissipation Internally Limited (Note 2) Maximum Junction Temperature.………….….……..150°C Storage Temperature Range……....-65°C ≤ TJ ≤+150°C Lead Temperature, Time for Wave Soldering TO220 Package……….…….….……….….….260°C, 10s Continuous Power Dissipation (TA = +25°C) TO220 No heatsink…….……….…………….…..…..1.5W TO220 with infinite heatsink…………………….….…15W (Note 1) Input Voltage…………………………….………..2.5V~7V Temperature Range………….….........-20°C ≤ TA ≤85°C Electrical Characteristics VIN =5V, IO = 0.5A, CIN = 4.7µF, COUT =47µF, TA = TJ = 25°C unless otherwise specified [Note 3] PARAMETER SYMBOL CONDITION MIN TYP MAX 2.44 2.5 2.56 V 3.3V < VIN < 7V, IO = 10mA 50mA < IO < 2A VIN = 5V ------- 0.5 0.5 2.5 2 2 5 % % mA Ripple Rejection fi = 120Hz, 1VP-P, IO = 100mA --- 45 --- dB Dropout Voltage IO = 2A --- 0.5 0.7 V ----- 1.2 150 ----- A °C Output Voltage IO =0.5A Line Regulation Load Regulation Quiescent Current Short Circuit Current Over Temperature UNIT Disable Voltage High Disable Voltage Low VENH VENL Output Active Output Disabled 2 --- ----- --0.8 V V Disable Bias Current High Disable Bias Current Low IENH IENL VEN = 2.7V VEN 0.4V ----- ----- 20 20 µA µA 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 TO220 package, θJA is 60°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 2% 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: 0.2 Preliminary Jun 28, 2004 2 G9225 Global Mixed-mode Technology Inc. Block Diagram VIN 1 2 VO THERMAL SHUTDOWN BANDGAP REFERENCE HIGH / LOW Ven 4 SHORT-CIRCUIT PROTECTION 1.25V _ + R1 OUTPUT ON/OFF R2 TTL COMPATIBLE BUFFER 3 GND TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Preliminary Jun 28, 2004 3 G9225 Global Mixed-mode Technology Inc. Typical Performance Characteristics (VIN=5V, CIN=10µF, COUT = 10µF, TA=25°C, unless otherwise noted.) Line Transient Response Load Transient Response Short Circuit Current Ripple Rejection 70 IL=1A Ripple Rejection (dB) 60 50 IL=2A 40 30 VIN=5V COUT=10µF Vripple=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: 0.2 Preliminary Jun 28, 2004 4 G9225 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) Dropout Voltage vs. IL 700 3.75 600 Dropout Voltage (mV) Quiescent Current (mA) Quiescent Current vs. Temperature 4.00 3.50 VIN=5V 3.25 3.00 VIN=4V 2.75 T=85°C 500 400 300 T=-25°C T=25°C 200 100 0 2.50 -25 -15 -5 5 0 15 25 35 45 55 65 75 85 Temperature (°C) Output Voltage vs. Temperature 0.5 1 IL (mA) 1.5 2 Output Voltage vs. IL 2.54 2.545 VIN=7.0V Output Voltage (V) Output Voltage (V) 2.525 VIN=5V 2.515 2.505 2.495 T=25 °C 2.53 2.535 VIN=4V 2.485 IL=10mA VIN=5.0V 2.51 2.5 2.49 2.48 2.475 -25 -15 -5 2.52 VIN=3.5V 2.47 5 15 25 35 45 55 65 75 85 Temperature (°C) 0 0.5 1 1.5 Output Cirrent (A) 2 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Preliminary Jun 28, 2004 5 G9225 Global Mixed-mode Technology Inc. Package Information E1 L b D e L2 L1 E θ A C A1 A2 He TO220F-4L Package (short lead) MIN. DIMENSION IN MM NOM. MAX. MIN. DIMENSION IN INCH NOM. A 4.42 4.57 4.72 0.174 0.180 0.186 A1 2.69 2.79 2.89 0.106 0.110 0.114 A2 D 1.68 10.00 1.78 10.10 1.88 10.20 0.066 0.394 0.070 0.398 0.074 0.402 E E1 L 6.85 8.54 8.32 6.95 8.64 8.52 7.05 8.74 8.72 0.269 0.336 0.328 0.273 0.340 0.335 0.278 0.344 0.343 L1 L2 16.56 3.60 16.66 3.70 16.76 3.80 0.652 0.142 0.656 0.146 0.660 0.150 He C 23.72 ----- 24.22 0.48 24.72 ----- 0.934 ----- 0.953 0.019 0.93 ----- e b θ --------4° 2.54(TYP) 0.635(TYP) 7° --------11° --------4° 0.1(TYP) 0.025(TYP) 7° --------11° SYMBOL MAX. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Preliminary Jun 28, 2004 6 G9225 Global Mixed-mode Technology Inc. E1 L b D e L2 L1 E θ A C A2 A1 He TO 220F-4L Package (long lead) MIN. DIMENSION IN MM NOM. MAX. MIN. DIMENSION IN INCH NOM. A A1 4.42 2.69 4.57 2.79 4.72 2.89 0.174 0.106 0.180 0.110 0.186 0.114 A2 D E E1 L 1.68 10.00 6.85 8.54 13.15 1.78 10.10 6.95 8.64 13.35 1.88 10.20 7.05 8.74 13.55 0.066 0.394 0.269 0.336 0.518 0.070 0.398 0.273 0.340 0.526 0.074 0.402 0.278 0.344 0.533 L1 L2 16.56 3.60 16.66 3.70 16.76 3.80 0.652 0.142 0.656 0.146 0.660 0.150 He C e b θ 28.44 ------------4° 28.94 0.48 2.54(TYP) 0.635(TYP) 7° 29.44 ------------11° 1.119 ------------4° 1.139 0.019 0.1(TYP) 0.025(TYP) 7° 1.159 ------------11° SYMBOL MAX. 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: 0.2 Preliminary Jun 28, 2004 7