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| Global Mixed-mode Technology Inc. G9218 1.8V 2A Low Dropout Regulator with Enable Features Dropout voltage 0.7V @ IO = 2A Output current in excess of 2A Output voltage accuracy 2.5% Quiescent current, typically 1.8mA Internal short circuit current limit Internal over temperature protection TO220 4pin Full-Mold package ON/OFF control General Description The G9218 positive 1.8V voltage regulator features the ability to source 2A of output current. The dropout voltage is 0.7V at 2A output current. The typical quiescent current is 1.8mA. 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 ORDER NUMBER MARKING G9218TF1T G9218TH1T G9218 G9218 TEMP. RANGE -40C to +85C -40C to +85C PIN PACKAGE TO220F-4L TO220F-4L 1 VIN VIN PIN OPTION 2 3 VO VO GND GND 4 VEN VEN Order Number Identification GXXXX XX X X Packing Type Pin Option Package Type Part Number PACKAGE TYPE TF: TO220F-4L (short lead) TH: TO220F-4L (long lead) 1 1.: VIN PIN OPTION 2 VO 3 GND 4 VEN PACKING T: Tube Typical Application R=5k VEN IO VIN C1 4.7F IENH Package Type TO220F-4L VOUT COUT 47F G9218 IQ Top View R=5k is recommended R must be connected for current IENH restriction as VEN > VIN+0.3V VIN VO GND VEN 12 3 4 Ver: 0.1 Preliminary Apr 20, 2004 TEL: 886-3-5788833 http://www.gmt.com.tw 1 Global Mixed-mode Technology Inc. (Note 1) Absolute Maximum Ratings Input Voltage......................................................7V VEN Voltage...............................................VIN+0.3V Power Dissipation Internally Limited (Note 2) Maximum Junction Temperature...........................150C Storage Temperature Range..........-65C TJ +150C Lead Temperature, Time for Wave Soldering TO220 Package......................................260C, 10s Continuous Power Dissipation (TA = +25C) TO220 No heatsink..........................................1.5W TO220 with infinite heatsink...............................15W G9218 (Note 1) Operating Conditions Input Voltage............................................2.2V~7V Temperature Range........................-40C TA 85C Electrical Characteristics VIN =5V, IO = 0.5A, CIN = 4.7F, COUT =47F, TA = TJ = 25C unless otherwise specified [Note 3] PARAMETER Output Voltage Line Regulation Load Regulation Quiescent Current Ripple Rejection Dropout Voltage Short Circuit Current Over Temperature Enable Voltage High Enable Voltage Low Enable Bias Current Low SYMBOL CONDITION IO =0.5A 2.2V < VIN < 7V, IO = 10mA 50mA < IO < 2A VIN = 3.3V fi = 120Hz, 1VP-P, IO = 100mA IO = 2A MIN 1.755 --------------2 ----- TYP 1.8 0.5 0.5 1.8 45 0.7 1 150 ------- MAX 1.845 2 2 2.5 --0.9 ------0.8 20 UNIT V % % mA dB V A C V V A VENH VENL IENL Output Active Output Disabled VEN = 0.4V 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. For the TO220F package, JA is 60C/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. 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 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: 0.1 Preliminary Apr 20, 2004 TEL: 886-3-5788833 http://www.gmt.com.tw 2 Global Mixed-mode Technology Inc. Block Diagram G9218 VIN 1 THERMAL SHUTDOWN 1.25V SHORT-CIRCUIT PROTECTION 2 VO BANDGAP REFERENCE _ + R1 HIGH / LOW VEN 4 OUTPUT ON/OFF R2 TTL COMPATIBLE BUFFER 3 GND Ver: 0.1 Preliminary Apr 20, 2004 TEL: 886-3-5788833 http://www.gmt.com.tw 3 Global Mixed-mode Technology Inc. Typical Performance Characteristics (VIN=5V, CIN=10F, COUT =47F, TA=25C, unless otherwise noted.) G9218 Load Transient Line Transient Short Circuit Current Start-UP Overcurrent Protection Characteristics 60 50 Ripple Rejection (dB) 40 30 20 10 0 10 100 Ripple Rejection IL=10mA IL=500mA IL=1.0A 1000 10000 100000 1000000 Frequency (Hz) Ver: 0.1 Preliminary Apr 20, 2004 TEL: 886-3-5788833 http://www.gmt.com.tw 4 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) G9218 VDROP vs. IL Output Voltage vs. Temperature 1.864 IL=10mA Dropout Voltage (mV) 1.844 Output Voltage (V) 1.824 VIN=5.0V 1.804 1.784 1.764 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (C) VIN=3.0V 900 800 700 600 500 400 300 200 100 0 0 0.5 TA=85 C TA=25 C TA=-25 C 1 IL (A) 1.5 2 Quiescent Current vs. Temperature 2.00 1.95 Output Voltage vs. VIN 1.864 IL=10mA 1.844 Output Voltage (V) Quiescent Current (mA) 1.90 1.85 1.80 1.75 1.70 1.65 1.60 1.55 1.50 VIN=5.0V TA=85 C 1.824 1.804 TA=25 C 1.784 1.764 TA=-25 C VIN=3.0V -25 -15 -5 5 15 25 35 45 55 65 75 85 2.5 3 3.5 4 Temperature (C) 4.5 5 VIN (V) 5.5 6 6.5 7 Max. Power Dissipation vs. PCB Top Copper Area 3 Max. Dissipation Power (W) Max. Dissipation Power (W) 2.5 2 1.5 1 0.5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 PCB Top Copper Area (in2) 4.5 5 TAMB = 25C ; Still Air 3 2.5 2 1.5 1 0.5 0 25 Max. Power Dissipation vs. TAMB Unit : in2 still air ; Different PCB Top Copper Area A=0.1 A=0.2 A=0.3 A=0.4 A=0.5 A=1.0 A=1.5 A=2.0 A=2.5 A=3.0 A=3.5 A=4.0 A=4.5 A=5.0 35 45 55 65 TAMB (C) 75 85 Ver: 0.1 Preliminary Apr 20, 2004 TEL: 886-3-5788833 http://www.gmt.com.tw 5 Global Mixed-mode Technology Inc. Package Information E1 L b D e L2 G9218 L1 E A A1 He TO220F-4L Package (short lead) DIMENSION IN MM NOM. 4.57 2.79 1.78 10.10 6.95 8.64 8.52 16.66 3.70 24.22 0.48 2.54(TYP) 0.635(TYP) 7 SYMBOL A A1 A2 D E E1 L L1 L2 He C e b MIN. 4.42 2.69 1.68 10.00 6.85 8.54 8.32 16.56 3.60 23.72 ------------4 MAX. 4.72 2.89 1.88 10.20 7.05 8.74 8.72 16.76 3.80 24.72 ------------11 Ver: 0.1 Preliminary Apr 20, 2004 6 C A2 MIN. 0.174 0.106 0.066 0.394 0.269 0.336 0.328 0.652 0.142 0.934 ------------4 DIMENSION IN INCH NOM. 0.180 0.110 0.070 0.398 0.273 0.340 0.335 0.656 0.146 0.953 0.019 0.1(TYP) 0.025(TYP) 7 MAX. 0.186 0.114 0.074 0.402 0.278 0.344 0.343 0.660 0.150 0.93 ------------11 TEL: 886-3-5788833 http://www.gmt.com.tw Global Mixed-mode Technology Inc. G9218 L b E1 D e L2 L1 E A A1 He TO220F-4L Package (long lead) DIMENSION IN MM NOM. 4.57 2.79 1.78 10.10 6.95 8.64 13.35 16.66 3.70 28.94 0.48 2.54(TYP) 0.635(TYP) 7 SYMBOL A A1 A2 D E E1 L L1 L2 He C e b MIN. 4.42 2.69 1.68 10.00 6.85 8.54 13.15 16.56 3.60 28.44 ------------4 MAX. 4.72 2.89 1.88 10.20 7.05 8.74 13.55 16.76 3.80 29.44 ------------11 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: 0.1 Preliminary Apr 20, 2004 7 C A2 MIN. 0.174 0.106 0.066 0.394 0.269 0.336 0.518 0.652 0.142 1.119 ------------4 DIMENSION IN INCH NOM. 0.180 0.110 0.070 0.398 0.273 0.340 0.526 0.656 0.146 1.139 0.019 0.1(TYP) 0.025(TYP) 7 MAX. 0.186 0.114 0.074 0.402 0.278 0.344 0.533 0.660 0.150 1.159 ------------11 TEL: 886-3-5788833 http://www.gmt.com.tw |
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