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| www..com ISSUED DATE :2006/06/06 REVISED DATE : G 111 7 A 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator The G1117A is a low dropout at positive adjustable or fixed-mode regulator with minimum of 1A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply. G1117A is also well suited for other applications such as VGA cards. G1117A is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25 to 5.0 with 6.4V to 12V input supply. Description Features & 1.4Vmaximum dropout full load current &Fast transient response &Output current limiting &Built-in thermal shutdown &Good noise rejection &3-Terminal Adjustable or Fixed 1.5V,1.8V,2.5V,3.3V,5.0V Package Dimensions D TO-92 E S1 A SEATING PLANE b1 REF. A S1 b b1 C e1 e b C Millimeter Min. Max. 4.45 4.7 1.02 0.36 0.51 0.36 0.76 0.36 0.51 REF. D E L e1 e Millimeter Min. Max. 4.44 4.7 3.30 3.81 12.70 1.150 1.390 2.42 2.66 Typical Circuit G1117A L Page: 1/4 ISSUED DATE :2006/06/06 REVISED DATE : Block Diagram Pin Descriptions Name Adj (GND) Vout Vin O I I/O Pin# 1 2 3 Function A resistor divider from this pin to the Vout pin and ground sets the output voltage (Ground only for fixed mode) The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be 1.3V higher than Vout in order for the device to regulate properly. Absolute Maximum Ratings Symbol Vin PD TST TOP DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range Parameter Ratings -0.3 to 12 Internally Limited -65 ~ + 150 0 ~ + 150 : : Unit V G1117A Page: 2/4 ISSUED DATE :2006/06/06 REVISED DATE : Electrical Characteristics Parameter Reference Voltage G1117AADJ G1117A-1.5 G1117A-1.8 Output Voltage G1117A-2.5 G1117A-3.3 G1117A-5.0 Line Regulation G1117A-XXX G1117AADJ G1117A-1.5 Load Regulation G1117A-1.8 G1117A-2.5 G1117A-3.3 G1117A-5.0 Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current Adjust Pin Current Quiescent Current Thermal Regulation Ripple Rejection G1117A-XXX G1117A-XXX Adjustable model Adjustable model Conditions Io=10mA, Tj=25 : , (Vin-Vout )=1.5V Io=10mA, Tj=25 : , 3.0V Vin 12V Io=10mA, Tj=25 : , 3.3V Vin 12V Io=10mA, Tj=25 : , 4.0V Vin 12V Io=10mA, Tj=25 : , 4.8V Vin 12V Io=10mA, Tj=25 : , 6.5V Vin 12V Io=10mA, Vout+1.5V TYP 1.250 1.500 1.800 2.500 3.300 5.000 12 15 20 26 40 1.3 5 50 0.008 60 MAX 1.275 1.530 1.836 2.550 3.365 5.100 0.2 1 15 18 25 33 50 1.4 10 100 12 0.04 70 UNIT V V V V V V % % mV mV mV mV mV V A mA uA mA %/W dB fixed model TA=25 : ,30ms pulse F=120Hz, COUT=25uF Tantalum, IOUT=1A G1117A-XXX VIN=VOUT+3V Temperature Stability IO=10mA 0.5 % JA Thermal Resistance Junction-to-Ambient(No 160 : /W heat sink ;No air flow) Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction Temperature by low duty cycle pulse testing. Load regulation is measured at the output lead =1/18" from the package. Note 2: Line and load regulation are guaranteed up to the maximum power dissipation of 3W. Power dissipation is determined by the difference in input and output and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range. G1117A Page: 3/4 ISSUED DATE :2006/06/06 REVISED DATE : Characteristics Curve Important Notice: All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of GTM. GTM reserves the right to make changes to its products without notice. GTM semiconductor products are not warranted to be suitable for use in life-support Applications, or systems. GTM assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. Head Office And Factory: Taiwan: No. 17-1 Tatung Rd. Fu Kou Hsin-Chu Industrial Park, Hsin-Chu, Taiwan, R. O. C. TEL : 886-3-597-7061 FAX : 886-3-597-9220, 597-0785 China: (201203) No.255, Jang-Jiang Tsai-Lueng RD. , Pu-Dung-Hsin District, Shang-Hai City, China TEL : 86-21-5895-7671 ~ 4 FAX : 86-21-38950165 G1117A Page: 4/4 |
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