GM1117A ETC2 | Alldatasheet

Document overview

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Technical content

Features

&1.4Vmaximum dropout full load current &Fast transient response &Output current limiting &Built-in thermal shutdown &Good noise rejection

Applications

&PC peripheral &Communication Package Dimensions A 4.4 4.6 G 3.00 REF. B 4.05 4.25 H 1.50 REF. C 1.50 1.70 I 0.40 0.52 D 1.30 1.50 J 1.40 1.60 E 2.40 2.60 K 0.35 0.41 F 0.89 1.20 L 5° TYP. M 0.70 REF. Typical Circuit SOT-89

GM1117A Page: 2/4 ISSUED DATE :2003/08/02 REVISED DATE :2006/06/05C Block Diagram Pin Descriptions Name I/O Pin# Function Adj (GND) 1 A resistor divider from this pin to the Vout pin and ground sets the output voltage (Ground only for fixed mode) Vout O 2 The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. Vin I 3 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 Parameter Ratings Unit Vin DC Supply Voltage -0.3 to 12 V PD Power Dissipation Internally Limited TST Storage Temperature -65 ~ + 150 : TOP Operating Junction Temperature Range 0 ~ + 150 :

GM1117A Page: 3/4 ISSUED DATE :2003/08/02 REVISED DATE :2006/06/05C

Electrical Characteristics

Parameter Conditions MIN TYP MAX UNIT Reference Voltage GM1117AADJ Io=10mA, Tj=25 ,: (Vin-Vout )=1.5V 1.225 1.250 1.275 V Output Voltage Line Regulation GM1117A-XXX Io=10mA, Vout+1.5V<Vin<12V, Tj=25: - - 0.2 % GM1117AADJ Vin=3.3V, Vadj=0, 0mA<Io<1A, Tj=25:(Note 1,2) - - 1 % GM1117A-1.5 Vin=3.0V, 0mA<Io<1A, TJ=25 :(Note 1,2) - 12 15 mV GM1117A-1.8 Vin=3.3V, 0mA<Io<1A, TJ=25 :(Note 1,2) - 15 18 mV GM1117A-2.5 Vin=4.0V, 0mA<Io<1A, TJ=25 :(Note 1,2) - 20 25 mV GM1117A-3.3 Vin=5.0V, 0mA<Io<1A, TJ=25 :(Note 1,2) - 26 33 mV Load Regulation GM1117A-5.0 Vin=8.0V, 0mA<Io<1A, TJ=25 :(Note 1,2) - 40 50 mV Dropout Voltage (VIN-VOUT) GM1117A-XXX Io=1A, (Vout=0.1% Vout) - 1.3 1.4 V Current Limit GM1117A-XXX Vin-Vout=5V 1.1 - - A Minimum Load Current Adjustable model Vin=5V - 5 10 mA Adjust Pin Current Adjustable model Vin=12V, Io=10mA - 50 100 uA Quiescent Current fixed model Vin=12V, Io=0mA - - 12 mA Thermal Regulation TA=25 ,30ms pulse: - 0.008 0.04 %/W F=120HZ,COUT=25uF Tantalum, IOUT=1A Ripple Rejection GM1117A-XXX VIN=VOUT+3V - 60 70 dB Temperature Stability IO=10mA - 0.5 - % JA Thermal Resistance Junction-to-Ambient(No heat sink ;No air flow) - 300 - /:W JC Thermal Resistance Junction-to-Case Control Circuitry/Power Transistor - 100 - /:W 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.

GM1117A Page: 4/4 ISSUED DATE :2003/08/02 REVISED DATE :2006/06/05C 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: 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