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G5796 Dataheets PDF



Part Number G5796
Manufacturers Global Mixed-mode Technology
Logo Global Mixed-mode Technology
Description 500kHz 2A/3A Synchronous Step-down DC/DC
Datasheet G5796 DatasheetG5796 Datasheet (PDF)

Global Mixed-mode Technology G5796/G5796A G5797/G5797A 500kHz 2A/3A Synchronous Step-down DC/DC Features „ 2A/3A Output Current „ 0.1Ω Internal Power MOSFET Switch „ Stable with Low ESR Output Ceramic Capaci- tors „ Up to 95% Efficiency „ 32µA Shutdown Mode „ Fixed 500kHz Frequency „ Thermal Shutdown „ Cycle-by-Cycle Over Current Protection „ Wide 4.5V to 24V Operating Input Range „ Output Adjustable from 0.92V to 21.6V „ Available in SOP-8/SOP-8 (FD) Package „ Build in skip mode at light loa.

  G5796   G5796



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Global Mixed-mode Technology G5796/G5796A G5797/G5797A 500kHz 2A/3A Synchronous Step-down DC/DC Features „ 2A/3A Output Current „ 0.1Ω Internal Power MOSFET Switch „ Stable with Low ESR Output Ceramic Capaci- tors „ Up to 95% Efficiency „ 32µA Shutdown Mode „ Fixed 500kHz Frequency „ Thermal Shutdown „ Cycle-by-Cycle Over Current Protection „ Wide 4.5V to 24V Operating Input Range „ Output Adjustable from 0.92V to 21.6V „ Available in SOP-8/SOP-8 (FD) Package „ Build in skip mode at light loading in G5796A/G5797A Applications „ DSL Modems „ Distributed Power Systems „ Pre-Regulator for Linear Regulators General Description The G5796/G5797 is a monolithic step-down switch mode regulator with a built in internal power MOSFET. It achieves 2A/3A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Provide skip mode in G5796A/G5797A. When loading too light clock skip several cycle proportional to load. Fault condition protection includes cycle-by-cycle current limiting, output short circuit protection and thermal shutdown. In shutdown mode the regulator draws 32µA of supply current. Programmable soft-start overwrites the internal soft-start for various requirement of output power up ramp and minimizes the inrush supply current at initial startup. The G5796/G5797 requires a minimum number of readily available standard external components. It is available in a SOP-8/SOP-8 (FD) package. Ordering Information ORDER NUMBER G5796P11U MARKING G5796 G5796AP11U G5797F11U G5797AF11U G5796A G5797 G5797A Note: P1: SOP-8 F1: SOP-8 (FD) 1: Bonding Code U : Tape & Reel Pin Configuration G5796/G5796A BS 1 8 SS IN 2 7 EN LX 3 6 COMP GND 4 SOP-8 5 FB G5797/G5797A BS 1 8 SS IN 2 LX 3 Thermal Pad 7 EN 6 COMP GND 4 5 FB SOP-8 (FD) Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. Ver: 0.6 Aug 05, 2013 LIGHT LOAD PWM MODE SKIP MODE PWM MODE SKIP MODE TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PACKAGE (Green) SOP-8 SOP-8 SOP-8 (FD) SOP-8 (FD) Typical Application Circuit INPUT 4.5V to 24V C1 10µF/35V CERAMIC x2 C4 0.1µF C5 0.1µF R4 100kΩ 2 7 IN EN 1 BS LX 3 G5796/G5796A 8 SS FB 5 GND COMP 46 C6 OPEN C3 3.9nF R3 6.8kΩ L1 4.7µH R1 26.1kΩ 1% R2 10kΩ 1% OUTPUT 3.3V/2A C2 22µF/35V CERAMIC INPUT 4.5V to 24V C1 10µF/35V CERAMIC x2 C4 0.1µF C5 0.1µF R4 100kΩ 2 7 IN EN 1 BS LX 3 G5797/G5797A 8 SS FB 5 GND COMP 46 C6 OPEN C3 3.9nF R3 6.8kΩ L1 4.7µH R1 26.1kΩ 1% R2 10kΩ 1% OUTPUT 3.3V/3A C2 22µF/35V CERAMIC TEL: 886-3-5788833 http://www.gmt.com.tw 1 .


G5754 G5796 G5796A


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