Global Mixed-mode Technology
G5796/G5796A G5797/G5797A
500kHz 2A/3A Synchronous Step-down DC/DC
Features
2A/3A Outp...
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 avai...