降压型控制器，具有同步整流的CPU电源 Step-Down Controllers with Synchronous Rectifier for CPU Power
General Description
The MAX796/MAX797/MAX799 high-performance, step down DC-DC converters with single or dual outputs
provide main CPU power in battery-powered systems. These buck controllers achieve 96% efficiency by using
synchronous rectification and Maxim’s proprietary Idle Mode™ control scheme to extend battery life at full-load
up to 10A and no-load outputs.
Features
♦96% Efficiency
♦4.5V to 30V Input Range
♦2.5V to 6V Adjustable Output
♦Preset 3.3V and 5V Outputs at up to 10A
♦Multiple Regulated Outputs
♦+5V Linear-Regulator Output
♦Precision 2.505V Reference Output
♦Automatic Bootstrap Circuit
♦150kHz/300kHz Fixed-Frequency PWM Operation
♦Programmable Soft-Start
♦375μA Typ Quiescent Current VIN = 12V, VOUT= 5V
♦1μA Typ Shutdown Current
Applications
Notebook and Subnotebook Computers
PDAs and Mobile Communicators
Cellular Phones
