MAX796CPE

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