应用笔记 657

Simple Circuit Disconnects Load


摘要 : This application note shows how an external power MOSFET acts as a load-disconnect switch and allows a switching regulator to start up with heavy loads and low-input voltages. The load-disconnect circuit boosts a single NiMH cell output to 3.3V and delivers output currents to 600mA. The MAX1703 step-up DC-DC converter is featured in the design.