摘要：本应用笔记介绍了外部功率MOSFET作为负载断开开关行为，并允许重物和低输入电压开关稳压器启动。负载断开电路提高一个单一的镍氢电池的输出为3.3V ，并提供600mA的输出电流。的MAX1703升压型DC -DC转换器的设计特色。 Maxim > App Notes > Battery Management Power-Supply Circuits Keywords: load disconnect, step-up regulator, boost converter, NniMH output, regulator feedback step-up DC-DC converter Jun 19, 2000 APPLICATION NOTE 657 Simple Circuit Disconnects Load Abstract: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. Placing a load-disconnect circuit on the output of a bootstrapped step-up regulator allows the regulator to start with load currents much higher than would otherwise be poss……