MAX8556参考设计电路|LDO稳压器应用电路

MAX8556低压差线性稳压器的输入电压可低至1.425V，能够连续输出4A电流而压差仅为100mV。此篇主要介绍了MAX8556特性、应用范围、参考设计电路以及电路分析，帮助大家缩短设计时间。

MAX8556特性：保证4A输出电流；内置软启动；短路电流折返式保护；热过载保护

MAX8556典型应用范围：自动测试设备(ATE)；网络；负载点电源；无线基站

MAX8556参考设计应用电路：

图1MAX8556内部结构图

TheMAX8556/MAX8557 low-dropout linear regulators operate from input voltages as low as 1.425V and are able to deliver up to 4A of continuous output current with a typical dropout voltage of only 100mV. The output voltage is adjustable from 0.5V to VIN - 0.2V.

图2MAX8556参考设计图

TheMAX8556/MAX8557 low-dropout linear regulators are capable of delivering up to 4A from low-input voltage supplies ranging from 1.425V to 3.6V with only 200mV of dropout (max). The pMOS output stage can be driven from input voltages down to 1.425V without sacrificing stability or transient performance.Supply current is not a significant function of load or input headroom because this regulator has a pMOS output device.