MCP1755S中文资料16V, 300 mA low quiescent current LDO with Shutdown数据手册Microchip规格书

描述 Description

The MCP1755/MCP1755S is a 16 volt, high PSRR voltage regulator with short circuit current foldback. The MCP1755/MCP1755S regulator provides up to 300 mA of current. The input operating voltage range is specified from 3.6V to 16V continuous, 18V absolute maximum, making it ideal for automotive and commercial 12 VDC systems. The MCP1755/ MCP1755S typically delivers 70 dB of ripple rejection at 1 kHz, making the device ideal for AC sensitive applications like GFCI and AFCI circuit breaker designs. The Current Foldback feature is a true short circuit current foldback. The device current will fall back towards 10 mA under short circuit conditions. When the short is removed, the device will recover and continue operating.

特性 Features

High PSRR: >70 dB @ 1 kHz typical
68.0 µA Typical Quiescent Current
Input Operating Voltage Range: 3.6V to16.0V
300 mA Output Current for all output voltages
Low Dropout Voltage, 300 mV typical @ 300 mA
0.85% Typical Output Voltage Tolerance
Standard Output Voltage Options (1.8V, 2.5V, 3.0V, 3.3V, 5.0V)
Output voltage range 1.8V to 5.5V in 0.1Vincrements
Output Voltage Tolerances of ±2.0% over entiretemperature range
Stable with minimum 1.0 µF output capacitance
Power Good Output
Shutdown Input
True Current Foldback Protection
Short-Circuit Protection
Overtemperature Protection

简介

MCP1755S属于集成电路（IC）的线性+开关稳压器。由制造生产的MCP1755S稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。