TC1054中文资料50mA High Accuracy CMOS LDO w/ Shutdown and Error Output数据手册Microchip规格书

描述 Description

The TC1054, TC1055, and TC1186 are high accuracy (typically ±0.5%) CMOS upgrades for older (bipolar) low dropout regulators. Designed specifically for battery-operated systems, the devices’ CMOS construction eliminates wasted ground current, significantly extending battery life. Total supply current is typically 50µA at full load (20 to 60 times lower than in bipolar regulators). The devices’ key features include ultra low noise operation, very low dropout voltage — typically 85mV (TC1054); 180mV (TC1055); and 270mV (TC1186) at full load — and fast response to step changes in load. An error output (ERROR) is asserted when the devices are out-of-regulation (due to a low input voltage or excessive output current). ERROR can be used as a low battery warning or as a processor RESET signal (with the addition of an external RC network). Supply current is reduced to 0.5µA (max) and both VOUT and ERROR are disabled when the shut-down input is low. The devices incorporate both over-temperature and over-current protection. The TC1054, TC1055, and TC1186 are stable with an output capacitor of only 1µF and have a maximum output current of 50mA, 100mA, and 150mA, respectively. For higher output current regulators, please see the TC1173 (IOUT = 300mA) data sheet.

特性 Features

Low Ground Current for Longer Battery Life
Very Low Dropout Voltage
Minimum 50mA, 100mA, and 150mA Output Current (TC1054, TC1055, and TC1186, Respectively)
High Output Voltage Accuracy
Standard or Custom Output Voltages
Power-Saving Shutdown Mode
ERROR Output Can Be Used as a Low Battery Detector, or Processor Reset Generator
Over-Current and Over-Temperature Protection
Pin Compatible Upgrades for Bipolar Regulators

简介

TC1054属于集成电路（IC）的线性+开关稳压器。由制造生产的TC1054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。