TC2185中文资料150mA CMOS LDO w/ Shutdown and Vref Bypass数据手册Microchip规格书

描述 Description

The TC2014, TC2015, and TC2185 are high accuracy (typically ±0.4%) CMOS upgrades for older (bipolar) low dropout regulators such as the LP2980. Total supply current is typically 55µA (20 to 60 times lower than in bipolar regulators). The devices’ key features include ultra low noise operation (plus bypass reference), very low dropout voltage - typically 45 mV (TC2014); 90 mV (TC2015); and 140 mV (TC2185) at full load - and fast response to step changes in load. Supply current is reduced to 0.5 µA (max) and VOUT falls to zero when the shutdown input is low. The devices also incorporate over-current protection. The TC2014, TC2015 and TC2185 are stable with an output capacitor of only 1µF and have a maximum output current of 50 mA, 100 mA, and 150 mA, respectively. For higher output versions, see the TC1107, TC1108 and TC1173 (IOUT = 300 mA) data sheets.

特性 Features

Extremely Low Supply Current (55 µA typical)
Very Low Dropout Voltage: (140 mV typical @ 150 mA)
High Output Voltage Accuracy (±0.4% typical)
Standard or Custom Output Voltages
Power-Saving Shutdown Mode
Reference Bypass Input for Ultra Low-Noise Operation
Fast Shutdown Response Time (60 µsec typical)
Over-Current Protection
Space-Saving 5-Pin SOT-23A Package
Pin Compatible Upgrades for Bipolar Regulators

简介

TC2185属于集成电路（IC）的线性+开关稳压器。由制造生产的TC2185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。