TC1187中文资料150mA Adjustable CMOS LDO with Shutdown数据手册Microchip规格书

描述 Description

The TC1070, TC1071, and TC1187 are adjustable LDOs designed to supersede a variety of older (bipolar) voltage regulators. Total supply current is typically 50uA 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 (TC1070); 180mV (TC1071); and 270mV (TC1187) at full load, and fast response to step changes in load. Supply current is reduced to 0.5 µA (max) when the shutdown input is low. The devices incorporate both over-temperature and over-current protection. Output voltage is programmed with a simple resistor divider from VOUT to ADJ to GND. The TC1070, TC1071, and TC1187 are stable with an output capacitor of only 1F and have a maximum output current of 50mA, 100mA, and 150mA, respectively. For higher output versions, please see the TC1174 (IOUT = 300mA) data sheet.

特性 Features

• Very Low Ground Current for Longer Battery Life
• Adjustable Output Voltage
• Very Low Dropout Voltage
• Choice of 50mA, 100mA, 150mA Output (TC1070, TC1071, TC1187, Respectively)
• Power-Saving Shutdown Mode
• Over-Current and Over-Temperature Protection
• Pin Compatible with Bipolar Regulators

简介

TC1187属于集成电路（IC）的线性+开关稳压器。由制造生产的TC1187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。