MCP1792中文资料100 mA High Vin Automotive LDO数据手册Microchip规格书

描述 Description

The MCP1792/3 family devices are high voltage, low dropout (LDO) regulators, capable of generating 100 mA output current. The input voltage range of 4.5V to 55V makes it ideal in 12V to 48V power rails and in high voltage battery packs.A low UVLO at shutdown of 2.4V makes it adequate for cold cranking conditions in automotive applications. The MCP1792/3 comes in 2 standard fixed output-voltage versions: 3.3V and 5.0V. The regulator output isstable with 2.2 μF ceramic capacitors. The device is protected from short circuit events by the current foldback function and from overheating by means of thermal shutdown protection.The MCP1792 is the 3-lead version of the MCP1792/3 device family and the MCP1793 is the 5-lead version, which offers shutdown functionality (SHDN pin). While in shutdown, the quiescent current drops to 2 μA, allowing for lower, overall, power consumption. The device itself has a ground current of 100 μA, while delivering a maximum output current of 100 mA.

特性 Features

AEC-Q100 Qualified and PPAP Capable with Grade 0
Wide Input Voltage: 4.5V to 55V
Up to 70V transient
Under Voltage Lock Out (UVLO): 2.4V
Extended Working Temperature Rang: -40C to 150C
Low Quiescent Supply Current: 25 uA typical
Low Shutdown Quiescent Supply Current: 2 uA typical
Output Current Capability: 100 mA typical
Stable with Ceramic Output Capacitor: 2.2 uF
High PSRR: 80 dB @ 100 Hz tyipcal

简介

MCP1792属于集成电路（IC）的线性+开关稳压器。由制造生产的MCP1792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。