MIC5237中文资料500mA 3% Accuracy LDO, Improved LM2937数据手册Microchip规格书

描述 Description

The MIC5237 is a general purpose low-dropout regulator capable of 500mA output current with better than 3% output voltage accuracy. Using proprietary Superβeta PNP® process with a PNP pass element, these regulators feature less than 300mV dropout voltage and typically 8mA ground current at full load.Designed for applications that require moderate current over a broad input voltage range, including handheld and battery-powered devices, the MIC5237 is intended for applications that can tolerate moderate voltage drop at higher current.Key features include low ground current to help prolong battery life, reversed battery protection, current limiting, over-temperature shutdown, and thermally efficient packaging. The MIC5237 is available in fixed output voltages only.For space-critical applications and improved performance, see the MIC5209 and MIC5219. For output current requirements up to 750mA, see the MIC2937.

特性 Features

• Guaranteed 500mA output over the full operating temperature range
• Low 300mV typical dropout voltage at full load
• Extremely tight load and line regulation
• Current and thermal limiting
• Reversed battery protection
• TO-220 and TO-263 packages
• Low temperature coefficient
• No-load stability
• Low noise output

简介

MIC5237属于集成电路（IC）的线性+开关稳压器。由制造生产的MIC5237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。