MIC5258中文资料150mA LDO w/ Power Good数据手册Microchip规格书

描述 Description

The MIC5258 is an efficient, precise CMOS voltage regulator with Power Good output. The MIC5258 offers better than 3% initial accuracy and constant ground current (typically 100µA) over load .The MIC5258 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices.Key features include current limit, thermal shutdown, a push-pull output for faster transient response, and an active clamp to speed up device turnoff. Available in the IttyBitty® SOT-23-5 package, the MIC5258 is a fixed 1.2V regulator.

特性 Features

• Power Good indicator
• Load-independent, ultra-low ground current: 100mA
• 150mA output current
• Current limiting
• Thermal shutdown
• Tight load and line regulation
• Zero off-mode current
• Stability with low-ESR capacitors
• Fast transient response
• TTL logic-controlled enable input

简介

MIC5258属于集成电路（IC）的线性+开关稳压器。由制造生产的MIC5258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。