MIC3490中文资料High Vin, Low Iq LDO Regulator数据手册Microchip规格书

描述 Description

The MIC3490 is a 100mA, highly accurate, low dropout regulator with high input voltage and ultra-low ground current. This combination of high input voltage and low ground current makes the MIC3490 ideal for multi-cell Li-Ion battery systems.A µCap LDO design, the MIC3490 is stable with either ceramic or tantalum output capacitors. It only requires a 2.2µF capacitor for stability.Features of the MIC3490 include enable input, thermal shutdown, current limit, reverse battery protection, and reverse leakage protection.Available in fixed and adjustable output voltage versions, the MIC3490 is offered in the SOT-23-5 package with a junction temperature range of -40°C to +125°C.The MIC3490 is pin to pin compatible with LM3490 which has been obsoleted.

特性 Features

• Wide input voltage range: 2.3V to 36V
• Ultra-low ground current: 18µA
• Low dropout voltage of 270mV at 100mA
• High output accuracy of ±2.0% over temperature
• µCap: stable with ceramic or tantalum capacitors
• Excellent line and load regulation specifications
• Zero off-mode current
• Reverse battery protection
• Reverse leakage protection
• Thermal shutdown and current limit protection
• IttyBitty® SOT-23-5 package

简介

MIC3490属于集成电路（IC）的线性+开关稳压器。由制造生产的MIC3490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。