MIC5271数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 Description

The MIC5271 is a µCap 100mA negative regulator in a SOT-23-5 package. With better than 2% initial accuracy, this regulator provides a very accurate supply voltage for applications that require a negative rail. The MIC5271 sinks 100mA of output current at very low dropout voltage (600mV maximum at 100mA of output current).The µCap regulator design is optimized to work with low-value, low-cost ceramic capacitors. The output typically requires only a 1µF capacitance for stability.Designed for applications where small packaging and efficiency are critical, the MIC5271 combines LDO design expertise with IttyBitty® packaging to improve performance and reduce power dissipation. Ground current is optimized to help improve battery life in portable applications. The MIC5271 also includes a TTL-compatible enable pin, allowing the user to put the part into a zero-current off mode.The MIC5271 is available in the 5-pin SOT-23 package for space saving applications and it is available with an adjustable output.

特性 Features

• Stable with ceramic or tantalum capacitor
• Positive and negative enable thresholds
• Low dropout voltage: -500mV @ -100mA
• Low ground current: -25µA @ load = -100µA
• Tight initial accuracy: ±2%
• Tight load and line regulation
• Thermal shutdown and current-limit protection
• IttyBitty 5-pin SOT-23 packaging
• Zero-current off mode

简介

MIC5271属于集成电路（IC）的线性+开关稳压器。由制造生产的MIC5271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。