NCP4587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 NCP4587 is a CMOS 150mA LDO which switches to a low power mode under light current loads. The device automatically switches back to a fast response mode as the output load increases above 3mA or can be placed in permanent fast mode through a mode select pin.The family is available in a variety of packages: SC70-5 (SC88A), SOT23-5 and an ultra thin (0.4mm) small 1.2x1.2 mm XDFN. Voltage options are available between 0.8V and 4.0V. Voltages can be available in 100mV steps - contact your local sales office to request your required package, voltage output and discharge combinations.

特性 Features

Iq is 55uA (typical) or 1.5uA in LP mode
Automatically switches to LP mode to save power and battery life
Good PSRR - 70dB typical
Excellent noise rejection and filtering in Fast Mode
Very Low Dropout: 120 mV when Vo > 2.6V
Low Input Voltages accepted, extending battery life and reducing power dissipation
Auto Discharge, Enable high versions available
Choose between fast shutoff or fast restart of the output voltage
Excellent Output Voltage accuracy: ±1%

应用 Application

Battery powered applications Applications which are usually ON but not driving loads
Blue Ray, STB, DVD players Instrumentation, meters, cameras

简介

NCP4587属于集成电路（IC）的线性+开关稳压器。由制造生产的NCP4587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。