NCP148中文资料LDO Regulator, Ultra-Low Noise and High PSRR, 450 mA数据手册ONSEMI规格书

描述 Description

The NCP148 is a linear regulator capable of supplying 450 mA output current. Designed to meet the requirements of RF and analog circuits, the NCP148 device provides low noise, high PSRR, low quiescent current, and very good load/line transients.

The NCP148 offers soft−start function with optimized slew rate control to use in camera module. The device is designed to work with a 1 uF output ceramic capacitor. It is available in ultra−small 0.35P, 0.65 mm x 0.65 mm Chip Scale Package (CSP).

特性 Features

• Ultra High PSRR 90dB at 1kHz, 20mA
• Excellent for power sensitive device like Wi-Fi module
• Ultra Low Output Noise 10µVRMS
• Very well suited for noise sensitive application
• Very Low Dropout 80mV@250mA
• Allow work with very low VIN-VOUT difference
• Operating Input Voltage Range 1.9V to 5.5V
• Suitable for battery powered device
• Ultra Low Quiescent current 18µA
• Improved efficiency during light load conditions
• Available in CSP4 0.35P package
• Great for space constrains application
• Soft-start with optimized slew rate
• Supply modern image sensor requirements

应用 Application

• Image sensor
• RF Modules
• Battery Powered Equipment
• Precision Analog Circuits
• Audio codec
• Camera Modules
• Tablets
• Cameras and camcoders
• Smartphones
• Surveillance Cameras

简介

NCP148属于集成电路（IC）的线性+开关稳压器。由制造生产的NCP148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。