NCP785A数据手册集成电路（IC）的稳压器-线性规格书PDF

描述 Description

The NCP785A is a high-performance >10mA linear regulator, offering a very
wide operating input voltage range of up to 450 V DC operating and 700V DC maximum.
It is an ideal choice for high input voltage applications such as industrial and home
automation, smart metering, home appliances. The NCP785A offers ±5% of output voltage
accuracy, extremely high power supply rejection ratio and ultra low
quiescent current of typ. 15µA. The NCP785A is very well suited for harsh environmental conditions.
The NCP785A is offered with fixed output voltages: 3.3 V, 5.0 V, 12 V, 15 V.
SOT−89 package offers good thermal performance
and very small PCB size.

特性 Features

• Operating Input Voltage: Up to 450 VDC
• Allows for direct AC mains connection
• PSRR: 80 dB at 120 Hz
• Effectively reduces the input ripple
• Quiescent Current: 15µA Typical
• Greatly reduces the no-load power consumption
• SOT89 Package
• Ideally suited for space constrained applications

应用 Application

•Industrial, Home Automation, White Goods, Lighting
• Low-Power MCU Applications Power Supply
• Smaller Size, No-Load Efficient replacement for Capacitive Dropper
• Circuit Breakers
• Smoke Sensors
• Home Appliances
• Smart Meters

简介

NCP785A属于集成电路（IC）的稳压器-线性。由制造生产的NCP785A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。