NCS1002中文资料Secondary-Side Controller, Constant Current, Constant Voltage数据手册ONSEMI规格书

描述 Description

The NCS1002 Constant Voltage and Constant Current Secondary Controller is a highly integrated solution for Switching Mode Power Supply (SMPS) applications requiring a dual control loop to perform Constant Voltage (CV) and Constant Current (CC) regulation. The NCS1002 integrates a 2.5 V voltage reference and two precision op amps. The voltage reference, along with Op Amp 1, is the core of the voltage control loop. Op Amp 2 is an independent, uncommitted amplifier specifically designed for the current control.Key external components needed to complete the two control loops are: (a)A resistor dividerthat senses the output of the power supply (battery charger) and fixes the voltage regulation set point at the specified value. (b) A sense resistor that feeds the current sensing circuit with a voltage proportional to the DC output current. This resistor determines the current regulation set point and must be adquately rated in terms of power dissipation. The NCS1002 comes in a small 8-pin SOIC package and is ideal for space-shrunk applications such as battery chargers.

特性 Features

• Low Input Offset Voltage: 0.5mV, Typ
• Improved control
• Input Common-Mode Range includes Ground.
• Greater design range
• Low Quiescent Current: 300uA per op amp at Vcc=5V.
• Lower heat dissipation
• Wide Power Supply Range: 3V to 32V
• Greater flexibility

应用 Application

• Voltage regulation
• LED Lighting
• Switch Mode Power Supplies

简介

NCS1002属于集成电路（IC）的电源管理-专用。由制造生产的NCS1002电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。