Datasheet > NCS1002

NCS1002

更新时间： 2024-09-24 10:27:59

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
9页	205K
描述
Constant Voltage / Constant Current SecondarySide Controller

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NCS1002 数据手册

NCS1002

Constant Voltage / Constant

Current SecondarySide

Controller

Description

http://onsemi.com

MARKING

The NCS1002 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 divider that 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 adequately 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.

DIAGRAMS

SOIC−8

D SUFFIX

CASE 751

1002

ALYWG

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

(Note: Microdot may be in either location)

PIN CONNECTIONS

Features

Out 1

• Low Input Offset Voltage: 0.5 mV, Typ

• Input Common-Mode Range includes Ground

Out 2

In 2−

In 2+

In 1−

• Low Quiescent Current: 300 mA per Op Amp at V = 5 V

In 1+

• Large Output Voltage Swing

• Wide Power Supply Range: 3 V to 32 V

• High ESD Protection: 2 kV

GND

(Top View)

• These are Pb−Free Devices

Typical Applications

• Battery Chargers

• Switch Mode Power Supplies

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 8 of this data sheet.

Publication Order Number:

July, 2009 − Rev. 1

NCS1002/D

12 3 4 5 6 7...9

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