Datasheet > NCS1002A

NCS1002A

更新时间： 2024-11-08 01:16:19

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
9页	101K
描述
Constant Voltage / Constant Current SecondarySide Controller

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NCS1002A 数据手册

NCS1002A

Constant Voltage / Constant

Current SecondarySide

Controller

Description

http://onsemi.com

MARKING

The NCS1002A is a performance upgrade from the NCS1002

focused on reducing power consumption in applications that require

more efficient operation. It 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 NCS1002A 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 NCS1002A 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

1002A

ALYWG

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

(Note: Microdot may be in either location)

PIN CONNECTIONS

Out 1

Features

Out 2

In 2−

In 2+

In 1−

In 1+

• Low Input Offset Voltage: 0.5 mV, Typ

• Input Common-Mode Range includes Ground

• Low Quiescent Current: 75 mA per Op Amp at V = 5 V

GND

• Large Output Voltage Swing

• Wide Power Supply Range: 3 V to 36 V

• High ESD Protection: 2 kV

• This is a Pb−Free Device

(Top View)

Output 1

Inputs 1

Typical Applications

• Battery Chargers

• Switch Mode Power Supplies

Output 2

Inputs 2

2.5V

GND

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 8 of this data sheet.

Publication Order Number:

June, 2014 − Rev. 5

NCS1002A/D

12 3 4 5 6 7...9

中文翻译

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