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NCS1002: Secondary-Side Controller, Constant Current, Constant Voltage

Datasheet: Constant Voltage/ Constant Current Secondary-Side Controller
Rev. 2 (180.0kB)
Product Overview
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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.
Features   Benefits
     
  • 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
Applications   End Products
  • Voltage regulation
 
  • LED Lighting
  • Switch Mode Power Supplies
Technical Documentation & Design Resources
Application Notes (1) Package Drawings (1)
Data Sheets (1)  
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCS1002DR2G Active
Pb-free
Halide free
NCS1002 SOIC-8 751-07 1 260 Tape and Reel 2500 $0.1177
Market Leadtime (weeks) : 8 to 12
PandS   (2020-09-14 00:00) : >1K

Product
Description
Pricing ($/Unit)
Compliance
Status
Type
V(BR) Typ (V)
Tolerance (%)
IQ Typ (mA)
IR Min (mA)
VF Max (V)
TA Min (°C)
TA Max (°C)
Package Type
NCS1002DR2G  
 $0.1177 
Pb
H
 Active   
Adjustable
2.5
0.4
0.4
0.04
36
-40
105
SOIC-8
Case Outlines
751-07   
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