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NCS1002A: Constant Voltage / Constant Current SecondarySide Controller

Datasheet: Constant Voltage / Constant Current Secondary-Side Controller
Rev. 6 (137kB)
Product Overview
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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.
Features
 
  • Low Input Offset Voltage: 0.5 mV, Typ
  • Input Common-Mode Range includes Ground
  • Low Quiescent Current: 75 µA per Op Amp at VCC = 5 V
  • Large Output Voltage Swing
  • Wide Power Supply Range: 3 V to 36 V
  • High ESD Protection: 2 kV
Applications   End Products
  • Switch Mode Power Supplies
 
  • Battery Chargers
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCS1002ADR2G Active
Pb-free
Halide free
NCS1002A SOIC-8 751-07 1 260 Tape and Reel 2500 $0.1508
Market Leadtime (weeks) : Contact Factory

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
NCS1002ADR2G  
 $0.1508 
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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