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

Description: The NCS1002 Constant Voltage and Constant Current ...
  • 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
  • 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
  • Voltage regulation
  • End Products
  • LED Lighting
  • Switch Mode Power Supplies
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Secondary-Side Controller, Constant Current, Constant Voltage
  • Package Type: SOIC-8
  • Package Case Outline: 751-07
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • Digikey:>10K
  • Newark:>1K
  • PandS:>1K
  • Specifications
  • Type: Adjustable 
  • V(BR) Typ (V): 2.5 
  • Tolerance (%): 0.4 
  • IQ Typ (mA): 0.4 
  • IR Min (mA): 0.04 
  • VF Max (V): 36 
  • TA Min (°C): -40 
  • TA Max (°C): 105 
  • Package Type: SOIC-8 
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