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NCS1002 - Constant Voltage/Constant Current Secondary-Side Controller

General Description

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.

Key Features

  • Low Input Offset Voltage: 0.5 mV, Typ.
  • Input Common-Mode Range includes Ground.
  • Low Quiescent Current: 300 mA per Op Amp at VCC = 5 V.
  • Large Output Voltage Swing.
  • Wide Power Supply Range: 3 V to 32 V.
  • High ESD Protection: 2 kV.
  • These are Pb.
  • Free Devices Typical.

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Datasheet Details

Part number NCS1002
Manufacturer onsemi
File Size 276.15 KB
Description Constant Voltage/Constant Current Secondary-Side Controller
Datasheet download datasheet NCS1002 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NCS1002 Constant Voltage / Constant Current Secondary­Side Controller Description 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.