STMicroelectronics SEA05 Advanced Constant Voltage/Current Controller

STMicroelectronics SEA05 Advanced Constant Voltage/Constant Current Controller is a highly integrated solution for SMPS applications requiring a dual control loop to perform CV (constant voltage) and CC (constant current) regulation. The SEA05 Advanced Constant Voltage/Constant Current Controller integrates a voltage reference, two op-amps (with OR-ed open-drain outputs), and a lowside current sensing circuit. The voltage reference of the STMicroelectronics SEA05 Advanced Constant Voltage/Constant Current Controller, along with one op-amp, is the core of the voltage control loop; the current sensing circuit and the other op-amp make up the current control loop.

Features

  • Constant voltage and constant current control
  • 3.5V - 36V operating VCC range
  • 200μA low quiescent consumption
  • 2.5V voltage reference
  • ±0.5% voltage control loop accuracy
  • 50mV current sense threshold
  • Open-drain output stage
  • Low external component count
  • SOT23-6L micro package

Applications

  • Battery chargers
  • AC-DC adapters
  • LED drivers

Application Schematic

STMicroelectronics SEA05 Advanced Constant Voltage/Current Controller
Published: 2012-03-12 | Updated: 2022-03-11