Offline, Primary-Side Regulator with CC/CV Control and a 700V MOSFET

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Product Description

The MP020A-5 is an offline, primary-side regulator that provides accurate constant voltage and constant current regulation without an optocoupler or a secondary feedback circuit. The MP020A-5 has an integrated 700V MOSFET. The MP020A-5's variable off-time control allows a flyback converter to operate in discontinuous conduction mode (DCM). The MP020A-5 also features protection functions such as VCC under-voltage lockout (UVLO), over-current protection (OCP), over-temperature protection (OTP), open-circuit protection (OCkP), and over-voltage protection (OVP). Its internal high-voltage start-up current source and power-saving technologies limit the no-load power consumption to less than 30mW. The MP020A-5's variable switching frequency technology provides natural spectrum shaping to smooth the EMI signature, making it suitable for offline, low-power battery chargers and adapters. The MP020A-5 is available in a SOIC8-7A package.

Product Features

  • Primary-Side Control without Optocoupler or Secondary Feedback Circuit
  • Precise Constant Current and Constant Voltage Control (CC/CV)
  • Integrated 700V MOSFET with Minimal External Components
  • Variable Off Time, Peak-Current Control
  • 550? High-Voltage Current Source
  • 30mW No-Load Power Consumption
  • Programmable Cable Compensation
  • Natural Spectrum Shaping for Improved EMI Signature
  • Low Cost and Simple External Circuit
  • Available in a SOIC8-7A Package


  • Power Range DefinedNo
  • GradeCatalog
  • TypeRegulator
  • VCC (max) (V)28
  • Isw Limit (A)0.38
  • Vfb (V)4
  • Vac (max) (V)265
  • Vbr (V)700
  • Rds(on) (Ω)10
  • fsw (max) (kHz)75
  • Vac (min) (V)85