LT8301 – 42VIN Micropower No-Opto Isolated Flyback Converter with 65V/1.2A Switch

Features

• 2.7V to 42V Input Voltage Range
• 1.2A, 65V Internal DMOS Power Switch
• Low Quiescent Current:
  100μA in Sleep Mode
  350μA in Active Mode
• Boundary Mode Operation at Heavy Load
• Low-Ripple Burst Mode® Operation at Light Load
• Minimum Load <0.5% (Typ) of Full Output
• V_OUT Set with a Single External Resistor
• No Transformer Third Winding or Opto-Isolator Required for Regulation
• Accurate EN/UVLO Threshold and Hysteresis
• Internal Compensation and Soft-Start
• Output Short-Circuit Protection
• 5-Lead TSOT-23 Package

Typical Application

Description

The LT®8301 is a micropower isolated flyback converter. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count.

For more detail: LT8301 – 42VIN Micropower No-Opto Isolated Flyback Converter with 65V/1.2A Switch