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HM2741 - High Performance Low Cost Off-line PWM Power Switch

Download the HM2741 datasheet PDF. This datasheet also covers the HM2740 variant, as both devices belong to the same high performance low cost off-line pwm power switch family and are provided as variant models within a single manufacturer datasheet.

General Description

HM274X family is a high performance Switch Mode Power Supply Switcher for low power off-line application with minimum components in typical buck solution.

This family has built-in high break down voltage MOSFET to withstand high surge input.

Key Features

  • Integrated with 650V Pow er MOSFET and HV Startup Circuit.
  • Multi Mode Control with Audio Noise Free Operation.
  • Supports Buck and Buck-Boost Topologies.
  • Default 12V Output with FB floated.
  • Less than 50mW Standby Power.
  • Green Mode Operation for High Efficiency.
  • Good Line and Load Regulation.
  • Built-in Soft Start.
  • Build in Protections:.
  • Over Load Protection (OLP).
  • Cycle-by-Cycle Current Limiting (OCP).
  • Output OVP.
  • VDD OVP, UVLO & Clam.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (HM2740-HMsemi.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number HM2741
Manufacturer H&M Semiconductor
File Size 411.94 KB
Description High Performance Low Cost Off-line PWM Power Switch
Datasheet download datasheet HM2741 Datasheet

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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.

View original datasheet text
HM2740/HM2741 High Performance Low Cost Off-line PWM Power Switch FEATURES  Integrated with 650V Pow er MOSFET and HV Startup Circuit  Multi Mode Control with Audio Noise Free Operation  Supports Buck and Buck-Boost Topologies  Default 12V Output with FB floated  Less than 50mW Standby Power  Green Mode Operation for High Efficiency  Good Line and Load Regulation  Built-in Soft Start  Build in Protections:  Over Load Protection (OLP)  Cycle-by-Cycle Current Limiting (OCP)  Output OVP  VDD OVP, UVLO & Clamp  Available with SOP-8 Package APPLICATIONS  Small Home Appliance  Industry Controls TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION HM274X family is a high performance Switch Mode Power Supply Switcher for low power off-line application with minimum components in typica