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STR5A451D Datasheet Off-Line PWM Controller

Manufacturer: Sanken

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General Description

The STR5A45xD Series is power ICs for switching power supplies, incorporating a MOSFET and a current mode PWM controller IC for non-isolated Buck converter and Inverting converter topologies.

The operation mode is automatically changed, in response to load, to the fixed switching frequency, to the switching frequency control, and to the burst oscillation mode.

Thus the power efficiency is improved.

Overview

For Non-Isolated Off-Line PWM Controllers with Integrated Power MOSFET STR5A45xD Series Data.

Key Features

  • Pb-free (RoHS Compliant).
  • Buck Converter.
  • Inverting Converter.
  • Current Mode PWM Control.
  • Automatically Switch the Operation Mode According to the Load Heavy Load: 60 kHz (typ. ) Fixed Switching Frequency Mode Medium Load: Green Mode, 23 kHz (typ. ) to 60 kHz (typ. ) Light Load: Burst Oscillation Mode.
  • Built-in Startup Function.
  • Built-in Error Amplifier.
  • Random Switching Function.
  • Leading Edge Blanking Function.
  • Soft Start Function.
  • Protections.

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