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OB2276 - High Performance Current Mode PWM Controller

This page provides the datasheet information for the OB2276, a member of the OB2276-On High Performance Current Mode PWM Controller family.

Datasheet Summary

Description

OB2276 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications.

PWM switching frequency at normal operation is internally fixed and is trimmed to tight range.

Features

  • Power on Soft Start Reducing MOSFET Vds Stress.
  • Frequency shuffling for EMI.
  • Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design.
  • Audio Noise Free Operation.
  • Fixed 65KHZ Switching Frequency.
  • Comprehensive Protection Coverage o VDD Under Voltage Lockout with Hysteresis (UVLO) o Cycle-by-cycle over current threshold setting for constant output power limiting over universal input voltage range o Overload Protection (OLP) with autorecov.

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Datasheet preview – OB2276

Datasheet Details

Part number OB2276
Manufacturer On-Bright
File Size 143.50 KB
Description High Performance Current Mode PWM Controller
Datasheet download datasheet OB2276 Datasheet
Additional preview pages of the OB2276 datasheet.

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Full PDF Text Transcription

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OB2276 High Performance Current Mode PWM Controller GENERAL DESCRIPTION OB2276 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications. PWM switching frequency at normal operation is internally fixed and is trimmed to tight range. At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss. Lower standby power and higher conversion efficiency is thus achieved. VDD low startup current and low operating current contribute to a reliable power on startup and low standby design with OB2276.
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