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OB2268 Datasheet Current Mode Pwm Controller

Manufacturer: LITEON

Overview: GENERAL.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

OB2268/9 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in above 20W power level.

PWM switching frequency at normal operation is externally programmable and trimmed to tight range.

At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss.

Key Features

  • Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design.
  • Audio Noise Free Operation.
  • External Programmable PWM Switching Frequency.
  • Internal Synchronized Slope Compensation.
  • Low VIN/VDD Startup Current(4uA) and Low Operating Current (2.3mA).
  • Leading Edge Blanking on Current Sense Input.
  • Complete Protection Coverage With Auto Self- Recovery o External Programmable Over Temperature Protection (OTP) o With or Without On-chip VDD OVP f.

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