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OB2279 - Current Mode PWM Controller

Download the OB2279 datasheet PDF. This datasheet also covers the OB2279-On variant, as both devices belong to the same current mode pwm controller family and are provided as variant models within a single manufacturer datasheet.

Description

OB2279 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 externally programmable and trimmed to tight range.

Features

  • On-Bright Proprietary Frequency Shuffling Technology for Improved EMI Performance.
  • Power On Soft Start.
  • 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(3uA) and Low Operating Current (2.3mA).
  • Leading Edge Blanking on Current Sense Input.
  • Complete Protection Coverage with.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (OB2279-On-Bright.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number OB2279
Manufacturer On-Bright
File Size 364.52 KB
Description Current Mode PWM Controller
Datasheet download datasheet OB2279 Datasheet

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Other Datasheets by On-Bright

Part Number Description
OB2273 High Performance Current Mode PWM Controller
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Full PDF Text Transcription

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RESLEEPRAILSCEAELAODSNNEFTIO:oDD2EOA7NP9NT0IDO0AT6L8COPY OB2279 Current Mode PWM ControllerFreq Shuffling with Latch Shutdown GENERAL DESCRIPTION OB2279 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 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. 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 design with OB2279. A large value resistor could thus be used in the startup circuit for reduced power loss.
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