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OB2268 - Current Mode PWM Controller

Download the OB2268 datasheet PDF. This datasheet also covers the OB2269 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

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.

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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (OB2269_Liteon.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number OB2268
Manufacturer LITEON
File Size 249.45 KB
Description Current Mode PWM Controller
Datasheet download datasheet OB2268 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
OB2268 Flyback switching power supply applications On-Bright Electronics
OB2262 Current Mode PWM Controller On-Bright
OB2263 Current Mode PWM Controller On-Bright
OB2263 Current Mode PWM Controller Kexin
OB2263AP Current Mode PWM Controller On-Bright

Other Datasheets by LITEON

Part Number Description
OB2268AP Current Mode PWM Controller
OB2269 Current Mode PWM Controller
OB2269CP Current Mode PWM Controller

Full PDF Text Transcription

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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. 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 OB2268/9. A large value resistor could thus be used in the startup circuit to minimize the standby power.
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