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SC2569 - High Performance Current Mode PWM Controller

This page provides the datasheet information for the SC2569, a member of the SC2569-Safety High Performance Current Mode PWM Controller family.

Datasheet Summary

Description

SC2569 combines a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective off line flyback converter applications.

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.
  • Power-on Soft Start Reducing MOS Stress.
  • Audio Noise Free Operation.
  • External Programmable PWM Switching Frequency.
  • Low VDD startup and operating current.
  • Frequency jitter to Minimize EMI.
  • Leading edge blanking on current sense.
  • Internal Synchronized Slope Compensation.
  • Low VIN/VDD Startup Current(6.5uA) and Low Operating Current(2.0mA).
  • Complete Protection Cov.

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Datasheet preview – SC2569

Datasheet Details

Part number SC2569
Manufacturer Safety-Chip
File Size 518.93 KB
Description High Performance Current Mode PWM Controller
Datasheet download datasheet SC2569 Datasheet
Additional preview pages of the SC2569 datasheet.

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Full PDF Text Transcription

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SC2569 High Performance Current Mode PWM Controller Description SC2569 combines a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective off line 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 is 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 SC2569. A large value resistor could thus be used in the startup circuit to minimize the standby power.
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