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SC4911 Datasheet Bias/Primary Side PWM Controller

Manufacturer: SEMTECH

General Description

The SC4911 is a highly integrated bias/primary side PWM controller designed for off-line or isolated dc-dc converters in telecommunication and data communication applications.

The high degree of integration minimizes the amount of discrete parts needed and leads to substantial cost and space saving converter designs.

The circuitry of the SC4911 includes line voltage UVLO featuring startup current less than 50µA and programwww.DataSheet4U.com mable switching frequency.

Overview

Bias/Primary Side PWM Controller with Ultra Low Start-up Current POWER.

Key Features

  • ‹ ‹ ‹ ‹ ‹ ‹ Programmable switching frequency up to 500kHz Line UVLO Protection Undervoltage Lockout Low startup current (45µA) Cycle by cycle current limit 8 pin MSOP. Available in Lead-free, fully WEEE and RoHS compliant.