KA3511D - Fairchild Semiconductor

KA3511D Intelligent Voltage Mode PWM IC

The KA3511/D is a fixed-frequency improvedperformance pulse-width modulation control circuit with complete housekeeping circuitry for use in the secondary side of SMPS (Switched mode power supply). It contains various functions, which are precision voltage reference, over voltage protection, under voltage protection, remote on/off control, power good signal .

Features

DataSheet4U.com
• Complete PWM control and house keeping Remote on/off section is used to control SMPS circuitry externally. If a high signal is supplied to the remote on/ off input, PWM signal becomes a high state and all
• Few external components secondary outputs are grounded. The remote on/off
• Precision voltage reference trimmed to 2% signal is transferred with some on-delay and off-delay time of 8ms, 24ms respectively.
• Dual output for push-pull operation
• Precision reference section The reference voltage trimmed to ± 2% (4.9V≤Vref≤5.1V) PG (Power good signal generator) section Power .