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KA3511DS Datasheet Intelligent Voltage Mode Pwm Ic

Manufacturer: Fairchild (now onsemi)

Overview: .. .fairchildsemi. KA3511DS Intelligent Voltage Mode PWM IC.

General Description

The KA3511DS is a fixed frequency improved performance pulse width modulation control circuit with plete 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 generator and etc.

OVP (Over voltage protection) section It has OVP functions for +3.3V,+5V,+12V and PT outputs.

Key Features

  • Complete PWM control and house keeping circuitry Few external components Precision voltage reference trimmed to 2% Dual output for push-pull operation Each output TR for 200mA sink current Variable duty cycle by dead time control Soft start capability by using dead time control Double pulse suppression logic Over voltage protection for 3.3V / 5V / 12V Under.

KA3511DS Distributor