LM494 Datasheet - National Semiconductor

LM494 Pulse Width Modulated Controller

The LM494 is a monolithic integrated circuit which includes all the necessary building blocks for the design of pulse width modulated (PWM) switching power supplies including push-pull bridge and series configurations The device can operate at switching frequencies between 1 0 kHz and 300 kHz and ou.

LM494 Features

* Y Y Y Y Y Y Y Uncommitted output transistors capable of 200 mA source or sink On-chip error amplifiers On-chip 5 0V reference Internal protection from double pulsing of outputs with narrow pulse widths or with supply voltages below specified limits Dead time control comparator Output control sele

LM494_NationalSemiconductor.pdf