LM494 Datasheet | National Semiconductor

Description 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 k Hz and 300 k Hz and output voltages up to 40V The operating temperature range specified for the LM494C is 0 C to 70 C and for the LM494V is b40 C to a 85 C Features Unmitted output transistors capable of 200 m A 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 parator Output control selects single ended or push-pull operation Easily synchronized (slaved) to other circuits Block Diagram TL H 10056 - 2 Connection Diagram 16-Lead DIP Ordering Information Device Code LM494IN LM494CJ LM494CN Package Code N16A J16A N16A Package Description Molded DIP Ceramic DIP Molded DIP TL H 10056 - 1 Top View C1995 National Semiconductor Corporation TL H 10056 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Storage Temperature Range Ceramic DIP Molded DIP Operating Temperature Range Industrial (LM494I) mercial (LM494C) Lead Temperature Ceramic DIP (Soldering 60 sec ) Molded DIP (Soldering 10 sec ) Internal Power Dissipation (Notes 1 2) 16L-Ceramic DIP 16L-Molded DIP Supply Voltage Voltage from Any Lead to Ground (except Lead 8 and Lead 11) b 65 C to a 175 C b 65 C to a 150 C b 40 C to a 85 C 0 C to a 70 C Output Collector Voltage Peak Collector Current (IC1 and IC2) ESD Susceptibility 42V 250 m A (to be determined) Remended Operating Conditions Power Supply Voltage (VCC) Voltage on Any Lead except Leads 8 and 11 (Referenced to Ground) (VI) Output Voltage...