UTCTL494

LINEAR INTEGRATED CIRCUIT

1

QW-R103-004,A

VOLTAGE MODE PWM CONTROL

CIRCUIT

DESCRIPTION

The UTC TL494 incorporates all the functions required in

the construction of a pulse-width modulation switching circuit.

Designed primarily for switching power supply control or DC-

DC convectors, it offers the systems engineer the flexibility to

tailor control circuitry to its own application.

FEATURES

*Complete PWM power control circuitry

*Uncommitted outputs for 200 mA sink or source current

*Output control selects single ended or push pull operation

*Internal circuitry prohibits double pulses over total range

*Easy synchronization

DIP-16

SOP-16

range)

PARAMETER

SYMBOL

VALUE

UNIT

Supply Voltage(note 1)

V

CC

41

V

Amplifier Input Voltage

V

I

V

V

Collector Output Voltage

V

O

41

V

Collector Output Current

I

CO

250

mA

Continuous Total Dissipation at(or for below)

25

°C Free Air Temperature(note 2)

P

D

1000

mW

Operating Temperature Range

T

opr

0 TO 70

°C

Storage Temperature Range

T

stg

-65 TO 150

°C

Lead Temperature 1.6mm from Case for 60

Sec.

T

case

300

°C

note 1: All voltage values, except differential voltages are with respect to the network ground terminal.

note 2:For operation above 25

°C free-air temperature, the dissipation derates with 9.2mW/°C.