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ISSUED DATE :2003/05/26

REVISED DATE :2004/10/05B

G

V

T

Description

The GDTL494 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.

Package Dimensions

Millimeter

Millimeter

REF.

Min.

Max.

REF.

Min.

Max.

A

-

5.334

c1

0.203

0.279

A1

0.381

-

D

18.92

19.69

A2

3.175

3.429

E

6.096

6.604

b

0.406

0.508

E1

7.493

8.001

b1

0.356

0.508

e

2.413

2.667

b2

1.270

1.778

HE

8.509

9.525

b3

0.762

1.143

L

3.175

3.683

c

0.203

0.356

S

0

15

PARAMETER

SYMBOL

VALUE

UNIT

Supply Voltage (note1)

Vcc

41

V

Amplifier Input Voltage

Vi

Vcc+0.3

V

Collector output Voltage

Vo

41

V

Collector output Current

Ico

250

mA

Continuous Total Dissipation at (or for below)

25 : free air Temperature(note 2)

1000

mW

Operating Temperature Range

Topr

0 TO 70

:

Storage Temperature Range

Tstg

-65 TO 150

:

Lead Temperature 1.6mm from Case for 60 Sec.

Tcase

300

:

Note1: All voltage values, except differential voltages are with respect to the network ground terminal.

Note2:For operation above 25 : free-air temperature, the dissipation derates with 9.2mW/ : .