GDTL494 Datasheet, PDF (1/5 Pages) GTM CORPORATION – VOLTAGE MODE PWN CONTROL CIRCUIT

ISSUED DATE :2003/05/26
REVISED DATE :2004/10/05B
GDTL494
VOLTAGE MODE PWM CONTROL CIRCUIT
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
REF.
A
A1
A2
b
b1
b2
b3
c
Millimeter
Min.
Max.
-
5.334
0.381
-
3.175
3.429
0.406
0.508
0.356
0.508
1.270
1.778
0.762
1.143
0.203
0.356
REF.
c1
D
E
E1
e
HE
L
S
Millimeter
Min. Max.
0.203
0.279
18.92
19.69
6.096
6.604
7.493
8.001
2.413
2.667
8.509
9.525
3.175
3.683
0
15
Absolute Maximum Ratings (Unless otherwise noted all is over operating free air temperature range)
PARAMETER
Supply Voltage (note1)
Amplifier Input Voltage
SYMBOL
VALUE
Vcc
41
V
Vi
Vcc+0.3
V
UNIT
Collector output Voltage
Vo
41
V
Collector output Current
Ico
250
mA
Continuous Total Dissipation at (or for below)
PD
25к free air Temperature(note 2)
1000
mW
Operating Temperature Range
Topr
0 TO 70
к
Storage Temperature Range
Tstg
-65 TO 150
к
Lead Temperature 1.6mm from Case for 60 Sec. Tcase
300
к
Note1: All voltage values, except differential voltages are with respect to the network ground terminal.
Note2:For operation above 25к free-air temperature, the dissipation derates with 9.2mW/к.
1/5