ISSUED DATE :2003/05/26
REVISED DATE :2004/10/05B
GTM
CORPORATION
GDTL494
V O LTA G E M O D E P W M C O N T R O L C I R C U I 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.
REF.
Min.
Max.
5.334
-
Min.
0.203
18.92
6.096
7.493
2.413
8.509
3.175
0ꢀ
Max.
-
0.279
19.69
6.604
8.001
2.667
9.525
3.683
15ꢀ
A
A1
A2
b
b1
b2
b3
c
c1
D
E
E1
e
HE
L
0.381
3.175
0.406
0.356
1.270
0.762
0.203
3.429
0.508
0.508
1.778
1.143
0.356
S
Absolute Maximum Ratings (Unless otherwise noted all is over operating free air temperature range)
PARAMETER
SYMBOL
VALUE
UNIT
V
Supply Voltage (note1)
Vcc
Vi
41
Amplifier Input Voltage
Collector output Voltage
Collector output Current
Vcc+0.3
41
V
Vo
Ico
V
250
mA
mW
Continuous Total Dissipation at (or for below)
PD
1000
25к free air Temperature(note 2)
Operating Temperature Range
Topr
0 TO 70
к
к
к
Storage Temperature Range
Tstg
-65 TO 150
300
Lead Temperature 1.6mm from Case for 60 Sec.
Tcase
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.
GDTL494
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