Datasheet

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Absolute Maximum Ratings
(1)
Recommended Operating Conditions
TL494
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS074E – JANUARY 1983 – REVISED FEBRUARY 2005
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
V
CC
Supply voltage
(2)
41 V
V
I
Amplifier input voltage V
CC
+ 0.3 V
V
O
Collector output voltage 41 V
I
O
Collector output current 250 mA
D package 73
DB package 82
θ
JA
Package thermal impedance
(3) (4)
N package 67 ° C/W
NS package 64
PW package 108
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 ° C
T
stg
Storage temperature range –65 150 ° C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltages are with respect to the network ground terminal.
(3) Maximum power disipation is a function of T
J
(max), θ
JA
, and T
A
. The maximum allowable power dissipation at any allowable ambient
temperatire is P
D
= (T
J
(max) – T
A
)/ θ
JA
. Operating at the absolute maximum T
J
of 150 ° C can affect reliability.
(4) The package thermal impedance is calculated in accordance with JESD 51-7.
MIN MAX UNIT
V
CC
Supply voltage 7 40 V
V
I
Amplifier input voltage –0.3 V
CC
– 2 V
V
O
Collector output voltage 40 V
Collector output current (each transistor) 200 mA
Current into feedback terminal 0.3 mA
f
OSC
Oscillator frequency 1 300 kHz
C
T
Timing capacitor 0.47 10000 nF
R
T
Timing resistor 1.8 500 k Ω
TL494C 0 70
T
A
Operating free-air temperature ° C
TL494I –40 85
3