TL1451A
DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
absolute maximum ratings over operating free-air temperature range
†
Supply voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 V
Amplifier input voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V
Collector output voltage, V
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 V
Collector output current, I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 mA
Continuous power total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, T
A
C suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20°C to 85°C
Q suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 125°C
M suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† 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.
DISSIPATION RATING TABLE
PACKAGE
D
DB
N
NS
PW
FK
J
TA
≤
25°C
POWER RATING
1088 mW
775 mW
1000 mW
500 mW
838 mW
1375 mW
1375 mW
DERATING FACTOR
ABOVE TA = 25°C
8.7 mW/°C
6.2 mW/°C
8.0 mW/°C
4.0 mW/°C
6.7 mW/°C
11.0 mW/°C
11.0 mW/°C
TA = 70°C
POWER RATING
696 mW
496 mW
640 mW
320 mW
536 mW
880 mW
880 mW
TA = 85°C
POWER RATING
566 mW
403 mW
520 mW
260 mW
436 mW
715 mW
715 mW
TA = 125°C
POWER RATING
218 mW
—
—
—
168 mW
275 mW
275 mW
recommended operating conditions
MIN
Supply voltage, VCC
Amplifier input voltage, VI
Collector output voltage, VO
Collector output current, IO
Current into feedback terminal
Feedback resistor, RF
Timing capacitor, CT
Timing resistor, RT
Oscillator frequency
C suffix
Operating free-air temperature, TA
g
,
Q suffix
M suffix
100
150
5.1
1
–20
–40
–55
15000
100
500
85
125
125
°C
3.6
1.05
MAX
50
1.45
50
20
45
UNIT
V
V
V
mA
µA
kΩ
pF
kΩ
kHz
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