TL1453C
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS039A – FEBRUARY 1990 – REVISED DECEMBER 1990
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
(see Note 1) 41 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amplifier input voltage 20 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collector output voltage 51 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collector output current 21 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
–20°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTE 1: All voltage values are with respect to network ground terminal.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 85°C
POWER RATING
N 1000 mW 8 mW/°C 520 mW
NS 725 mW 5.8 mW/°C 397 mW
recommended operating conditions
MIN MAX UNIT
Supply voltage, V
CC
3.6 40 V
Amplifier input voltage, V
I
1.05 1.45 V
Collector output voltage, V
O
50 V
Collector output current 20 mA
Current into feedback terminal 45 µA
Feedback resistor, R
F
100 kΩ
Timing capacitor , C
T
150 15000 pF
Timing resistor , R
T
5.1 100 kΩ
Oscillator frequency 1 500 kHz
Operating free-air temperature, T
A
–20 85 °C
electrical characteristics over recommended operating free-air temperature range, VCC = 6 V,
f = 200 kHz (unless otherwise noted)
reference section
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
Output voltage (pin 16) IO = 1 mA 2.4 2.5 2.6 V