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TL1451A Datasheet, PDF (20/29 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS | |||
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TL1451A
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS024E â FEBRUARY 1983 â REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
OUTPUT TRANSISTOR ON DUTY CYCLE
vs
DEAD-TIME INPUT VOLTAGE
0
VCC = 3.6 V
10 RT = 10kâ¦
CT = 330 pF
20
STANDBY CURRENT
vs
SUPPLY VOLTAGE
TA = 25°C
2
1.75
30
1.5
40
1.25
50
1
60
0.75
70
80
90
ÃÃÃÃ 0.5
0.25
100
0
0 0.5 1 1.5 2 2.5 3 3.5 4
0
Dead-Time Input Voltage â V
10
20
30
40
VCC â Supply Voltage â V
Figure 24
Figure 25
2
1.75
1.5
1.25
1
ÃÃÃÃ 0.75
0.5
0.25
0
â25
STANDBY CURRENT
vs
FREE-AIR TEMPERATURE
Average Supply Current
VCC = 6 V, RT = 10 kâ¦,
CT = 330 pF
Stand-By Current, VCC = 40 V, No Load
Stand-By Current, VCC = 3.6 V, No Load
0
25
50
75
100
TA â Free-Air Temperature â °C
Figure 26
MAXIMUM CONTINUOUS POWER DISSIPATION
vs
FREE-AIR TEMPERATURE
1200
1100
1000
900
800
16-Pin N Plastic Dip
Thermal Resistance
125°C/W
700
600
16-Pin NS Plastic SO
500
400
300
Thermal Resistance
250°C/W
200
100
0
â25
0
25
50
75
100
TA â Free-Air Temperature
Figure 27
20
⢠POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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