TL1451A_15 Datasheet, PDF (12/36 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL1451A
ą
DUAL PULSEĆWIDTHĆMODULATION CONTROL CIRCUITS
ą
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
UNDERVOLTAGE LOCKOUT
HYSTERESIS CHARACTERISTICS
6
TA = 85°C ^{TA = 25°C} TA = –20°C
5
4
3
5V
ÁÁÁÁÁÁ
2
1
RL
7,10
I = IO
8
VDE
IO = 10 mA
0
0
1
2
3
4
5
VCC – Supply Voltage – V
Figure 11
UNDERVOLTAGE LOCKOUT CHARACTERISTIC
3.5
300
3.25
250
Threshold Voltage –VTH
(Left Scale)
3
200
Threshold Voltage –VTL
(Left Scale)
2.75
150
2.5
100
Hysteresis Voltage
(Right Scale)
2.25
50
2
0
–25
0
25
50
75
100
TA – Free-Air Temperature – °C
Figure 12
SHORT-CIRCUIT PROTECTION CHARACTERISTICS
1.30
3
1.25
Short-Circuit Protection
2.5
Latch Reset Supply Voltage
(Right Scale)
1.20
2
Short-Circuit Protection
1.15 _{Comparator Threshold Voltage}
(Left Scale)
1.10
– 25
0
25
50
75
TA – Free-Air Temperature – °C
Figure 13
1.5
1
100
12
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