TL1451A
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
UNDERVOLTAGE LOCKOUT
UNDERVOLTAGE LOCKOUT CHARACTERISTIC
HYSTERESIS CHARACTERISTICS
300
250
200
150
100
50
3.5
3.25
3
6
5
4
3
2
1
0
T
A
= 25°C
T
A
= –20°C
T
= 85°C
A
Threshold Voltage –V
(Left Scale)
TH
Threshold Voltage –V
(Left Scale)
TL
2.75
2.5
5 V
Hysteresis Voltage
(Right Scale)
R
L
2.25
2
7,10
8
I = I
O
V
DE
0
I
O
= 10 mA
–25
0
25
50
75
100
0
1
2
3
4
5
T
A
– Free-Air Temperature – °C
V
CC
– Supply Voltage – V
Figure 11
Figure 12
SHORT-CIRCUIT PROTECTION CHARACTERISTICS
3
1.30
Short-Circuit Protection
Latch Reset Supply Voltage
(Right Scale)
2.5
2
1.25
1.20
1.15
1.10
Short-Circuit Protection
Comparator Threshold Voltage
(Left Scale)
1.5
1
– 25
0
25
50
75
100
T
A
– Free-Air Temperature – °C
Figure 13
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
