TL1451A
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
PROTECTION ENABLE TIME
vs
PROTECTION ENABLE CAPACITANCE
18
tpe – Protection Enable Time – s
t pe
15
12
9
6
3
0
0
200
50
100
150
CPE – Protection Enable Capacitance –
µF
SCP
15
Vref
16
170 kΩ
Short-circuit
Protection
Comparator
ERROR AMP 1
ERROR AMP 2
Vref
Vref
250
12 kΩ
CPE
S
R
Protection
Latch
U.V.L.O.
+
1.25 V
–
Figure 14
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
13