UC17131/2/3
UC27131/2/3
UC37131/2/3
APPLICATION INFORMATION (cont.)
VREF
VCC
ICC
6V
11
7
+ L
PRE-REGULATOR
CREF
CSH
LS
LOAD
CCC
6
5
OUT
INPUT
COMPARATOR
IN 13
72V
POWER
SUPPLY
VREF
GND
QOUT
HS
4
3
TURN-ON/OFF
AND SHORT
CIRCUIT
CSL
1/2
VREF
PROTECTION
RCSL
GND
2
– L
IGND
12
9
10
CDEL
HYST
LED
CCDEL
RHYST
UDG-98028
Figure 2b. Low side application.
tINT
VCC
t
t
VCDEL_MAX = 5.8V
VFAULT_H = 4.9V
VCDEL
VFAULT_H
tD(ON)
OUTPUT
DRIVER
DISABLED
ENABLED
ENABLED
t
INDETERMINATE
STATE
UDG-98029
Figure 3a. Power interrupt ignore operation, high side configuration, V = 5VDC.
IN
8
TI [ TEXAS INSTRUMENTS ]
