Datasheet

8
UC17131/2/3
UC27131/2/3
UC37131/2/3
C
CDEL
13
12
11
VREF
IN
6
10
3
7
LS
CSH
2
GND
6V
PRE-REGULATOR
INPUT
COMPARATOR
1/2
VREF
HYST
9
LED
TURN-ON/OFF
AND SHORT
CIRCUIT
PROTECTION
CDEL
4
HS
5
Q
OUT
72V
–L
CSL
+L
OUT
C
CC
I
GND
R
CSL
LOAD
POWER
SUPPLY
C
REF
R
HYST
VREF
GND
VCC
I
CC
Figure 2b. Low side application.
APPLICATION INFORMATION (cont.)
UDG-98028
OUTPUT
DRIVER
DISABLED ENABLED
V
CDEL
VCC
V
FAULT_H
=4.9V
V
FAULT_H
t
INT
ENABLED
INDETERMINATE
STATE
t
D(ON)
t
t
t
V
CDEL_MAX
=5.8V
Figure 3a. Power interrupt ignore operation, high side configuration, V
IN
= 5VDC.
UDG-98029