UC17131/2/3
UC27131/2/3
UC37131/2/3
APPLICATION INFORMATION (cont.)
t
INT
VCC
t
V
CDEL_MAX
= 5.8V
V
CDEL
V
FAULT_H
= 4.9V
V
FAULT_L
= 1.0V
V
FAULT_H
t
t
D(ON)
OUTPUT
DRIVER
DISABLED
ENABLED
t
D(OFF)
t
D(ON)
DISABLED
ENABLED
t
LED
INDETERMINATE
STATE
t
UDG-98030
Figure 3b. Power interrupt fault operation, high side configuration, V
IN
= 5VDC.
I
LOAD
t
4.9V
V
CDEL
t
t
SC
OUTPUT
DRIVER
t
t
R(OFF)
LED
t
UDG-98031
Figure 3c. Overcurrent fault operation.
UNITRODE CORPORATION
7 CONTINENTAL BOULEVARD
•
MERRIMACK, NH 03054
TEL (603) 424-2410
•
FAX (603) 424-3460
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