Datasheet

UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45
UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45
SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010
13
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TYPICAL CHARACTERISTICS
Figure 14
6
16
15
13
11
8
7
10
9
12
14
--50 --25 0 25 50 75 100 125
UVLO
ON
UVLO
OFF
UNDER
V
OLT
A
GE LOC
K
OUT
vs
TEMPERATURE (UCC38C42 & UCC38C44)
V
UVLO
-- U V L O V o l t a g e -- V
T
J
-- Te mperature -- °C
Figure 15
UNDERVOLTAGE LOCKOUT
vs
TEMPERATURE (UCC38C43 & UCC38C45)
V
UVLO
-- U V L O V o l t a g e -- V
T
J
-- Te mperature -- °C
7.0
9.0
8.8
8.4
8.0
7.4
7.2
7.8
7.6
8.2
8.6
--50 --25 0 25 50 75 100 125
UVLO
ON
UVLO
OFF
6.3
7.3
7.2
7.0
6.8
6.5
6.4
6.7
6.6
7.1
--50 --25 0 25 50 75 100 125
6.9
Figure 16
UNDERVOLTAGE LOCKOUT
vs
TEMPERATURE (UCC38C40 & UCC38C41)
V
UVLO
-- U V L O V o l t a g e -- V
T
J
-- Te mperature -- °C
UVLO
ON
UVLO
OFF