Datasheet

LTC4253B
5
4253bf
Typical perForMance characTerisTics
I
EN
vs V
EN
Circuit Breaker Current Limit
Voltage V
CB
vs Temperature
Analog Current Limit Voltage
V
ACL
vs Temperature
Fast Current Limit Voltage V
FCL
vs
Temperature I
GATE
(Source) vs Temperature I
GATE
(ACL, Sink) vs Temperature
V
Z
vs Temperature I
IN
vs V
IN
I
IN
vs Temperature
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
Z
(V)
4253b G01
14.5
14.0
13.5
13.0
12.5
12.0
I
IN
= 2mA
V
IN
(V)
0
5 10 15 20
I
IN
(mA)
4253b G02
1000
100
10
1
0.1
T
A
= 85°C
T
A
= 125°C
T
A
= –40°C
T
A
= 25°C
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
I
IN
(µA)
4253b G03
1000
950
900
850
800
750
700
650
600
550
500
V
IN
= V
Z
– 0.3V
V
EN
(V)
0 2
4 6 8 10 12 14 16
I
EN
(µA)
4253b G04
180
160
140
120
100
80
60
40
20
0
I
IN
= 2mA
T
A
= 25°C
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
CB
(mV)
4253b G05
55
54
53
52
51
50
49
48
47
46
45
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
ACL
(mV)
4253b G06
150
140
130
120
110
100
90
80
70
60
50
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
FCL
(mV)
4253b G07
300
280
260
240
220
200
180
160
140
120
100
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
I
GATE
(µA)
4253b G08
60
58
56
54
52
50
48
46
44
42
40
UV/OV = 4V
TIMER = 0V
V
SENSE
= V
EE
V
GATE
= 0V
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
I
GATE
(mA)
4253b G09
30
25
20
15
10
5
0
UV/OV = 4V
TIMER = 0V
V
SENSE
– V
EE
= 0.15V
V
GATE
= 3V