Datasheet

LTC4253B
6
4253bf
Typical perForMance characTerisTics
V
GATEH
vs Temperature UV Threshold vs Temperature OV Threshold vs Temperature
I
SENSE
vs (V
SENSE
– V
EE
) I
SENSE
vs Temperature TIMER Threshold vs Temperature
I
GATE
(FCL, Sink) vs Temperature V
GATE
vs Temperature V
GATEL
vs Temperature
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
I
GATE
(mA)
4253b G10
400
350
300
250
200
150
100
50
0
UV/OV = 4V
TIMER = 0V
V
SENSE
– V
EE
= 0.3V
V
GATE
= 1V
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
GATEH
(V)
4253b G13
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
UV/OV = 4V
V
GATEH
= V
IN
– V
GATE
I
IN
= 2mA
V
SENSE
– V
EE
(V)
–1.5
–1 –0.5 0 0.5 1 1.5
–I
SENSE
(mA)
4253b G16
0.01
0.1
1
10
100
1000
UV/OV = 4V
TIMER = 0V
GATE = HIGH
T
A
= 25°C
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
GATE
(V)
4253b G11
14.5
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.0
UV/OV = 4V
TIMER = 0V
V
SENSE
= V
EE
I
IN
= 2mA
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
UV THRESHOLD (V)
4253b G14
3.375
3.275
3.175
3.075
2.975
2.875
2.775
I
IN
= 2mA
V
UVH
V
UVL
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
I
SENSE
(µA)
4253b G17
0
–5
–10
–15
–20
–25
–30
UV/OV = 4V
TIMER = 0V
V
SENSE
– V
EE
= 50mV
V
GATE
= HIGH
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
V
GATEL
(V)
4253b G12
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
UV/OV = 4V
TIMER = 0V
GATE THRESHOLD
BEFORE RAMP UP
TEMPERATURE (°C)
–55 –35
5.0
OV THRESHOLD (V)
5.4
5.6
5.8
65 85 105
6.4
4253b G15
5.2
–15
5 25
45 125
6.0
6.2
V
OVH
I
IN
= 2mA
V
OVL
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
TIMER THRESHOLD (V)
4253b G18
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
I
IN
= 2mA
V
TMRH
V
TMRL