Datasheet

LT4256-3
4
42563fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
GATE Pull-Up Current
vs Temperature
GATE Pull-Down Current
vs Temperature
TIMER Currents vs V
CC
TIMER Currents vs Temperature
TEMPERATURE (°C)
–50
–40
GATE PULL-UP CURRENT (µA)
–35
–30
–20
0
–25
02550
42563 G04
75
100
–10
–25
–5
–15
32µA @ 25°C
TEMPERATURE (°C)
–50
56
GATE PULL-DOWN CURRENT (mA)
57
58
60
63
–25
02550
42563 G05
75
100
62
59
61
V
GATE
– V
OUT
Voltage
vs Temperature
TEMPERATURE (°C)
–50
10.0
V
GATE
– V
OUT
VOLTAGE (V)
10.5
11.0
12.0
14.0
–25
02550
42563 G07
75
100
13.0
13.5
11.5
12.5
V
CC
= 80V
V
CC
= 48V
V
CC
= 20V
V
CC
(V)
10
I
TIMER
(µA)
0
2.5
5.0
40 60
42563 G09
–80
–100
20 30
50 70 80
–120
–140
PULL-UP CURRENT
PULL-DOWN CURRENT
TIMER Shutdown Threshold
vs Temperature
TEMPERATURE (°C)
–50
0
TIMER SHUTDOWN THRESHOLD (V)
4.2
4.4
4.8
5.4
–25
02550
42563 G10
75
100
5.2
4.6
5.0
Specifications are at T
A
= 25°C unless otherwise noted.
GATE Pull-Down Capability vs V
CC
Below Minimum Operating Voltage
V
CC
(V)
0
0
I
GATE
(mA )
10
20
30
40
60
2
468
42563 G17
10 12
50
V
GATE
– V
OUT
Voltage
vs Temperature
TEMPERATURE (°C)
–50
0
V
GATE
– V
OUT
VOLTAGE (V)
2
4
8
14
–25
02550
42563 G06
75
100
12
6
10
V
CC
= 10.8V
V
CC
= 12V
V
CC
= 18V
UV Current vs UV Voltage
V
UV
(V)
01234
–1.4
I
UV
(µA)
–1.2
–0.8
–0.6
–0.4
40
0.4
42563 G18
–1.0
10 20 30 50
–0.2
0
0.2
TEMPERATURE (°C)
–50
–140
–120
I
TIMER
(µA)
–100
–80
0
5.0
–25
02550
42563 G08
75
100
2.5
PULL-UP CURRENT
PULL-DOWN CURRENT