Datasheet

LT1910
4
1910fa
TYPICAL PERFORMANCE CHARACTERISTICS
Timer Charge Current
vs Tempeature
Drain Sense Threshold Voltage
vs Temperature
MOSFET Gate Voltage Above V
+
(V
GATE
– V
+
) vs Supply Voltage
MOSFET Gate Drive Current
vs V
GATE
– V
+
Fault Threshold Voltage
vs Temperature
Fault Output Low Voltage
vs Temperature
Input Current vs Temperature
Timer Threshold Voltage
vs Temperature
Timer Clamp Voltage
vs Temperature
TEMPERATURE (°C)
–50
0
INPUT CURRENT (μA)
40
80
120
–25
0
25 50
1910 G04
75
160
200
20
60
100
140
180
125100
V
IN
= 5V
V
IN
= 2V
TEMPERATURE (°C)
–50
TIMER THRESHOLD VOLTAGE (V)
2.7
2.8
2.9
3.0
3.2
–25
02550
1910 G05
75 125100
3.1
2.6
V
IN
= 2V
TEMPERATURE (°C)
–50
TIMER CLAMP VOLTAGE (V)
3.3
3.4
3.5
3.6
3.8
–25
0
25
50
1910 G06
75
125
100
3.7
3.2
V
IN
≤ 0.8V
TEMPERATURE (°C)
–50
TIMER CHARGE CURRENT (μA)
10
12
14
16
20
–25
02550
1910 G07
75 125100
18
8
V
IN
= V
T
= 2V
TEMPERATURE (°C)
–50
40
DRAIN SENSE THRESHOLD VOLTAGE (mV)
50
60
70
65
–25
0
25 50
1910 G08
75
80
90
45
55
75
85
125100
V
+
= 24V
SUPPLY VOLTAGE (V)
0
MOSFET GATE VOLTAGE ABOVE V
+
(V
GATE
– V
+
) (V)
16
14
12
10
8
6
4
2
0
40
LTC1266 • F04
10 20 30 503551525 45
T
A
= 125°C
T
A
= –40°C
T
A
= 25°C
V
GATE
– V
+
(V)
024
MOSFET GATE DRIVE CURRENT (μA)
1
10
100
6 8 10 12 14 16
1910 G10
0.1
V
+
= 8V V
+
= 12V V
+
≥ 24V
T
A
= 25°C
TEMPERATURE (oC)
–50
0
FAULT OUTPUT LOW VOLTAGE (V)
0.04
0.08
0.12
0.10
–25
0
25 50
1910 G012
75
0.16
0.20
0.02
0.06
0.14
0.18
125100
I
F
= 1mA
TEMPERATURE (°C)
–50
FAULT THRESHOLD VOLTAGE (V)
3.2
3.3
3.4
3.5
3.7
–25
02550
1910 G11
75 125100
3.6
3.0
3.1
V
IN
= 2V
I
F
= 1mA
FAULT HIGH THRESHOLD
FAULT LOW THRESHOLD