Datasheet

4
LT1641-1/LT1641-2
164112fc
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TEMPERATURE (°C)
–50 –25 0 25 50 75 100
GATE DRIVE (V
GATE
– V
CC
) (V)
1641-1 G07
16
15
14
13
12
11
10
9
8
7
6
V
CC
= 48V
V
CC
= 10.8V
V
CC
(V)
0
20 40 60 80
GATE DRIVE (V
GATE
– V
CC
) (V)
1641-1 G08
16
14
12
10
8
6
T
A
= 25°C
TEMPERATURE (°C)
–50 –25 0 25 50 75 100
TIMER PIN PULL UP CURRENT (µA)
1641-1 G09
–40
–50
–60
–70
–80
–90
–100
–110
V
CC
= 48V
V
CC
(V)
10
30 50 70 90
TIMER PIN PULL UP CURRENT (µA)
1641-1 G10
16
14
12
10
8
6
T
A
= –45°C
T
A
= 0°C
T
A
= 25°C
T
A
= 85°C
TEMPERATURE (°C)
–50 –25 0 25 50 75 100
ON PIN HIGH VOLTAGE THRESHOLD (V)
1641-1 G11
1.335
1.330
1.325
1.320
1.315
1.310
1.305
1.300
1.295
1.290
1.285
V
CC
= 48V
TEMPERATURE (°C)
–50 –25 0 25 50 75 100
ON PIN LOW VOLTAGE THRESHOLD (V)
1641-1 G12
1.239
1.237
1.235
1.233
1.231
1.229
1.227
1.225
1.223
V
CC
= 48V
TEMPERATURE (°C)
–50 –25 0 25 50 75 100
ON PIN LOW VOLTAGE HYSTERESIS (V)
1641-1 G13
0.100
0.090
0.080
0.070
0.060
0.050
V
CC
= 48V
I
LOAD
(mA)
10
30 50 70 90
PWRGD V
OUT
LOW (V)
1641-1 G14
20
18
16
14
12
10
8
6
4
2
0
T
A
= –45°C
V
CC
= 48V
T
A
= 85°C
T
A
= 25°C
V
FEEDBACK
(V)
0
0.2 0.4 0.6 0.8 1
SENSE PIN REGULATION VOLTAGE (mV)
1641-1 G15
50
45
40
35
30
25
20
15
10
5
0
V
CC
= 48V
T
A
= 25°C
Gate Drive vs Temperature Gate Drive vs V
CC
TIMER Pin Pull Up Current vs
Temperature
TIMER Pin Pull Up Current vs V
CC
ON Pin High Voltage Threshold vs
Temperature
ON Pin Low Voltage Threshold vs
Temperature
ON Pin Voltage Hysteresis vs
Temperature PWRGD V
OUT
Low vs I
LOAD
SENSE Pin Regulation Voltage vs
V
FEEDBACK