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