LT1768I View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT1768I Datasheet PDF : 20 Pages
| |||
LT1768
TYPICAL PERFOR A CE CHARACTERISTICS
VC Clamp Voltage vs Temperature
3.90
3.85 IVC = 500µA
3.80
3.75
3.70
3.65
3.60
3.55
3.50
3.45
3.40
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1768 G26
PWM Pin Input Current vs
Temperature
1.40
1.30
VPWM = 2.5V
1.20
1.10
1.00
0.90
0.80
0.70
0.60
0.50
0.40
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1768 G29
IDIO1/2 to IRMAX Ratio vs RMAX
Current
110
VPROG = 4.5V
108 VVC = 2.5V
106
104
102
100
98
96
94
92
90
0
–60 –120 –180 –240 –300
IRMAX (µA)
1768 G33
VC Switching Threshold
vs Temperature
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1768 G27
Lamp Fault Current Threshold
vs Temperature
200
180
160
140
120
100
80
60
40
20
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1768 G31
IDIO1/2 to IRMAX Ratio vs RMAX
Current with a Lamp Fault
60
58
VPROG = 4.5V
VVC = 2.5V
56 IDI01 OR IDI02 = 0µA
54
52
50
48
46
44
42
40
0
–60 –120 –180
IRMAX (µA)
–240 –300
1768 G34
PWM Pin Input Current
vs Voltage
25
20
15
10
5
0
0
1
2
3
4
5
PWM VOLTAGE (V)
1768 G28
Maximum Sense Threshold
vs Gate Drive Duty Cycle
120
110
100
90
80
70
60
50
40
30
20
0 10 20 30 40 50 60 70 80 90 100
GATE DUTY CYCLE (%)
1768 G32
IDIO1/2 to IRMIN Ratio vs RMIN
Current
11.0
10.8
VPROG = 0.75V
VVC = 2.5V
10.6
10.4
10.2
10.0
9.8
9.6
9.4
9.2
9.0
0
–60 –120 –180
IRMIN (µA)
–240 –300
1768 G35
6
Share Link: 