Datasheet

LTC3803-3
5
38033fd
Start-Up I
CC
Supply Current
vs Temperature
I
TH
/RUN Shutdown Threshold
vs Temperature
I
TH
/RUN Start-Up Current Source
vs Temperature
Peak Current Sense Voltage
vs Temperature
Soft-Start Time vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C unless otherwise noted.
–60 90
0–30 30 60 150120
TEMPERATURE (°C)
0
START-UP SUPPLY CURRENT (μA)
10
20
30
40
38033 G10
50
90
60
70
80
V
CC
= V
TURNON
– 0.1V
–60 90
0–30 30 60 150120
TEMPERATURE (°C)
SHUTDOWN THRESHOLD (mV)
300
350
400
38033 G11
250
200
150
100
450
–60 90
0–30 30 60 150120
TEMPERATURE (°C)
0
I
TH
/RUN PIN CURRENT SOURCE (nA)
100
200
300
400
38033 G12
500
800
700
600
V
CC
= V
TURNON
+ 0.1V
V
ITH/RUN
= 0V
–60 90
0–30 30 60 150120
TEMPERATURE (°C)
SENSE PIN VOLTAGE (mV)
100
110
38033 G13
90
80
120
95
105
85
115
V
CC
= 8V
–60 90
0–30 30 60 150120
TEMPERATURE (°C)
SOFT-START TIME (ms)
2.0
3.0
38033 G14
1.0
0
4.0
1.5
2.5
0.5
3.5