LTC3803-3 Datasheet, PDF (5/16 Pages) Linear Technology – Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT

LTC3803-3
TYPICAL PERFOR A CE CHARACTERISTICS T_A = 25°C unless otherwise noted.
Start-Up I_CC Supply Current
vs Temperature
70
V_CC = V_TURNON – 0.1V
60
50
40
30
20
10
0
–50 –30 –10 10 30 50 70 90 110 130
TEMPERATURE (°C)
38033 G10
I_TH/RUN Shutdown Threshold
vs Temperature
450
400
350
300
250
200
150
100
–50 –30 –10 10 30 50 70 90 110 130
TEMPERATURE (°C)
38033 G11
I_TH/RUN Start-Up Current Source
vs Temperature
700
V_CC = V_TURNON + 0.1V
600 ^{VITH/RUN = 0V}
500
400
300
200
100
0
–50 –30 –10 10 30 50 70 90 110 130
TEMPERATURE (°C)
38033 G12
Peak Current Sense Voltage
vs Temperature
120 _{VCC = 8V}
115
110
105
100
95
90
85
80
–50 –30 –10 10 30 50 70 90 110 130
TEMPERATURE (°C)
38033 G13
Soft-Start Time vs Temperature
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–50 –30 –10 10 30 50 70 90 110 130 150
TEMPERATURE (°C)
38033 G14
38033fa
5