LTC3803-5 Datasheet, PDF (5/12 Pages) Linear Technology – Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT

TYPICAL PERFOR A CE CHARACTERISTICS
LTC3803-5
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 90 110 130 150
TEMPERATURE (°C)
38035 G10
I_TH/RUN Shutdown Threshold
vs Temperature
500
450
400
350
300
250
200
150
100
50
0
–50 –30 –10 10 30 50 70 90 110 130 150
TEMPERATURE (°C)
3803 G11
I_TH/RUN Start-Up Current Source
vs Temperature
1000
V_CC = V_TURNON + 0.1V
900 V_ITH/RUN = 0V
800
700
600
500
400
300
200
100
0
–50 –30 –10 10 30 50 70 90 110 130 150
TEMPERATURE (°C)
38035 G12
Peak Current Sense Voltage
vs Temperature
120 _{VCC = 5V}
115
110
105
100
95
90
85
80
–50 –30 –10 10 30 50 70 90 110 130 150
TEMPERATURE (°C)
38035 G13
Soft-Start Time vs Temperature
1.4
V_CC = 5V
1.2
1.0
0.8
0.6
0.4
0.2
0
–50 –30 –10 10 30 50 70 90 110 130 150
TEMPERATURE (°C)
38035 G14
38035f
5