LTC3803 LINER [Linear Technology], LTC3803 Datasheet - Page 4

• Manufacturer Part Number: LTC3803
• Description: Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
• Manufacturer: LINER [Linear Technology]

LTC3803
TYPICAL PERFOR A CE CHARACTERISTICS
4
10.0
8.0
5.0
9.5
9.0
8.5
7.5
7.0
6.5
6.0
5.5
60
40
30
10
50
20
0
–50
–50
V
Thresholds vs Temperature
Start-Up I
vs Temperature
V
CC
CC
–30
–30
= V
Undervoltage Lockout
TURNON
–10
–10
TEMPERATURE ( C)
TEMPERATURE ( C)
CC
10
10
– 0.1V
Supply Current
120
115
110
105
100
V
V
95
90
85
80
TURNON
TURNOFF
–50
30
30
Peak Current Sense Voltage
vs Temperature
V
CC
–30
50
50
= 8V
–10
80
70
W
TEMPERATURE ( C)
10
90
90
3803 G07
3803 G10
U
110
110
30
50
70
10.0
100
450
400
300
250
200
350
150
9.9
9.8
9.7
9.6
9.5
9.4
9.3
9.2
9.0
9.1
–50
–50
90
V
vs Temperature
I
vs Temperature
3803 G13
TH
CC
/RUN Shutdown Threshold
–30
–30
110
Shunt Regulator Voltage
–10
–10
I
TEMPERATURE ( C)
TEMPERATURE ( C)
CC
10
10
= 25mA
30
30
I
CC
= 1mA
50
50
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
70
70
0
–50
Soft-Start Time vs Temperature
90
90
–30
3803 G08
3803 G11
110
110
–10
TEMPERATURE ( C)
10
245
265
260
255
250
240
235
230
225
220
215
600
400
300
100
500
200
30
0
–50
–50
I
vs Temperature
I
vs Temperature
CC
V
V
50
TH
V
V
CC
ITH/RUN
CC
ITH/RUN
–30
/RUN Start-Up Current Source
–30
Supply Current
= V
= 8V
70
TURNON
–10
–10
= 0V
= 1.3V
90
TEMPERATURE ( C)
TEMPERATURE ( C)
3803 G14
10
10
+ 0.1V
110
30
30
50
50
70
70
90
90
3803 G08
3803 G12
3803i
110
110