LT3837EFE-PBF LINER [Linear Technology], LT3837EFE-PBF Datasheet - Page 5

• Manufacturer Part Number: LT3837EFE-PBF
• Description: Isolated No-Opto Synchronous Flyback Controller
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFORMANCE CHARACTERISTICS
1.220
1.250
1.245
1.240
1.235
1.230
1.225
40
70
65
60
55
50
45
24
23
22
21
20
19
18
17
16
–50
–50
–50
Feedback Amplifi er Source and
Sink Current vs Temperature
UVLO vs Temperature
Soft-Start Charge Current
vs Temperature
–25
–25
–25
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
SOURCE CURRENT
25
25
25
50
50
50
V
FB
= 1.1V
75
75
75
V
CURRENT
FB
SINK
100
100
100
= 1.4V
3837 G11
3837 G16
3837 G14
125
125
125
1100
1050
1000
950
900
3.7
3.4
3.0
3.6
3.5
3.3
3.2
3.1
80
70
60
50
40
30
20
10
0
–50
–50
0
Feedback Amplifi er g
vs Temperature
I
PG, SG Rise and Fall Times
vs Load Capacitance
T
UVLO
A
= 25°C
–25
1
–25
Hysteresis vs Temperature
2
0
0
TEMPERATURE (°C)
3
TEMPERATURE (°C)
CAPACITANCE (nF)
FALL TIME
4
25
25
5
50
50
6
m
RISE TIME
75
7
75
8
100
100
3837 G15
3837 G17
9
3837 G12
125
125
10
1700
1650
1600
1550
1500
1450
1400
1350
1300
1250
1200
1150
1100
0.90
0.85
0.80
0.75
0.60
0.55
0.50
0.45
0.40
20.5
19.0
0.70
0.65
21.5
21.0
20.0
19.5
–50
–50
–50 –25
Feedback Amplifi er Voltage Gain
vs Temperature
UVLO Shutdown Threshold
vs Temperature
Minimum On-Time
vs Temperature
I
CC
–25
–25
= 10mA
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
V
CC
50
50
50
= 14V
LT3837
75
75
75
100
100
100
3837 G15a
3837 G13
3837 G18
3837fa
5
125
125
125