lt3837 Linear Technology Corporation, lt3837 Datasheet - Page 4

• Manufacturer Part Number: lt3837
• Description: Isolated No-opto Synchronous Flyback Controller
• Manufacturer: Linear Technology Corporation

LT3837
TYPICAL PERFORMANCE CHARACTERISTICS
4
300
250
220
215
210
205
200
195
190
185
180
200
150
100
50
90
80
70
60
50
40
30
20
10
0
0
–50
–50
–50
V
vs Temperature
SENSE Fault Voltage
vs Temperature
Feedback Pin Input Bias
vs Temperature
SENSE = V
WITH V
CC
–25
–25
–25
Shutdown Current
SENSE
SENSE
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
–
= 0V
+
25
25
25
V
CC
= 14V
50
50
50
75
75
75
V
UVLO
100
100
100
3837 G05
3837 G08
3837 G02
= 0
125
125
125
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
110
108
106
104
102
100
10
98
96
94
92
90
9
8
7
6
5
3
4
–50
–50
–50
V
Oscillator Frequency
vs Temperature
V
V
C
CC
FB
CC
OSC
–25
–25
–25
Current vs Temperature
STATIC PART CURRENT
= 14V
Reset vs Temperature
= 100pF
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
DYNAMIC CURRENT C
C
SG
25
25
25
= 1nF , f
50
50
50
OSC
= 100kHz
75
75
75
100
100
100
PG
3837 G09
3837 G06
3837 G03
125
125
125
1.240
1.239
1.238
1.237
1.236
1.235
1.234
1.233
1.232
1.231
1.230
–10
–30
–70
110
108
106
104
102
100
–50
10
70
50
30
98
96
94
92
90
–50
–50
0.9
SENSE Voltage vs Temperature
V
Feedback Amplifi er Output
Current vs V
FB = 1.1V
SENSE = V
WITH V
FB
–25
–25
vs Temperature
1
SENSE
SENSE
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
1.1
–
= 0V
FB
+
25
25
V
FB
1.2
(V)
50
50
125°C
1.3
75
75
–40°C
1.4
100
100
25°C
3837 G04
3837 G07
3837 G10
3837fa
125
125
1.5