LT3837_15 Datasheet, PDF (4/28 Pages) Linear Technology – Isolated No-Opto Synchronous Flyback Controller

LT3837
TYPICAL PERFORMANCE CHARACTERISTICS
V_CC Shutdown Current
vs Temperature
90
80
V_UVLO = 0
70
60
V_CC = 14V
50
40
30
20
10
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3837 G01
SENSE Fault Voltage
vs Temperature
220
215
WSEINTHSEV=_SE^V_{NSSEEN–S}=^E+0V
210
205
200
195
190
185
180
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3837 G04
Feedback Pin Input Bias
vs Temperature
300
250
200
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3837 G07
4
V_CC Current vs Temperature
10
9
DYNAMIC CURRENT C_PG
C_SG = 1nF, f_OSC = 100kHz
8
7
6
STATIC PART CURRENT
5
4
V_CC = 14V
3
–50 –25 0 25 50 75
TEMPERATURE (°C)
100 125
3837 G02
Oscillator Frequency
vs Temperature
110
108 ^{COSC = 100pF}
106
104
102
100
98
96
94
92
90
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3837 G05
V_FB Reset vs Temperature
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3837 G08
SENSE Voltage vs Temperature
110
FB = 1.1V
108
106
WSEINTHSEV=_SE^V_{NSSEEN–S}=^E+0V
104
102
100
98
96
94
92
90
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3837 G03
V_FB vs Temperature
1.240
1.239
1.238
1.237
1.236
1.235
1.234
1.233
1.232
1.231
1.230
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3837 G06
Feedback Amplifier Output
Current vs V_FB
70
125°C
50
25°C
–40°C
30
10
–10
–30
–50
–70
0.9 1 1.1 1.2 1.3 1.4 1.5
V_FB (V)
3837 G09
3837fd