LTC3805-5_15 Datasheet, PDF (6/20 Pages) Linear Technology – Adjustable Frequency Current Mode Flyback/ Boost/SEPIC DC/DC Controller

LTC3805-5
TYPICAL PERFORMANCE CHARACTERISTICS
Start-Up I_CC Supply Current
vs Temperature
50
48
46
44
42
40
38
36
34
32
30
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G09
I_CC Supply Current
vs Temperature
360
350
340
330
320
310
300
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G10
V_CC Shunt Regulator Voltage
vs Temperature
9.60
9.55
V_CLAMP25mA
9.50
9.45
9.40
9.35
9.30
V_CLAMP1mA
9.25
9.20
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G11
Peak Current Sense Voltage
vs Temperature
100.8
100.6
100.4
100.2
100.0
99.8
99.6
99.4
99.2
99.0
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G12
Overcurrent Threshold
vs Temperature
104
102
100
98
96
94
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G13
Internal Soft-Start Time
vs Temperature
2.20
2.15
2.10
2.05
2.00
1.95
1.90
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G14
External Soft-Start Current
vs Temperature
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
4.4
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G15
External Timeout Current
vs Temperature
2.1
2.0
1.9
1.8
1.7
1.6
1.5
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
38055 G16
38055fe
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