LT3651 Просмотр технического описания (PDF) - Linear Technology
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LT3651 Datasheet PDF : 22 Pages
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LT3651-4.1/LT3651-4.2
TYPICAL PERFORMANCE CHARACTERISTICS
C/10 Threshold (VSENSE –VBAT)
vs Temperature
11
10
Top Side Switch VON
vs Temperature
700
ISW = 4A
650
600
Bottom Side VON vs Temperature
–50
ISW = 4A
–100
9
550
–150
500
8
–200
450
7
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
365142 G10
400
–50 –25
0 25 50 75
TEMPERATURE (˚C)
100 125
365142 G11
–250
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
365142 G12
Switch Drive (IBST/ISW)
vs Temperature
35
ISW = 4A
30
25
20
Boost Drive vs Boost Voltage
60
ISW = 4A
50
40
30
20
Boost Switch Drive
vs Switch Current
70
60
50
40
30
20
15
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
365142 G13
10
2.5 3.5 4.5 5.5 6.5 7.5
VBST – VIN (V)
365142 G14
10
0
1
2
3
ISW (A)
Oscillator Frequency
vs Temperature
1.0
RT = 54.9k
0.5
0
–0.5
–1.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
365142 G16
Timer Resistor (RT)
vs Period and Frequency
400
350
300
250
200
150
100
50
1
1000
2
3
4
5
6
500 333 250 200 167
PERIOD (µs)
FREQUENCY (kHz)
365142 G17
6
For more information www.linear.com/LT3651-4.1
4
5
365142 G15
365142ff
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