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LT3757 Datasheet(PDF) 8 Page - Linear Technology

Part # LT3757
Description  PolyPhase Synchronous Boost Controller
PDF  36 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3757 Datasheet(HTML) 8 Page - Linear Technology

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background image
LTC3787
8
3787fc
SENSE Pin Input Current
vs Temperature
Oscillator Frequency
vs Temperature
Maximum Current Sense
Threshold vs ITH Voltage
SENSE Pin Input Current
vs VSENSE Voltage
SENSE Pin Input Current
vs ITH Voltage
Oscillator Frequency
vs Input Voltage
TYPICAL PERFORMANCE CHARACTERISTICS
15
510
20
25
30
35
40
INPUT VOLTAGE (V)
344
354
356
358
360
350
342
352
340
348
346
3787 G20
FREQ = GND
ITH VOLTAGE (V)
0
80
120
100
0.6
1.0
3787 G21
40
0
0.2
0.4
0.8
1.2
1.4
–40
60
20
–20
–60
ILIM = GND
ILIM = FLOAT
ILIM = INTVCC
Burst Mode
OPERATION
PULSE-SKIPPING MODE
FORCED CONTINUOUS MODE
ITH VOLTAGE (V)
0
1
2
2.5
0
80
40
160
200
240
120
20
100
60
180
220
260
140
0.5
1.5
3
3787 G23
SENSE+ PIN
SENSE – PIN
VSENSE = 12V
ILIM = INTVCC
ILIM = FLOAT
ILIM = GND
ILIM = INTVCC
ILIM = FLOAT
ILIM = GND
VSENSE COMMON MODE VOLTAGE (V)
2.5
17.5
27.5
32.5
0
80
40
160
200
240
120
20
100
60
180
220
260
140
7.5
12.5
22.5
37.5
3787 G24
SENSE+ PIN
SENSE – PIN
ILIM = INTVCC
ILIM = FLOAT
ILIM = GND
ILIM = INTVCC
ILIM = FLOAT
ILIM = GND
TEMPERATURE (°C)
300
350
600
450
500
550
400
3787 G19
–60
15
–35 –10
40
65
90
140
115
FREQ = INTVCC
FREQ = GND
TEMPERATURE (°C)
0
80
40
160
200
240
120
20
100
60
180
220
260
140
3787 G22
–60
15
–35 –10
40
65
90
140
115
SENSE – PIN
SENSE+ PIN
VSENSE = 12V
ILIM = FLOAT



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