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LTC3788-1 Datasheet(PDF) 8 Page - Linear Technology

Part # LTC3788-1
Description  2-Phase, Dual Output Synchronous Boost Controller
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3788-1 Datasheet(HTML) 8 Page - Linear Technology

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LTC3788-1
8
37881f
TEMPERATURE (°C)
–45
5
55
80
0
80
40
160
200
240
120
20
100
60
180
220
260
140
–20
30
105
130
37881 G22
SENSE+ PIN
SENSE – PIN
VSENSE = 12V
SENSE Pin Input Current
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
37881 G20
FREQ = GND
ITH VOLTAGE (V)
0
80
120
100
0.6
1.0
37881 G21
40
0
0.2
0.4
0.8
1.2
1.4
–40
60
20
–20
–60
PULSE-SKIPPING MODE
FORCED CONTINUOUS MODE
Burst Mode OPERATION
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
37881 G23
SENSE+ PIN
SENSE – PIN
VSENSE = 12V
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
37881 G24
SENSE+ PIN
SENSE – PIN
DUTY CYCLE (%)
0
80
100
70
60
40
20
40
10
90
30
50
80
60
100
20
0
120
37881 G25
OPERATING FREQUENCY (kHz)
50
0
20
30
80
50
250
450
550
10
60
70
40
150
350
650
750
37881 G26
T = 130°C
T = 25°C
T = – 45°C
VSW = 12V
VBOOST – VSW = 4.5V
Maximum Current Sense
Threshold vs Duty Cycle
Charge Pump Charging Current
vs Operating Frequency


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