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LT3757 Datasheet(PDF) 36 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) 36 Page - Linear Technology

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LTC3787
36
3787fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
©LINEAR TECHNOLOGY CORPORATION 2010
LT 0412 REV C • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER
DESCRIPTION
COMMENTS
LTC3788/LTC3788-1
Multiphase, Dual Output Synchronous Step-Up
Controller
4.5V (Down to 2.5V After Start-Up) ≤ VIN ≤ 38V, VOUT Up to 60V, 50kHz to
900kHz Fixed Operating Frequency, 5mm × 5mm QFN-32, SSOP-28
LTC3786
Low IQ Synchronous Step-Up Controller
4.5V (Down to 2.5V After Start-Up) ≤ VIN ≤ 38V, VOUT Up to 60V, 50kHz to
900kHz Fixed Operating Frequency, 3mm × 3mm QFN-32, MSOP-16E
LTC3862/LTC3862-1
Multiphase, Dual Channel Single Output Current
Mode Step-Up DC/DC Controller
4V ≤ VIN ≤ 36V, 5V or 10V Gate Drive, 75kHz to 500kHz Fixed Operating
Frequency, SSOP-24, TSSOP-24, 5mm × 5mm QFN-24
LT3757/LT3758
Boost, Flyback, SEPIC and Inverting Controller
2.9V ≤ VIN ≤ 40V/100V, 100kHz to 1MHz Fixed Operating Frequency,
3mm × 3mm DFN-10 and MSOP-10E
LTC1871/LTC1871-1/
LTC1871-7
Wide Input Range, No RSENSE Low Quiescent Current
Flyback, Boost and SEPIC Controller
2.5V ≤ VIN ≤ 36V, 50kHz to 1MHz Fixed Operating Frequency, IQ = 250μA ,
MSOP-10
LTC3859
Low IQ, Triple Output Buck/Buck/Boost Synchronous
DC/DC Controller
All Outputs Remain in Regulation Through Cold Crank, 4.5V (Down to
2.5V After Start-Up) ≤ VIN ≤ 38V, VOUT(BUCKS) Up to 24V, VOUT(BOOST)
Up to 60V, IQ = 55μA
LTC3789
High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
4V ≤ VIN ≤ 38V, 0.8V ≤ VOUT ≤ 38V, 4mm × 5mm QFN-28 and SSOP-2
Figure 16. PolyPhase Application
TG1
BG1
0°
I1
I 1
I 2
I 3
I 4
BOOST: 24V, 5A
REFER TO FIGURE 15 FOR APPLICATION CIRCUITS
* RIPPLE CURRENT CANCELLATION INCREASES THE RIPPLE
FREQUENCY AND REDUCES THE RMS INPUT/OUTPUT RIPPLE
CURRENT, THUS SAVING INPUT/OUTPUT CAPACITORS
3787 F16
PHASMD
LTC3787
CLKOUT
CIN
12V
24V, 20A
TG2
BG2
180°
I2
BOOST: 24V, 5A
TG1
BG1
90°
90,270
+90°
I3
BOOST: 24V, 5A
PHASMD
LTC3787
CLKOUT
TG2
BG2
270°
I4
BOOST: 24V, 5A
COUT
ICOUT
IIN
I*IN
I*COUT



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