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LT3757 Datasheet(PDF) 36 Page - Linear Technology

Part # LT3757
Description  Boost, Flyback, SEPIC and Inverting 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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LT3757

3757fb
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900●FAX:(408)434-0507●www.linear.com
LINEAR TECHNOLOGY CORPORATION 2008
LT 0310 REV B • PRINTED IN USA
relaTeD parTs
Typical applicaTion
PART NUMBER
DESCRIPTION
COMMENTS
LT3758
Boost,Flyback,SEPICandInvertingController
2.9V≤VIN≤100V,CurrentModeControl,100kHzto1MHzProgrammable
OperationFrequency,3mm
×3mm10-LeadDFNand10-LeadMSOP-E
Packages
LT3573
IsolatedFlybackSwitchingRegulatorwith60V
IntegratedSwitch
3V≤VIN≤40V,NoOpto-IsolatororThirdWindingRequired,Upto7W,
16-LeadMSOP-EPackage
LTC1871/LTC1871-1/
LTC1871-7
Boost,FlybackandSEPICController,NoRSENSE™,
LowQuiescentCurrent
AdjustableSwitchingFrequency,2.5V≤VIN≤36V,BurstMode®Operationat
LightLoads
LTC3872
Boost,Flyback,SEPICController
2.75V≤VIN≤9.8V,23-LeadThinSot™and2mm×3mm8-LeadDFN
Packages
LT3837
IsolatedNo-OptoSynchronousFlybackController
IdealforVINfrom4.5Vto36VLimitedbyExternalComponents,Upto60W,
CurrentModeControl
LT3825
IsolatedNo-OptoSynchronousFlybackController
VIN16Vto75VLimitedbyExternalComponents,Upto60W,CurrentMode
Control
LTC3803/LTC3803-3/
LTC3803-5
200kHzFlybackDC/DCController
VINandVOUTLimitedOnlybyExternalComponents,6-LeadThinSotPackage
LTC3805/LTC3805-5
AdjustableFixed70kHzto700kHzOperating
FrequencyFlybackController
VINandVOUTLimitedOnlybyExternalComponents,3mm×3mm10-Lead
DFN,10-LeadMSOP-EPackages
High Efficiency Inverting Power Supply
Efficiency vs Output Current
OUTPUT CURRENT (A)
0.001
10
20
30
40
50
60
70
80
90
100
0.01
0.1
1
3757 TA08b
10
VIN = 16V
VIN = 5V
SENSE
LT3757
VIN
VIN
5V TO
15V
CIN
47µF
16V
X5R
CDC
47µF
25V, X5R
VOUT
–5V
3A to 5A
0.006
1W
M1
Si7848BDP
41.2k
300kHz
GATE
FBX
GND
INTVCC
SHDN/UVLO
SYNC
RT
SS
VC
•
R2
105k
R1
46.4k
0.1µF
9.1k
10nF
L1
L2
D1
MBRD835L
L1, L2: COILTRONICS DRQ127-3R3 (*COUPLED INDUCTORS)
3757 TA08a
84.5k
16k
CVCC
4.7µF
10V
X5R
COUT
100µF
6.3V, X5R
2



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