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LT3477 Datasheet(PDF) 20 Page - Linear Technology

Part # LT3477
Description  3A, DC/DC Converter with Dual Rail-to-Rail Current Sense
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3477 Datasheet(HTML) 20 Page - Linear Technology

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LT3477
20
3477fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2005
LT 0309 REV C • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION
COMMENTS
LT1618
Constant Current, Constant Voltage 1.4MHz,
High Efficiency Boost Regulator
VIN: 1.6V to 18V, VOUT(MAX) = 5.5V, IQ = 2.5mA, ISD < 1μA, QFN16 Package
LT3436
3A (ISW), 800kHz, 34V Step-Up DC/DC Converter VIN: 3V to 25V, VOUT(MAX) = 34V, IQ = 0.9mA, ISD < 6μA, TSSOP16E Package
LTC
®3453
Synchronous Buck-Boost High Power White
LED Driver
VIN: 2.7V to 5.5V, VOUT(MAX) = 5.5V, IQ = 2.5mA, ISD < 1μA, QFN16 Package
LT3466
Dual Constant Current, 2MHz, High Efficiency
White LED Boost Regulator With Integrated
Schottky Diode
VIN: 2.7V to 24V, VOUT(MAX) = 40V, IQ = 5mA, ISD < 16μA, DFN Package
LT3479
3A, 42V Full Featured Boost/Inverter Converter
With Soft-Start
VIN: 2.5V to 24V, VOUT(MAX) = 40V, IQ = 5mA, ISD < 1μA, DFN/TSSOP Packages
LTC3490
Single Cell 350mA, 1.3MHz LED Driver
VIN: 1V to 3.2V, VOUT(MAX) = 4.7V, ISD < 1μA, DFN/SO8 Packages
Buck Mode High Current LED Driver
Efficiency
LED CURRENT (A)
0
50
60
70
0.6
1
3477 TA05b
40
30
20
0.2
0.4
0.8
80
90
100
ISN1
ISP1
VIN
IADJ1
IADJ2
FBN
ISP2
R3
280k
R4
10k
C1
2.2μF
R1
0.1Ω
C3
3.3μF
PVIN
32V
VIN
3.3V
C4
33nF
C1: NIPPON UNITED CHEMICON NTS40X5R1H225M
C2: TAIYO YUDEN GMK316BJ105ML
C3: TAIYO YUDEN LMK316BJ475
L1: TOKO A814AY-330M
D1: DIODES INC DFLS140
CC
4.7nF
3477 TA07
R2
22k
RC
1k
SW
L1
33μH
1A
LED
STRING C2
1μF
D1
LED4
LED1
•
•
•
FBP
SS
GND
LT3477
ISN2
RT
SHDN
VC
VREF
SHDN



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