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LT3477 Datasheet(PDF) 16 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) 16 Page - Linear Technology

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LT3477
16
3477fc
TYPICAL APPLICATIONS
87% Efficient, 4W LED Driver
ISN1
ISP1
VIN
IADJ1
IADJ2
FBN
ISP2
R2
200k
C2
3.3μF
C1
3.3μF
VIN
5V
C3
33nF
C1: TAIYO YUDEN LMK316BJ335ML
C2: TAIYO YUDEN TMK325BJ335MN
D1: DIODES INC. DFLS120L
L1: TOKO A915AY-100M
330mA
LED1
LED2
LED3
LED4
3477 TA03a
R1
10k
R3
22k
R6
0.3Ω
SW
L2
10μH
R4
0.05Ω
D1
FBP
SS
GND
LT3477
ISN2
RT
SHDN
VC
VREF
SHDN
CC
4.7nF
RC
1k
Efficiency
1A Buck Mode High Current LED Driver
Efficiency
IOUT (A)
0
70
75
80
0.4
3477 TA01b
65
60
50
0.1
0.2
0.3
55
90
85
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
3477 TA05a
R2
22k
SW
L1
33μH
1A
LED
STRING C2
1μF
D1
LED4
LED1
•
•
•
FBP
SS
GND
LT3477
ISN2
RT
SHDN
VC
VREF
SHDN
CC
4.7nF
RC
1k
LED CURRENT (A)
0
50
60
70
0.6
1
3477 TA05b
40
30
20
0.2
0.4
0.8
80
90
100



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