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LT3518 Datasheet(PDF) 13 Page - Linear Technology

Part # LT3518
Description  Full-Featured LED Driver with 2.3A Switch Current
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3518 Datasheet(HTML) 13 Page - Linear Technology

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LT3518
13
3518fe
TYPICAL APPLICATIONS
Buck Mode 1.5A LED Driver
1000:1 PWM Dimming at 120Hz
500mA, 5V to 12V Boost Converter with Accurate Input Current Limit
Efficiency
1.5A
D1
C3
10μF
L1
15μH
C2
2.2μF
C4
0.1μF
RSENSE
68mΩ
M1
C1
2.2μF
ISP
TGEN
GND
VREF VC
RT
16.9k
1MHz
3518 TA02a
C5
0.1μF
C1: KEMET C0805C225K4RAC
C2: MURATA GRM31MR71E225KA93
C3: MURATA GRM32DR71E106KA12B
C4, C5: MURATA GRM21BR71H104KA01B
D1: ZETEX ZLLS2000TA
L1: TOKO B992AS-150M
LEDS: LUXEON K2 (WHITE)
M1: ZETEX ZXMP6A13GTA
VIN
SHDN
CTRL
PWM
SYNC
FB
SS
RT
SW
PVIN
24V
VIN
3.3V
ISN
LT3518
TG
PWM
VREF
PWM
5V/DIV
ILED
1A/DIV
IL
1A/DIV
2μs/DIV
PVIN = 24V
fOSC = 1MHz
ILED = 1.5A
3518 TA02b
SW
VC
GND
SS
VIN
CTRL
PWM
SHDN
TGEN
VREF
FB
VOUT
12V
500mA
VIN
5V
SYNC
R1
549k
C2
10μF
C3
0.1μF
C4
10nF
SHDN
RT
ISN
LT3518
TG
ISP
D1
R2
49.9k
RT
6.04k
2MHz
R3
10k
3518 TA03a
C2
2.2μF
L1
4.3μH
RSENSE
50m
C1: KEMET C0805C225K4RAC
C2: KEMET C1206C106K4RAC
C3: MURATA GRM21BR71H104KA01B
C4: MURATA GCM033R71A103KA03
D1: ZETEX ZLLS2000TA
L1: TOKO B992AS-4R3N
ILOAD (mA)
0
70
80
400
3518 TA03b
60
50
100
200
300
500
90



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