LT3518EUF View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT3518EUF' PDF : 20 Pages View PDF
LT3518
TYPICAL APPLICATIONS
Boost 300mA LED Driver with LED Open Protection
VIN
8V TO 16V
PWM
C1
2.2μF
L1
8.2μH
D1
SHDN VIN
SW
FB
R1
1M
R2
30.1k
PWM
ISP
LT3518
TGEN
VREF
ISN
CTRL
TG
SYNC
VC RT SS GND
C4
0.1μF
RT
16.9k
1MHz
C3
0.1μF
RSENSE
330mΩ
300mA
M1
LED1
LED2
LED8
3518 TA06a
C2
6.8μF
C1: KEMET C1206C225K2RAC
C2: TDK C5750X7R1H685M
C3, C4: MURATA GRM21BR71H104KA01B
D1: ZETEX ZLLS2000TA
L1: TOKO B992AS-8R2N
LEDS: LUXEON I (WHITE)
M1: ZETEX ZXMP6A13GTA
PWM
5V/DIV
ILED
200mA/DIV
3000:1 PWM Dimming at 100Hz
IL1
1A/DIV
VIN = 12V
fOSC = 1MHz
ILED = 300mA
1μs/DIV
3518 TA06b
100
90
80
70
60
50
40
30
20
0
Efficiency
VIN = 12V
CTRL = VREF
20
40
60
80 100
PWM DUTY CYCLE (%)
3518 TA06c
3518fe
16
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