Datasheet

LT3518
16
3518fe
TYPICAL APPLICATIONS
Boost 300mA LED Driver with LED Open Protection
3000:1 PWM Dimming at 100Hz Effi ciency
LED1
M1
LED2
LED8
D1
L1
8.2µH
R
SENSE
330mΩ
SHDN
VC GNDRT SS
R
T
16.9k
1MHz
3518 TA06a
C3
0.1µF
C2
6.8µF
C1
2.2µF
C4
0.1µF
PWM
ISP
FB
ISN
TG
TGEN
V
REF
CTRL
SYNC
300mA
V
IN
8V TO 16V
V
IN
LT3518
SW
PWM
C1: KEMET C1206C225K2RAC
C2: TDK C5750X7R1H685M
C3, C4: MURATA GRM21BR71H104KA01B
D1: ZETEX ZLLS2000TA
L1: TOKO B992AS-8R2N
LEDS: LUXEON I (WHITE)
M1: ZETEX ZXMP6A13GTA
R2
30.1k
R1
1M
PWM
5V/DIV
I
LED
200mA/DIV
I
L1
1A/DIV
1µs/DIVV
IN
= 12V
f
OSC
= 1MHz
I
LED
= 300mA
3518 TA06b
PWM DUTY CYCLE (%)
0
EFFICIENCY (%)
60
80
100
80
3518 TA06c
40
50
70
90
30
20
20
40
60
100
V
IN
= 12V
CTRL = V
REF