LT3518 LINER [Linear Technology], LT3518 Datasheet - Page 17

• Manufacturer Part Number: LT3518
• Description: Full-Featured LED Driver with 2.3A Switch Current
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIONS
200mA/DIV
5V/DIV
1A/DIV
PWM
I
LED
I
L1
V
f
I
OSC
LED
8V TO 16V
IN
= 12V
= 300mA
= 1MHz
3000:1 PWM Dimming at 100Hz
V
IN
C1
2.2μF
PWM
1μs/DIV
0.1μF
C4
Boost 300mA LED Driver with LED Open Protection
PWM
TGEN
V
CTRL
SYNC
V
REF
SHDN
C
1MHz
16.9k
R
T
3518 TA06b
V
R
LT3518
IN
T
SS
8.2μH
L1
C3
0.1μF
SW
GND
ISN
ISP
TG
FB
D1
300mA
R1
1M
R2
30.1k
M1
R
330mΩ
SENSE
100
LED1
LED2
LED8
3518 TA06a
90
80
70
60
50
40
30
20
0
C1: KEMET C1206C225K2RAC
C2: TDK C5750X7R1H685M
C3, C4: MURATA GRM21BR71H104KA01B
D1: ZETEX ZLLS2000TA
L1: TOKO B992AS-8R2N
LEDS: LUXEON I (WHITE)
M1: ZETEX ZXMP6A13GTA
C2
6.8μF
20
PWM DUTY CYCLE (%)
Effi ciency
40
60
V
CTRL = V
IN
80
= 12V
3518 TA06c
REF
100
LT3518
17
3518fb