LT3518 LINER [Linear Technology], LT3518 Datasheet - Page 15

• 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
IN
= 10V
= 300mA
= 2MHz
3000:1 PWM Dimming at 120Hz
8V TO 16V
500ns/DIV
V
IN
C1: KEMET C0806C225K4RAC
C2: KEMET C1206C475K3RAC
C3, C4: MURATA GRM21BR71H104KA01B
C5: MURATA GRM21BR71H224KA01B
D1: ZETEX ZLLS2000TA
L1: TOKO B992AS-4R3N
LEDS: LUXEON I (WHITE)
M1: ZETEX ZXMP6A13GTA
C1
2.2μF
PWM
3518 TA04b
0.1μF
C4
Buck-Boost Mode LED Driver
PWM
TGEN
V
CTRL
SYNC
V
SHDN
REF
C
2MHz
6.04k
R
T
R
V
LT3518
IN
T
SS
4.3μH
L1
C3
0.1μF
SW
GND
ISP
ISN
TG
FB
D1
90
80
70
60
50
30
20
40
R1
3.92M
R2
124k
0
V
CTRL = V
IN
M1
= 10V
R
330mΩ
300mA
SENSE
20
REF
PWM DUTY CYCLE (%)
Effi ciency
40
C2
4.7μF
C5
0.22μF
3518 TA04a
60
80
3518 TA04c
100
LT3518
15
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