lt3517 Linear Technology Corporation, lt3517 Datasheet - Page 16

• Manufacturer Part Number: lt3517
• Description: Full-featured Led Driver With 1.5a Switch Current
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIONS
LT3517
16
100mA/DIV
500mA/DIV
5V/DIV
PWM
I
LED
I
L
V
f
I
OSC
LED
IN
8V TO 16V
= 12V
= 100mA
= 1MHz
3000:1 PWM Dimming at 100Hz
V
IN
C1
2.2μF
1μs/DIV
PWM
0.1μF
C4
Boost 100mA LED Driver with LED Open Protection
PWM
TGEN
V
CTRL
SYNC
V
REF
SHDN
C
1MHz
16.9k
R
3517 TA06b
T
V
R
LT3517
IN
T
SS
22μH
L1
C3
0.1μF
SW
GND
ISN
ISP
TG
FB
D1
100mA
R1
1M
R2
30.1k
M1
R
1Ω
SENSE
LED1
LED2
LED10
3517 TA06a
90
80
70
60
50
40
30
20
0
V
CTRL = V
IN
C1, C2: KEMET C1206C225K2RAC
C3, C4: MURATA GRM21BR71H104KA01B
D1: DIODES DFLS160
L1: COILCRAFT DS3316P-223
LEDS: CREE XLAMP 7090
M1: ZETEX ZXMP6A13FTA
C2
2.2μF
= 12V
20
REF
PWM DUTY CYCLE (%)
Effi ciency
40
60
80
3517 TA06c
100
3517f