LT3519 LINER [Linear Technology], LT3519 Datasheet - Page 12

• Manufacturer Part Number: LT3519
• Description: LED Driver with Integrated Schottky Diode
• Manufacturer: LINER [Linear Technology]

LT3519
TYPICAL APPLICATIONS
12
0.1A/DIV
0.3A/DIV
5V/DIV
PWM
I
LED
I
L
V
IN
= 12V
1000:1 PWM Dimming at 120Hz
2μs/DIV
6V TO 30V
V
IN
C1
1μF
C1: TDK C3216X7R1H105K
C2: MURATA GRM32ER71H475KA88
L1: COILTRONICS DR74-680-R
M1: VISHAY SILICONIX Si2328DS
R
NOTE:
V
V
V
V
IN
IN
IN
OUT
SENSE
= 8.2V RISING TURN ON
= 6.2V FALLING UVLO
> 10V FULL LED CURRENT AND FOLDBACK BELOW
3519 TA02b
100k
42.7V OVERVOLTAGE PROTECTION
: STACKPOLE ELECTRONICS RHC 2512 2.49
4W Boost Automotive LED Driver
1M
137k
1M
243k
68μH
L1
SW
V
SHDN/UVLO
V
CTRL
OPENLED
IN
REF
GND
ANODE
LT3519
CATHODE
PWM
PWM
ISN
ISP
FB
94
92
90
88
86
84
6
5V
1M
29.4k
10
V
Effi ciency vs V
R
2.5Ω
M1
3519 TA02a
OUT
SENSE
14
38V LED
100mA
C2
4.7μF
V
IN
18
(V)
22
IN
26
3519 TA02c
30
3519f