LT3519 LINER [Linear Technology], LT3519 Datasheet - Page 16

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

LT3519
TYPICAL APPLICATIONS
RELATED PARTS
PART NUMBER
LT1618
LT3466/LT3466-1 Dual Full Function, 2MHz Diodes White LED Step-Up
LT3486
LT3491
LT3497
LT3517
LT3518
LT3591
ThinSOT is a trademark of Linear Technology Corporation.
16
I
LED_SHORTED
I
0.2A/DIV
0.1A/DIV
0.5A/DIV
L1A
+I
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
I
L1B
LED
Waveforms for LED Shorted to Ground
4V TO 24V
V
IN
DESCRIPTION
Constant-Current, Constant-Voltage 1.24MHz, High
Effi ciency Boost Regulator
Converter with Built-In Schottkys
Dual 1.3A White LED Converter with 1000:1 True Color
PWM Dimming
2.3MHz White LED Driver with Integrated Schottky Diode Drives Up to 6 LEDs. V
Dual Full Function 2.3MHz LED Driver with 250:1 True
Color PWM Dimming with Integrated Schottky Diodes
Full-Featured LED Driver with 1.5A Switch Current
Full-Featured LED Driver with 2.3A Switch Current
Constant-Current, 1MHz, High Effi ciency White LED
Step-Up Converter with Built-in Schottkys
= 12V
V
IN
●
FAX: [phone]
C1
1μF
50μs/DIV
100k
1M
158k
1M
432k
68μH
L1A
●
•
www.linear.com
SW
V
SHDN/UVLO
V
CTRL
OPENLED
3519 TA05b
IN
REF
2.2μF
GND
C3
ANODE
LT3519
•
SEPIC 150mA LED Driver
68μH
CATHODE
L1B
PWM
PWM
ISP
ISN
FB
5V
69.8k
1M
Up to 16 White LEDs, V
I
Up to 20 White LEDs, V
Packages
Drives Up to 16 100mA White LEDs. V
DFN/TSSOP Packages
Packages
Drives Up to 12 LEDs. V
DFN Package
V
I
V
I
Up to 10 White LEDs, V
Package
COMMENTS
SD
SD
SD
IN
IN
: 3V to 40V, V
: 3V to 40V, V
< 1μA, MS Package
< 1μA, 4mm × 4mm QFN and TSSOP Packages
< 1μA, 4mm × 4mm QFN and TSSOP Packages
M1
R
1.67Ω
3519 TA05a
SENSE
V
16V LED
150mA
OUT
C2
4.7μF
OUT(MAX)
OUT(MAX)
C1: TDK C3216X7R1H105K
C2: TDK C3216X7R1E475K
C3: TDK C3216X7R1E225K
L1: COILTRONICS DRQ74-680-R (COUPLED INDUCTOR)
M1: VISHAY SILICONIX Si2328DS
NOTE:
V
V
V
V
88
86
84
82
80
78
76
74
IN
IN
IN
OUT
4
= 6V RISING TURN ON
= 4V FALLING UVLO
> 9V FULL LED CURRENT AND FOLDBACK BELOW
18.5V OVERVOLTAGE PROTECTION
IN
IN
IN
IN
IN
: 2.5V to 12V, V
: 1.6V to 18V, V
: 2.7V to 24V, V
: 2.5V to 12V, V
: 2.5V to 10V, V
= 45V, Dimming = 5.000:1 True Color PWM,
= 45V, Dimming = 3.000:1 True Color PWM,
8
Effi ciency vs V
12
V
IN
© LINEAR TECHNOLOGY CORPORATION 2009
IN
(V)
OUT(MAX)
: 2.5V to 24V, V
OUT(MAX)
OUT(MAX)
OUT(MAX)
16
OUT(MAX)
IN
20
= 27V, SC70/DFN
= 34V, I
= 39V, DFN/TSSOP-16
= 45V, 3mm × 2mm DFN
= 32V, 3mm × 2mm
3519 TA05c
LT 0809 • PRINTED IN USA
24
OUT(MAX)
Q
= 1.8mA,
= 36V,
3519f