LT3598
24
3598fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2008
LT 0710 REV B • PRINTED IN USA
L1, 10μH
D1
C2
4.7μF
3598 TA04a
LT3598
V
O_SW
FB
OPENLED
PWM
SHDN
SYNC
LED1
LED2
LED3
LED4
LED5
LED6
V
OUT
SWV
IN
PWM
SHDN
SYNC
100k
PV
IN
8V TO 40V
C3
2.2μF
V
IN
5V
20mA
R4
1.00M
R5
30.9k
R3
14.7k
R7
100k
R
HOT
10k
C1
2.2μF
RT
CTRL
V
REF
V
C
SS GND
T
SET
I
SET
C5
47pF
R1
51.1k
C4
10nF
R
NTC
100k
R
C
2.61k
C
C
15nF
R8
60.4k
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT3474/
LT3474-1
36V, 1A (I
LED
), 2MHz, Step-Down LED Driver V
IN
: 4V to 36V, V
OUT(MAX)
= 13.5V, True Color PWM Dimming = 400:1,
I
SD
< 1μA, TSSOP-16E Package
LT3475/
LT3475-1
Dual 1.5A (I
LED
), 36V, 2MHz, Step-Down LED Driver V
IN
: 4V to 36V, V
OUT(MAX)
= 13.5V, True Color PWM Dimming = 3000:1,
I
SD
< 1μA, TSSOP-20E Package
LT3476 Quad Output 1.5A, 2MHz High Current LED Driver with
1000:1 Dimming
V
IN
: 2.8V to 16V, V
OUT(MAX)
= 36V, True Color PWM Dimming = 1000:1,
I
SD
< 10μA, 5mm × 7mm QFN-10 Package
LT3477 3A, 42V, 3MHz Boost, Buck-Boost, Buck LED Driver V
IN
: 2.5V to 25V, V
OUT(MAX)
= 40V, Dimming = Analog/PWM, I
SD
< 1μA,
QFN and TSSOP20E Packages
LT3478/LT3478-1 4.5A, 42V, 2.5MHz High Current LED Driver with 3000:1
Dimming
V
IN
: 2.8V to 36V, V
OUT(MAX)
= 42V, True Color PWM Dimming = 3000:1,
I
SD
< 3μA, TSSOP16E Package
LT3486 Dual 1.3A, 2MHz High Current LED Driver V
IN
: 2.5V to 24V, V
OUT(MAX)
= 36V, True Color PWM Dimming = 1000:1,
I
SD
< 1μA, 5mm × 3mm DFN and TSSOP-16E Packages
LT3496 45V, 2.1MHz 3-Channel (I
LED
= 1A) Full Featured
LED Driver
V
IN
: 3V to 30V (40V
MAX
), V
OUT(MAX)
= 45V, True Color PWM Dimming =
3000:1, I
SD
< 1μA, 4mm × 3mm QFN-28 Package
LT3497 Dual 2.3MHz, Full Function LED Driver with Integrated
Schottkys and 250:1 True Color PWM Dimming
V
IN
: 2.5V to 10V, V
OUT(MAX)
= 32V, I
Q
= 6mA, I
SD
< 12μA, 2mm × 3mm
DFN-10 Package
LT3498 2.3MHz, 20mA LED Driver and OLED Driver with
Integrated Schottky
V
IN
: 2.5V to 12V, V
OUT(MAX)
= 32V, I
Q
= 1.65mA, I
SD
< 9μA, 2mm × 3mm
DFN-10 Package
LT3518/LT3517 2.3A/1.3A 45V, 2.5MHz Full Featured LED Driver with
True Color PWM Dimming
V
IN
: 3V to 30V (40V
MAX
), V
OUT(MAX)
= 42V, True Color PWM Dimming =
3000:1, I
SD
< 5μA, 4mm × 4mm QFN-16 Package
LT3590 48V, 850kHz 50mA Buck Mode LED Driver V
IN
: 4.5V to 55V, Dimming = 200:1 True Color PWM, I
SD
< 15μA,
2mm × 2mm DFN-6 and SC70 Packages
LT3592 36V, 2.2MHz, 500mA Buck Mode LED Driver
V
IN
: 3.6V to 36V, True Color PWM Dimming = 10:1, I
SD
< 1μA, 2mm × 3mm
DFN-10 and MSOP-10E Packages
LT3595 45V, 2.5MHz 16-Channel Full Featured LED Driver V
IN
: 4.5V to 55V, V
OUT(MAX)
= 45V, True Color PWM Dimming = 5000:1,
I
SD
< 1μA, 5mm × 9mm QFN-56 Package
90% Effi cient LED Driver for 60 White LEDs
Effi ciency vs Total LED Current
TOTAL LED CURRENT (mA)
0
60
EFFICIENCY (%)
70
80
90
20 40 8060 100
100
65
75
85
95
120
3598 TA05b
V
IN
= 25V
V
IN
= 16V
