LT3590
16
3590f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007
LT 0707 • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1932 Constant Current, 1.2MHz, High Effi ciency White LED Boost
Regulator
V
IN
: 1.0V to 10.0V, V
OUT(MAX)
= 34V, Dimming Analog/PWM,
I
SD
< 1μA, ThinSOT™ Package
LT3003 Three Channel LED Ballaster with PWM Dimming V
IN
: 3.0V to 48.0V, Dimming 3,000:1 True Color PWM™,
I
SD
<5μA, MSOP-10 Package
LT3465/A Constant Current, 1.2/2.7MHz, High Effi ciency White LED Boost
Regulator with Integrated Schottky Diode
V
IN
: 2.7V to 16.0V, V
OUT(MAX)
= 34V, Dimming Analog/PWM,
I
SD
<1μA, ThinSOT Package
LT3466/-1 Dual Constant Current, 2MHz, High Effi ciency White LED Boost
Regulator with Integrated Schottky Diode
V
IN
: 2.7V to 24.0V, V
OUT(MAX)
= 40V, Dimming 5mA, I
SD
<16μA,
3mm × 3mm DFN-10
LT3474 36V, 1A (I
LED
), 2MHz,Step-Down LED Driver V
IN
: 4.0V to 36V, V
OUT(MAX)
= 13.5V, Dimming 400:1 True Color
PWM, I
SD
<1μA, TSSOP16E Package
LT3475 Dual 1.5A(I
LED
), 36V, 2MHz, Step-Down LED Driver V
IN
: 4.0V to 36V, V
OUT(MAX)
= 13.5V, Dimming 3,000:1 True Color
PWM, I
SD
<1μA, TSSOP20E Package
LT3476 Quad Output 1.5A, 2MHz High Current LED Driver with 1,000:1
Dimming
V
IN
: 2.8V to 16.0V, V
OUT(MAX)
= 36.0V, Dimming 1,000:1 True
Color PWM, I
SD
<10μA, 5mm × 7mm QFN-10
LT3478/-1 4.5A, 2MHz High Current LED Driver with 3,000:1 Dimming V
IN
: 2.8V to 36.0V, V
OUT(MAX)
= 40.0V, Dimming 1,000:1 True
Color PWM, I
SD
<10μA, 5mm × 7mm QFN-10
LT3486 Dual 1.3A, 2MHz High Current LED Driver V
IN
: 2.5V to 24.0V, V
OUT(MAX)
= 36.0V, Dimming 1,000:1 True
Color PWM, I
SD
<1μA, 5mm × 3mm DFN, TSSOP-16E Package
LT3491 Constant Current, 2.3MHz, High Effi ciency White LED Boost
Regulator with Integrated Schottky Diode
V
IN
: 2.5V to 12.0V, V
OUT(MAX)
= 27V, Dimming 300:1 True Color
PWM, I
SD
<8μA, 2mm × 2mm DFN-6, SC70 Package
LT3496 Triple Output 750mA, 2.1 MHz High Current LED Driver with 3,000:1
Dimming
V
IN
: 3.0V to 30.0V, V
OUT(MAX)
= 40.0, Dimming 3,000:1 True
Color PWM, I
SD
<1μA, 4mm × 5mm QFN-28
LT3497 Dual 2.3MHz, Full Function LED Driver with Integrated Schottkys and
250:1 True Color PWM Dimming
V
IN
: 2.5V to 10.0V, V
OUT(MAX)
= 32, Dimming 250:1 True Color
PWM, I
SD
<12μA, 2mm × 3mm DFN-10
LT3498 20mA LED Driver and OLED Driver Integrated Schottkys V
IN
: 2.5 to 12.0V, V
OUT(MAX)
= 32, Dimming Analog/PWM,
I
SD
<8.5μA, 2mm × 3mm DFN-12
LT3517 1.3A, 2.5MHz High Current LED Driver with 3,000:1 Dimming V
IN
: 3.0V to 30.0V, Dimming 3,000:1 True Color PWM, I
SD
<1μA,
4mm × 4mm QFN-16
LT3518 2.3A, 2.5MHz High Current LED Driver with 3,000:1 Dimming V
IN
: 3.0V to 30.0V, Dimming 3,000:1 True Color PWM, I
SD
<1μA,
4mm × 4mm QFN-16
LT3591 Constant Current, 1MHz, High Effi ciency White LED Boost Regulator
with Integrated Schottky Diode and 80:1 True Color PWM Dimming
V
IN
: 2.5V to 12.0V, V
OUT(MAX)
= 40, Dimming 80:1 True Color
PWM, I
SD
<9μA, 2mm × 3mm DFN-8
ThinSOT and True Color PWM are trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
24V Supply for 6 LED String, 50mA Current
Conversion Effi ciency
V
IN
24V
CONTROL
>1.5V
L1: MURATA LQH32CN-221
CTRL
V
IN
R1
4
Ω
50mA
LT3590
VREG SW
LED
GND
C2
1μF
C3
0.1μF
C1
1μF
3590 TA08a
L1
220μH
LED CURRENT (mA)
0
EFFICIENCY (%)
75
80
85
30
50
70
65
60
10 20 40
90
95
100
3590 TA08b
