16
LT3491
3491fa
© LINEAR TECHNOLOGY CORPORATION 2006
LT 0406 • PRINTED IN THE USA
PART NUMBER DESCRIPTION COMMENTS
LT1618 Constant Current, Constant Voltage 1.24MHz, High Efficiency Up to 16 White LEDs, V
IN
: 1.6V to 18V, V
OUT(MAX)
= 34V,
Boost Regulator I
Q
= 1.8mA, I
SD
< 1µA, MS Package
LT1932 Constant Current, 1.2MHz, High Efficiency White LED Up to 8 White LEDs, V
IN
: 1V to 10V, V
OUT(MAX)
= 34V,
Boost Regulator I
Q
= 1.2mA, I
SD
< 1µA, ThinSOT
TM
Package
LT1937 Constant Current, 1.2MHz, High Efficiency White LED Up to 4 White LEDs, V
IN
: 2.5V to 10V, V
OUT(MAX)
= 34V,
Boost Regulator I
Q
= 1.9mA, I
SD
< 1µA, ThinSOT/SC70 Packages
LTC
®
3200 Low Noise, 2MHz Regulated Charge Pump White LED Driver Up to 6 White LEDs, V
IN
: 2.7V to 4.5V, I
Q
= 8mA, I
SD
< 1µA,
MS Package
LTC3200-5 Low Noise, 2MHz Regulated Charge Pump White LED Driver Up to 6 White LEDs, V
IN
: 2.7V to 4.5V, I
Q
= 8mA, I
SD
< 1µA,
ThinSOT Package
LTC3201 Low Noise, 1.7MHz Regulated Charge Pump White LED Driver Up to 6 White LEDs, V
IN
: 2.7V to 4.5V, I
Q
= 6.5mA, I
SD
< 1µA,
MS Package
LTC3202 Low Noise, 1.5MHz Regulated Charge Pump White LED Driver Up to 8 White LEDs, V
IN
: 2.7V to 4.5V, I
Q
= 5mA, I
SD
< 1µA,
MS Package
LTC3205 High Efficiency, Multidisplay LED Controller Up to 4 (Main), 2 (Sub) and RGB, V
IN
: 2.8V to 4.5V,
I
Q
= 50µA, I
SD
< 1µA, 24-Lead QFN Package
LT3465/LT3465A Constant Current, 1.2MHz/2.7MHz, High Efficiency White LED Up to 6 White LEDs, V
IN
: 2.7V to 16V, V
OUT(MAX)
= 34V,
Boost Regulator with Integrated Schottky Diode I
Q
= 1.9mA, I
SD
< 1µA, ThinSOT Package
LT3466/LT3466-1 Dual Full Function, 2MHz Diodes White LED Step-Up Converter Up to 20 White LEDs, V
IN
: 2.7V to 24V, V
OUT(MAX)
= 39V,
with Built-In Schottkys DFN, TSSOP-16 Packages
LT3486 Dual 1.3A White LED Converter with 1000:1 True Color PWM Drives Up to 16 100mA White LEDs. V
IN
: 2.5V to 24V,
Dimming V
OUT(MAX)
= 36V, DFN, TSSOP Packages
ThinSOT is a trademark of Linear Technology Corporation.
RELATED PARTS
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
TYPICAL APPLICATIO
U
Li-Ion Driver for Six White LEDs Efficiency
CTRL
V
IN
C2
1µF
C1
1µF
L1
10µH
V
IN
3V TO 5V
R
SENSE
10Ω
3491 TA06a
LT3491
SHUTDOWN AND
DIMMING CONTROL
SW
CAP
LED
GND
C1: TAIYO YUDEN LMK212BJ105MD
C2: TAIYO YUDEN GMK316BJ105ML
L1: MURATA LQH32CN100
LED CURRENT (mA)
0
EFFICIENCY (%)
60
70
20
3491 TA06b
50
40
65
75
55
45
5
10
15
80
V
IN
= 3.6V
6 LEDs
