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LT3497
TYPICAL APPLICATION
2 Li-Ion to 8/8 White LEDs
V IN
6V TO 9V
Conversion Ef?ciency
L1
15 μ H
L2
15 μ H
C3
1 μ F
85
80
75
V IN = 7.2V
8/8LEDs
R SENSE1
10 ?
SW1
CAP1
V IN
LT3497
SW2
CAP2
R SENSE2
10 ?
70
65
C1
LED1 LED2
C2
60
1 μ F
OFF ON
CTRL1 GND CTRL2
OFF ON
1 μ F
55
SHUTDOWN
AND DIMMING
SHUTDOWN
AND DIMMING
50
0
5
10
15
20
CONTROL 1
CONTROL 2
LED CURRENT (mA)
C1, C2: TAIYO YUDEN GMK212BJ105KG
C3: TAIYO YUDEN LMK212BJ105MG
L1, L2: MURATA LQH32CN150K53
RELATED PARTS
3497 TA11a
3497 TA11b
PART NUMBER
LT1937
LTC3200-5
LTC3201
LTC3202
LTC3205
LT3465/LT3465A
DESCRIPTION
Constant Current, 1.2MHz, High Ef?ciency White LED
Boost Regulator
Low Noise, 2MHz Regulated Charge Pump White LED Driver
Low Noise, 1.7MHz Regulated Charge Pump White LED Driver
Low Noise, 1.5MHz Regulated Charge Pump White LED Driver
High Ef?ciency, Multidisplay LED Controller
Constant Current, 1.2MHz/2.7MHz, High Ef?ciency White LED
Boost Regulator with Integrated Schottky Diode
COMMENTS
Up to 4 White LEDs, V IN : 2.5V to 10V, V OUT(MAX) = 34V,
I Q = 1.9mA, I SD < 1μA, ThinSOT TM /SC70 Packages
Up to 6 White LEDs, V IN : 2.7V to 4.5V, I Q = 8mA, I SD < 1μA,
ThinSOT Package
Up to 6 White LEDs, V IN : 2.7V to 4.5V, I Q = 6.5mA,
I SD < 1μA, MS Package
Up to 8 White LEDs, V IN : 2.7V to 4.5V, I Q = 5mA, I SD < 1μA,
MS Package
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
Up to 6 White LEDs, V IN : 2.7V to 16V, V OUT(MAX) = 34V,
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
LT3491
Dual 1.3A White LED Converter with 1000:1 True Color PWM
Dimming
White LED Driver in SC70 with Integrated Schottky
Drives Up to 16 100mA White LEDs. V IN : 2.5V to 24V,
V OUT(MAX) = 36V, DFN, TSSOP Packages
Drives Up to 6 20mA White LEDs, V IN : 2.5V to 12V,
V OUT(MAX) = 27V, 8-Lead SC70 Package
ThinSOT is a trademark of Linear Technology Corporation.
3497f
20 Linear Technology Corporation
(408) 432-1900 ● FAX: (408) 434-0507
www.linear.com
1630  McCarthy  Blvd.,  Milpitas,  CA  95035-7417
●
LT 1206 ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2006
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