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LT3466
TYPICAL APPLICATIO
12V to 25/25 White LEDs
Conversion Efficiency
CAR BATTERY
12V (TYP)
9V TO 18V
85
80
V IN = 12V
25/25 LEDs
V LED1
D5
D9
L1
33 μ H
L2
33 μ H
D10
D1
V LED2
75
C4
0.1 μ F
D6
D7
C2
0.1 μ F
C3
0.1 μ F
3.3V
C IN
C8
0.1 μ F
C7
0.1 μ F
D2
D3
C9
0.1 μ F
70
65
25
LEDs
C5
0.1 μ F
D8
SW1 V IN
SW2
D4
C10
0.1 μ F
25
LEDs
60
C6
0.22 μ F
V OUT1
LT3466
V OUT2
C11
0.22 μ F
55
50
0
5
10
15
FB1
FB2
LED CURRENT (mA)
R FB1
13.3 ?
C IN : TAIYO YUDEN JMK107BJ105
C2-C5, C7-C10: TAIYO YUDEN UMK212BJ104
CTRL1
R T
CTRL2
R FB2
13.3 ?
3466 TA10b
C6, C11: TAIYO YUDEN UMK316BJ224
D1-D8: PHILIPS BAV99
D9, D10: PHILIPS BAS16
OFF ON
20.5k
1%
OFF ON
3466 TA10a
L1, L2: TOKO A914BYW-330M
RELATED PARTS
PART NUMBER
LT1618
LT1932
LT1937
LTC3200
LTC3201
LTC3202
LTC3205/LTC3206
LT3465/LT3465A
DESCRIPTION
Constant Current, Constant Voltage 1.24MHz, High Efficiency
Boost Regulator
Constant Current, 1.2MHz, High Efficiency White LED Boost
Regulator
Constant Current, 1.2MHz, High Efficiency 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 Efficiency, Multidisplay LED Controller
Constant Current, 1.2MHz/2.7MHz, High Efficiency White LED
Boost Regulator with Integrated Schottky Diode
COMMENTS
Up to 16 White LEDs, V IN : 1.6V to 18V, V OUT(MAX) = 34V,
I Q = 1.8mA, I SD < 1 μ A, MS Package
Up to 8 White LEDs, V IN : 1V to 10V, V OUT(MAX) = 34V,
I Q = 1.2mA, I SD < 1 μ A, ThinSOT TM Package
Up to 4 White LEDs, V IN : 2.5V to 10V, V OUT(MAX) = 34V,
I Q = 1.9mA, I SD < 1 μ A, ThinSOT, SC70 Packages
Up to 6 White LEDs, V IN : 2.7V to 4.5V, I Q = 8mA, I SD < 1 μ A,
MS Package
Up to 6 White LEDs, V IN : 2.7V to 4.5V, I Q = 6.5mA, I SD < 1 μ A,
MS Package
Up to 8 White LEDs, V IN : 2.7V to 4.5V, I Q = 5mA, I SD < 1 μ A,
MS Package
Up to 4 (Main), 2 (Sub) and RGB, V IN : 2.8V to 4.5V,
I Q = 50 μ A, I SD < 1 μ A, QFN-24 Package
Up to Six White LEDs, V IN : 2.7V to 16V, V OUT(MAX) = 34V,
I Q = 1.9mA, I SD < 1 μ A, ThinSOT Package
ThinSOT is a trademark of Linear Technology Corporation.
3466fa
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
20
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
LT/LT 0305 REV A ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2004
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