LT3498
TYPICAL APPLICATION
Output Voltage Ripple
vs Load Current
MAXIMUM OUTPUT
CURRENT AT 3V INPUT
(mA)
R
FB2
VALUE REQUIRED
V
(MΩ)
7
6
5
4
3
2
1
0
OUT
25
24
23
22
21
20
19
18
17
16
15
3.57
3.40
3.24
3.09
2.94
2.80
2.67
2.49
2.37
2.21
2.05
12.5
13.4
14.4
15.6
16.8
18.1
19.6
21.2
22.5
24.2
26
1
100
0.1
10
LOAD CURRENT (mA)
3498 TA06d
RELATED PARTS
PART
NUMBER
DESCRIPTION
COMMENTS
V : 1V to 10V; V
LT1932
Constant-Current, 1.2MHz, High Efficiency White LED
Boost Regulator
= 34V; I = 1.2mA; I = <1µA; ThinSOTTM Package
OUT(MAX) Q SD
IN
LT1937
Constant-Current, 1.2MHz, High Efficiency White LED
Boost Regulator
V : 2.5V to 10V; V
= 34V; I = 1.9µA; I = <1µA; ThinSOT and
Q SD
IN
OUT(MAX)
OUT(MAX)
SC70 Packages
LT3463/
LT3463A
Dual Output, Boost/Inverter, 250mA I , Constant
V : 2.3V to 15V; V
IN
= 40V; I = 40µA; I = <1µA; 3mm × 3mm
Q SD
SW
Off-Time, High Efficiency Step-Up DC/DC Converter with DFN-10 Package
Integrated Schottky Diodes
LT3465/
LT3465A
Constant-Current, 1.2/2.7MHz, High Efficiency White LED V : 2.3V to 16V; V
= 40V; I = 40µA; I = <1µA; 3mm × 3mm
Q SD
IN
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
Boost Regulator with Integrated Schottky Diode
DFN-10 Package
LT3466/
LT3466-1
Dual Constant-Current, 2MHz, High Efficiency White LED V : 2.3V to 16V; V
= 40V; I = 65µA; I = <1µA; 3mm × 2mm
Q SD
IN
Boost Regulator with Integrated Schottky Diode
DFN-8 Package
LT3471
Dual Output, Boost/Inverter, 1.3A ISW, 1.2MHZ, High
Efficiency Boost-Inverting DC/DC Converter
V : 2.4V to 16V; V
= 40V; I = 2.5µA; I = <1µA; 3mm × 3mm
Q SD
IN
DFN-10 Package
LT3473/
LT3473A
40V, 1A , 1.2MHz Micropower Low Noise Boost Converter V : 2.2V to 16V; V
= 36V; I = 150µA; I = <1µA; 3mm × 3mm
Q SD
IN
with Output Disconnect
DFN-12 Package
LT3491
Constant-Current, 2.3MHz, High Efficiency White LED
Boost Regulator with Integrated Schottky Diode
V : 2.5V to 12V; V
= 27V; I = 12.6µA; I = <8µA; 2mm × 2mm
Q SD
IN
DFN-6 and SC70 Packages
LT3494/
LT3494A
40V, 180mA/350mA Micropower Low Noise Boost
Converter with Output Disconnect
V : 2.3V to 16V; V
= 40V; I = 65µA; I = <1µA; 3mm × 2mm
Q SD
IN
OUT(MAX)
OUT(MAX)
OUT(MAX)
DFN-8 Package
LT3497
Dual 2.3MHz, Full Function LED Driver with Integrated
Schottky Diode and 250:1 True Color PWMTM Dimming
V : 2.5V to 10V; V
= 32V; I = 6mA; I = <12µA; 3mm × 2mm
Q SD
IN
DFN-10 Package
LT3591
Constant-Current, 1MHz, High Efficiency White LED
Boost Regulator with Integrated Schottky Diode and 80:1 DFN-8 Package
True Color PWM Dimming
V : 2.5V to 12V; V
IN
= 40V; I = 4mA; I = <9µA; 3mm × 2mm
Q SD
ThinSot and True Color PWM are trademarks of Linear Technology Corporation
3498f
LT 0507 • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
24
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© LINEAR TECHNOLOGY CORPORATION 2007
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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