LT3498
24
3498fa
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 0508 REV A • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART
NUMBER DESCRIPTION COMMENTS
LT1932 Constant-Current, 1.2MHz, High Effi ciency White LED
Boost Regulator
V
IN
: 1V to 10V; V
OUT(MAX)
= 34V; I
Q
= 1.2mA; I
SD
= <1μA; ThinSOT
TM
Package
LT1937 Constant-Current, 1.2MHz, High Effi ciency White LED
Boost Regulator
V
IN
: 2.5V to 10V; V
OUT(MAX)
= 34V; I
Q
= 1.9μA; I
SD
= <1μA; ThinSOT and
SC70 Packages
LT3463/
LT3463A
Dual Output, Boost/Inverter, 250mA I
SW
, Constant Off-
Time, High Effi ciency Step-Up DC/DC Converter with
Integrated Schottky Diodes
V
IN
: 2.3V to 15V; V
OUT(MAX)
= ±40V; I
Q
= 40μA; I
SD
= <1μA; 3mm × 3mm
DFN-10 Package
LT3465/
LT3465A
Constant-Current, 1.2/2.7MHz, High Effi ciency White LED
Boost Regulator with Integrated Schottky Diode
V
IN
: 2.3V to 16V; V
OUT(MAX)
= 40V; I
Q
= 40μA; I
SD
= <1μA; 3mm × 3mm
DFN-10 Package
LT3466/
LT3466-1
Dual Constant-Current, 2MHz, High Effi ciency White LED
Boost Regulator with Integrated Schottky Diode
V
IN
: 2.3V to 16V; V
OUT(MAX)
= 40V; I
Q
= 65μA; I
SD
= <1μA; 3mm × 2mm
DFN-8 Package
LT3471 Dual Output, Boost/Inverter, 1.3A ISW, 1.2MHZ, High
Effi ciency Boost-Inverting DC/DC Converter
V
IN
: 2.4V to 16V; V
OUT(MAX)
= ±40V; I
Q
= 2.5μA; I
SD
= <1μA; 3mm × 3mm
DFN-10 Package
LT3473/
LT3473A
40V, 1A , 1.2MHz Micropower Low Noise Boost Converter
with Output Disconnect
V
IN
: 2.2V to 16V; V
OUT(MAX)
= 36V; I
Q
= 150μA; I
SD
= <1μA; 3mm × 3mm
DFN-12 Package
LT3491 Constant-Current, 2.3MHz, High Effi ciency White LED
Boost Regulator with Integrated Schottky Diode
V
IN
: 2.5V to 12V; V
OUT(MAX)
= 27V; I
Q
= 12.6μA; I
SD
= <8μA; 2mm × 2mm
DFN-6 and SC70 Packages
LT3494/
LT3494A
40V, 180mA/350mA Micropower Low Noise Boost
Converter with Output Disconnect
V
IN
: 2.3V to 16V; V
OUT(MAX)
= 40V; I
Q
= 65μA; I
SD
= <1μA; 3mm × 2mm
DFN-8 Package
LT3497 Dual 2.3MHz, Full Function LED Driver with Integrated
Schottky Diode and 250:1 True Color PWM
TM
Dimming
V
IN
: 2.5V to 10V; V
OUT(MAX)
= 32V; I
Q
= 6mA; I
SD
= <12μA; 3mm × 2mm
DFN-10 Package
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 12V; V
OUT(MAX)
= 40V; I
Q
= 4mA; I
SD
= <9μA; 3mm × 2mm
DFN-8 Package
ThinSot and True Color PWM are trademarks of Linear Technology Corporation
Output Voltage Ripple
vs Load Current
V
OUT
R
FB2
VALUE REQUIRED
(MΩ)
MAXIMUM OUTPUT
CURRENT AT 3V INPUT
(mA)
25 3.57 12.5
24 3.40 13.4
23 3.24 14.4
22 3.09 15.6
21 2.94 16.8
20 2.80 18.1
19 2.67 19.6
18 2.49 21.2
17 2.37 22.5
16 2.21 24.2
15 2.05 26
LOAD CURRENT (mA)
0.1
4
5
7
10
3
2
1 100
0
1
6
V
OUT2
PEAK-TO-PEAK RIPPLE (mV)
3498 TA06d
