LTC3490 Datasheet, PDF (12/12 Pages) Linear Technology – Single Cell 350mA LED Driver

LTC3490
TYPICAL APPLICATIO
LED Driver Drops to 20% Amplitude on Low-Battery Detect
3.3µH
1 NiMH OR ₊
ALKALINE
CELL
ON/OFF
1M
1M 432k
V_IN
SW
CAP
LTC3490
350mA/70mA
CTRL/SHDN LED
4.7µF
CELLS LOBAT
GND
LUMILEDS
LUXEON
LXHL-BWO2
3490 TA05
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT^®1618
Constant Current, Constant Voltage 1.4MHz,
High Efficiency Boost Regulator
V_IN: 1.6V to 18V, V_OUT(MAX) = 34V, I_Q = 1.8mA, I_SD < 1µA, MS/EDD
Packages
LT1932
Constant Current, 1.2MHz, High Efficiency White
LED Boost Regulator
V_IN: 1V to 10V, V_OUT(MAX) = 34V, I_Q = 1.2mA, I_SD < 1µA, ThinSOT Packages
LT1937
Constant Current, 1.2MHz, High Efficiency White
LED Boost Regulator
V_IN: 2.5V to 10V, V_OUT(MAX) = 34V, I_Q = 1.9mA, I_SD < 1µA, ThinSOT^TM/SC70
Packages
LTC3205
LTC3216
High Efficiency, Multi-Display LED Controller
1A Low Noise, High Current LED Charge Pump with
Independent Flash/Torch Current Control
V_IN: 2.8V to 4.5V, V_OUT(MAX) = 6V, I_Q = 50µA, I_SD < 1µA, QFN24 Package
V_IN: 2.9V to 4.4V, V_OUT(MAX) = 5.5V, I_Q = 300µA, I_SD < 2.5µA, DFN Package
LTC3402
2A, 3MHz Micropower Synchronous Boost Converter V_IN: 0.85V to 5V, V_OUT(MAX) = 5V, I_Q = < 38µA, I_SD < 1µA,
MS/EDD Packages
LTC3453
500mA Synchronous Buck-Boost High Current LED V_IN: 2.7V to 5.5V, V_OUT(MAX) = 5.5V, I_Q = 0.6mA, I_SD < 6µA, QFN Package
Driver in QFN
LT3465/LT3465A
Constant Current, 1.2MHz/2.7MHz, High Efficiency V_IN: 2.7V to 16V, V_OUT(MAX) = 34V, I_Q = 1.9mA, I_SD < 1µA, ThinSOT Package
White LED Boost Regulator with Integrated Schottky
Diode
LT3466
Dual Constant Current, 2MHz, High Efficiency
V_IN: 2.7V to 24V, V_OUT(MAX) = 40V, I_Q = 5mA, I_SD < 16µA, DFN Package
White LED Boost Regulator with Integrated Schottky
Diode
LT3479
3A, Full-Featured DC/DC Converter with Soft-Start
and Inrush Current Protection
V_IN: 2.5V to 24V, V_OUT(MAX) = 40V, I_Q = 6.5mA, I_SD < 1µA, DFN/TSSOP
Packages
ThinSOT is a trademark of Linear Technology Corporation.
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3490fa
LT 0606 REV A • PRINTED IN THE USA
© LINEAR TECHNOLOGY CORPORATION 2005