LT3490 Linear Technology, LT3490 Datasheet - Page 12

• Manufacturer Part Number: LT3490
• Description: Single Cell 350mA LED Driver
• Manufacturer: Linear Technology

TYPICAL APPLICATIO
LTC3490
RELATED PARTS
PART NUMBER
LT
LT1932
LT1937
LTC3205
LTC3216
LTC3402
LTC3453
LT3465/LT3465A
LT3466
LT3479
ThinSOT is a trademark of Linear Technology Corporation.
12
®
1618
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
Constant Current, Constant Voltage 1.4MHz,
High Efficiency Boost Regulator
Constant Current, 1.2MHz, High Efficiency White
LED Boost Regulator
Constant Current, 1.2MHz, High Efficiency White
LED Boost Regulator
High Efficiency, Multi-Display LED Controller
1A Low Noise, High Current LED Charge Pump with
Independent Flash/Torch Current Contol
2A, 3MHz Micropower Synchronous Boost Converter V
500mA Synchronous Buck-Boost High Current LED
Driver in QFN
Constant Current, 1.2MHz/2.7MHz, High Efficiency
White LED Boost Regulator with Integrated Schottky
Diode
Dual Constant Current, 2MHz, High Efficiency
White LED Boost Regulator with Integrated Schottky
Diode
3A, Full-Featured DC/DC Converter with Soft-Start
and Inrush Current Protection
●
FAX: [phone]
1 NiMH OR
ALKALINE
CELL
LED Driver Drops to 20% Amplitude on Low-Battery Detect
+
U
●
www.linear.com
1M
ON/OFF
1M
432k
V
CTRL/SHDN
CELLS
IN
LTC3490
3.3µH
GND
COMMENTS
V
Packages
V
V
Packages
V
V
MS/EDD Packages
V
V
V
V
Packages
LOBAT
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
CAP
LED
SW
: 1.6V to 18V, V
: 1V to 10V, V
: 2.5V to 10V, V
: 2.8V to 4.5V, V
: 2.9V to 4.4V, V
: 0.85V to 5V, V
: 2.7V to 5.5V, V
: 2.7V to 16V, V
: 2.7V to 24V, V
: 2.5V to 24V, V
350mA/70mA
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
LUMILEDS
LUXEON
LXHL-BWO2
4.7µF
3490 TA05
= 34V, I
= 5V, I
= 34V, I
= 34V, I
= 34V, I
= 40V, I
= 40V, I
= 6V, I
= 5.5V, I
= 5.5V, I
Q
Q
Q
Q
= 1.2mA, I
Q
= < 38µA, I
Q
Q
Q
= 50µA, I
Q
Q
= 1.8mA, I
= 1.9mA, I
= 1.9mA, I
= 5mA, I
= 6.5mA, I
© LINEAR TECHNOLOGY CORPORATION 2005
= 300µA, I
= 0.6mA, I
LT/TP 0405 500 • PRINTED IN THE USA
SD
SD
SD
SD
SD
SD
SD
SD
< 1µA, ThinSOT Packages
< 1µA, QFN24 Package
< 16µA, DFN Package
SD
SD
< 1µA,
< 1µA, MS/EDD
< 1µA, ThinSOT
< 1µA, ThinSOT Package
< 1µA, DFN/TSSOP
< 2.5µA, DFN Packge
< 6µA, QFN Package
TM
/SC70
3490f