CYT2506 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – White LED Step-Up Converter

White LED Step-Up
Converter
(Preliminary)
CYT2506
Description
The CYT2506 is a step-up DC/DC converter
specifically designed to drive white LEDs with a
constant current. The device can drive two, three
or four LEDs in series from a Li-Ion cell. Series
connection of the LEDs provides identical LED
current resulting in uniform brightness and
eliminating the need for ballast resistors. The
CYT2506 switches at 1.2MHz, allowing the use of
Features
¾ Inherently Matched LED Current.
¾ High Efficiency: 84% Typical.
¾ Drives Up to Four LEDs from a 3.2V Supply.
¾ Drives Up to Six LEDs from a 5V Supply.
¾ Fast 1.2MHz Switching Frequency.
¾ Uses Tiny 1mm Tall Inductors.
¾ Requires Only 0.22µF Output Capacitor.
¾ Low Profile SC70 and SOT Packaging.
any tiny external components. The output
capacitor can be as small as 0.22µF, saving space Application
and cost versus alternative solutions. A low 95mV ¾ Cellular Phones
feedback voltage minimizes power loss in the ¾ PDAs, Handheld Computuers
current setting resistor for better efficiency.
¾ Digital Camera
¾
CYT2506 is available in low profile SC70 and
¾
SOT packages.
MP3 Players
GPS Receivers
Pin Configuration
5 Lead TSOT-23
6 Lead SC70
Application Diagram
Preliminary and all contents are subject to change without prior notice
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