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EUP2584 Datasheet(PDF) 1 Page - Eutech Microelectronics Inc

Part No. EUP2584
Description  White LED Step-Up Converter In Tiny SOT-23 Package
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Maker  EUTECH [Eutech Microelectronics Inc]
Homepage  http://www.eutechmicro.com

EUP2584 Datasheet(HTML) 1 Page - Eutech Microelectronics Inc

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Mar. 2008
White LED Step-Up Converter
In Tiny SOT-23 Package
The EUP2584 is a constant current step-up converter
specifically designed to drive white LEDs. The Step-up
converter topology allows series connection of the
white LEDs so the LED currents are identical for
uniform brightness. The EUP2584 switches at 1.1MHz,
allowing the use of tiny external components. The
input and output capacitor can be as small as 1µF,
saving space and cost versus alternative solutions. A
low 0.25V feedback voltage minimizes power loss in
the current setting resistor for better efficiency.
EUP2584 is enhanced with Soft-Start function and that
could significantly reduce noise induced by capacitor.
The EUP2584 is available in low profile SOT23-6
Typical Application Circuit
2.6V to 5.5V Input Range
27V Output with Over Voltage Protection
High Efficiency :85 % Typical
Internal Soft-Start
PWM Dimming Control
Internal High Power 30V MOSFET Switch
Fast 1.1MHz Switching Frequency
Small, Low-Profile Inductors and Capacitors
SOT23-6 Package
RoHS Compliant and 100% Lead (Pb)-Free
Mobile Phone
Digital Still Camera
PDAs, Handheld Computers
MP3 Players
GPS Receivers
Figure 1.
White LED Application

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