DESCRIPTION
The EUP2561 is a constant current step-up converter specially designed for driving white LEDs. The step-up converter topology allows series connection of the white LEDs so the LED currents are identical for uniform brightness. The EUP2561 can drive 6 LEDs in series. The brightness of the LEDs can be adjusted through a voltage level on the CTRL pin or by applying a PWM signal to CRTL pin.

FEATURES
● 2.6V to 5.5V Input Range
● 26V (max) Output with Overvoltage Protection
● Up to 87% Efficiency
● Flexible Analog or PWM Dimming Control
● Internal High Power 30V MOSFET Switch
● < 1µA shutdown Current
● Fast 1MHz PWM Operation
● Small, Low-Profile Inductors and Capacitors
● 3mm× 3mm DFN-8 Package
● RoHS Compliant and 100% Lead (Pb)-Free

APPLICATIONS
● Cell Phones and Smart Phones
● PDAs, Palmtops, and Wireless Handhelds
● e-Books and Subnotebooks
● White LED Display Backlighting