EUP2983 Datasheet, PDF (1/8 Pages) Eutech Microelectronics Inc – White LED Driver For Buck-Boost Application

EUP2983
White LED Driver For
Buck-Boost Application
DESCRIPTION
The EUP2983 is a constant current boost converter
specially designed for driving white LEDs with wide
input range. The unique converter topology provide a
load voltage which can be greater or less than the input
voltage. With the tightly regulated load current, the
EUP2983 allows series connection with multiple
strings of the white LEDs.
The brightness of the LEDs can be adjusted through a
voltage level on the CTRL pin or by applying a PWM
signal to CTRL pin. 1MHz current-mode, pulse-width
modulated (PWM) operation allows for small input and
output capacitors and a small inductor while
minimizing ripple on the input supply/battery.
Programmable soft-start eliminates inrush current
during startup.
The EUP2983 is available in a space-saving, 8-pin
3mm x 3mm TDFN package.
FEATURES
z 6V to 25V Input Range
z 32V (typ.) Output with Overvoltage Protection
z Up to 90% Efficiency
z Flexible Analog or PWM Dimming Control
z Internal High Power MOSFET Switch
z 1MHz PWM Operation
z Small, Low-Profile Inductors and Capacitors
z 3mm× 3mm TDFN-8 Package
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z 7~10 inch White LED Display Backlighting
z 12V Automotive Display System
z PDVD and Subnotebooks
z LED Lighting
Typical Application Circuit
DS2983 Ver1.2 Nov. 2008
Figure 1. High Brightness LEDs Application
1