LINEAR LED DRIVER WITH EXTENDABLE INPUT VOLTAGE

DESCRIPTION

The UTC ULL11 is an adjustable linear LED driver offering
excellent output handling capability. This device simplifies the
design of linear and isolated LED driver.
Compared to traditional linear LED drivers, UTC ULL11 controls
the regulation of LED current with minimal power dissipation with
its low 250mV current sense FB pin. This makes it ideal for medium
to high current LED driving. The dropout voltage that needed to
drive a LED string is as low as 0.35V for UTC ULL11, and it also
provides the capability to drive longer LED string, by clamping VDD
to SGND, while the voltage across the LED string may exceed 16V.
The UTC ULL11 is available in space saving SOT-25 package
to handle more power.

FEATURES

* 10V VDD to LED voltage
* Drive current programmable by RISET
* 250mV sense voltage
* 170mA output current