UM1351 Datasheet (Union Semiconductor) - Hysteretic Buck High Brightness LED Driver

UM1351, Hysteretic Buck High Brightness LED Driver

The UM1351 is a PWM step-down converter with internal power switch, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage.

The UM1351 can drive up to 8 series connected LEDs.

The device operates from an input supply between 6V an

UM1351 Features

* z Hysteretic Control with High Side Current Sensing z Integrated 35V 0.5Ω NDMOS z Up to 98% Efficiency z Wide Input Voltage Range: 6V to 35V z ± 5% LED Current Accuracy z Adjustable Constant LED Current z Analog or PWM Control Signal for PWM Dimming z Over Temperature, Open Circuit LED Protection z