UBA3077HN
UBA3077HN is Three-channel switched-mode LED driver manufactured by NXP Semiconductors.
Three-channel switched-mode LED driver
Rev. 1
- 8 February 2011 Objective data sheet
1. General description
The UBA3077HN is a high efficiency LED driver in an HVQFN40 package for general LED lighting or backlighting LCD displays. Operating from a supply of 10 V to 42 V, it can drive up to 3 strings of 20 LEDs each. The low voltage circuitry is powered by an external 5 V voltage supply. The chip can operate autonomously or be controlled via a 400 kHz I2C-bus. The peak current in each string is fixed by an external resistor. Three independent Pulse-Width Modulated (PWM) signals are available for dimming purposes. These PWM signals are delivered either directly by the graphic...
