BL8549 Datasheet - BELLING

BL8549, 40V Backlight LED Driver

BL8549 40V Backlight LED Driver with PWM Direct Dimming DESCRIPTION The BL8549 is a high efficiency current-mode asynchronous, 40V boost converter f

Features

* Adjustable Output Voltage, Vfb=0.2V
* Output voltage 40V, driving up to 12 LED string
* Range of operation input voltage: 2.5
* 4.5V
* Output Overvoltage Protection @40V
* CE pin PWM direct dimming function
* Line regulation: 0.1%/V (typ. )
* Load regulation: 10m

Applications

* Smartphone
* 7” MID
* Portable DVD
* TFT LCD bias
* Portable LED lighting or torch
* Other application need high voltage TYPICAL APPLICATION and PIN OUT BL8549 Efficiency for Driving 10 LEDs Efficiency VS Iout for 10 LEDs Efficiency (%) 100 95 90 85 80 75 70 65

BL8549-BELLING.pdf