Datasheet Details
- Part number
- BL8549
- Manufacturer
- BELLING
- File Size
- 508.83 KB
- Datasheet
- BL8549-BELLING.pdf
- Description
- 40V Backlight LED Driver
BL8549 Description
BL8549 40V Backlight LED Driver with PWM Direct Dimming .
The BL8549 is a high efficiency current-mode asynchronous, 40V boost converter for LED backlight driving.
BL8549 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
BL8549 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
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