STEVAL-ILL020V1LCD panels backlight demonstration board based on the LED7706
This demonstration board is based on the LED7706 and implements a high efficiency monolithic boost converter and six controlled current generators (rows) specifically designed to supply LEDs arrays used in the backlight of LCD panels.
The device can manage an output voltage up to 36 V (i.e. ten white-LEDs per row).
The generators can be externally programmed to sink up to 30 mA and can be dimmed via a PWM signal (1% dimming duty cycle at 20 kHz can be managed).
The device allows to detect and manage the open and shorted LED faults and to let unused rows floating.
Basic protections (output overvoltage, internal MOSFET overcurrent and thermal shutdown) are provided.
- Features boost section
4.5 V to 36 V input voltage range internal power MOSFET internal +5 V LDO for device supply up to 36 V output voltage constant frequency peak current-mode control 200 kHz to 1 MHz adjustable switching frequency external sync for multi-device application pulse-skip power saving mode at light load programmable soft-start programmable OVP protection single ceramic output capacitor non-latched thermal shutdown
- Features backlight driver section
six rows with 30 mA maximum current capability (adjustable) pp to 10 white LEDs per row rows disable option less than 500 ns minimum dimming time (1% minimum dimming duty-cycle at 20 kHz dimming frequency) ±2.0% current matching between rows LED failure (open and short circuit) detection
- RoHS compliant
DB0821: LCD panels backlight demonstration board based on the LED7706
Board Manufacturing Specification
Gerber files for STEVAL-ILL020V1 board
Bill of Materials
BOM for STEVAL-ILL020V1 board
Board schematics for STEVAL-ILL020V1 board
Sample & BuyTop
|Part Number||Marketing Status||Core Product||Order From ST||Unit Price (US$)*|
|Distributor Availability||RoHS Compliance Grade||Download
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.