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STEVAL-ILL020V1:LCD 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.

技术特点Key Features
  • Features boost section4.5 V to 36 V input voltage rangeinternal power MOSFETinternal +5 V LDO for device supplyup to 36 V output voltageconstant frequency peak current-mode control200 kHz to 1 MHz adjustable switching frequencyexternal sync for multi-device applicationpulse-skip power saving mode at light loadprogrammable soft-startprogrammable OVP protectionsingle ceramic output capacitornon-latched thermal shutdown
  • Features backlight driver sectionsix rows with 30 mA maximum current capability (adjustable)pp to 10 white LEDs per rowrows disable optionless than 500 ns minimum dimming time (1% minimum dimming duty-cycle at 20 kHz dimming frequency)±2.0% current matching between rowsLED failure (open and short circuit) detection
  • RoHS compliant
产品状态Product Status

活性

功能框图
Product Specifications
描述版本大小
DB0821: LCD panels backlight demonstration board based on the LED77061.1253 KB
Board Manufacturing Specification
描述版本大小
Gerber files for STEVAL-ILL020V1 board1.093 KB
Bill of Materials
描述版本大小
BOM for STEVAL-ILL020V1 board1.054 KB
Schematic Pack
描述版本大小
Board schematics for STEVAL-ILL020V1 board1.033 KB
订购型号Ordering Part Nummber
产品型号Marketing StatusCore ProductUnit Price (US$)*@ 1RoHS Compliance Grade
STEVAL-ILL020V1ActiveLED770655.12Ecopack2
Gerber files for STEVAL-ILL020V1 board STEVAL-ILL020V1
BOM for STEVAL-ILL020V1 board STEVAL-ILL020V1
Board schematics for STEVAL-ILL020V1 board STEVAL-ILL020V1
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2