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Home » NEWEST Products » New by Manufacturer » STMicroelectronics » STM LED7708 16-Channel LED Driver
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STMicroelectronics LED7708 16-Channel LED Driver

STMicroelectronics LED7708 16-Channel LED Driver

STMicroelectronics LED7708 16-Channel LED Driver has been specifically designed to supply several LEDs starting from a single low-voltage rail. It integrates a boost controller, sixteen current generators and a 4-wire serial interface. The boost controller regulates the output voltage in an adaptive way, according to the LED requirements, resulting in an improved overall efficiency. The brightness of the LEDs is controlled by using the serial interface. A selectable 12-bit or 16-bit grayscale brightness control allows independent PWM on each channel. The LED7708 implements basic protection (OVP, OCP and thermal shutdown) as well as LED array protection. It can detect and manage open-LED and shorted-LED faults and different fault-management options are available in order to cover most application needs..

  • Boost controller section
    • 3.6 V to 36 V input voltage range (LDO)
    • Adaptive output voltage for high efficiency
    • Internal +5 V LDO for gate driver supply
    • Internal +3.3 V LDO for device supply
    • High performance external MOSFET driver
    • 250 kHz to 1 MHz switching frequency
    • Programmable OV and OC protection
    • Fixed frequency peak current-mode control
    • External synchronization for multi-device application
    • Overtemperature alert and thermal shutdown
  • LED array driver section
    • 16 channels with 85 mA/ch current capability
    • ±2% channel current accuracy
    • ±2% channel-to-channel current matching
    • LED short-circuit and open channel fault detection and management
    • 4-wire, 30 MHz serial interface
    • 16 x16-bit, 1x256-bit or 1x192-bit serial data formats

    • LED array driver section (Cont.)
      • Grouped or independent channel PWM control
      • Selectable 12/16-bit grayscale brightness control for local dimming
      • Programmable internal dimming oscillator
      • Programmable grayscale latency
      • Master/slave chain configuration supported

  • TV and monitor backlight units for LCD panels
  • Medium and large size LCD panel backlights
  • RGB/RGGB backlight solutions

Additional Resources

LED7708 Product Info

STEVAL-ILL035V1 Demonstration Board

STMicroelectronics' STEVAL-ILL035V1 Demonstration Board is designed to provide an application example of a compact LED backlight driver using the LED7708 device. The board is equipped with a 16-channel LED driver with integrated boost controller (the LED7708), power section components, and an STM32 microcontroller to easily control all the features via a USB connection. The board has been designed as a demonstration of a solution for medium/large LCD panel backlight drivers, but is suitable for any application involving several LEDs assembled in strings (e.g. advertisement panels, signs, gaming, etc.).

View Product Detail
  • Wide DC input voltage: 10 V to 28 V
  • Integrated boost converter with adaptive output voltage for minimum power dissipation
  • Up to 92% boost converter efficiency
  • 16 channels with up to 85 mA/ch current capability and independent PWM brightness control
  • Up to 15 white LEDs per channel
  • On-board STM32 microcontroller for total device control through 4-wire serial interface
  • Embedded open-channel and LED short-circuit faults management

  • USB connection for device control through dedicated PC-GUI
  • Expansion connector to support slave devices (daughterboard)
  • RoHS compliant

Additional Resources

STEVAL-ILL035V1 Product Info
Block Diagram
Block Diagram
Application Schematic
Application Schematic
  • STMicroelectronics
  • Lighting
  • LED Drivers|Semiconductors|Integrated Circuits|Driver ICs