Lumissil IS31FL3239 24-Channel LED Driver

Lumissil IS31FL3239 24-Channel LED Driver has 24 constant current channels operating over a temperature range of -40°C to 125°C. Each channel can be Pulse-Width Modulated (PWM) by 16 bits for smooth LED brightness control. In addition, each channel has an 8-bit output current control register. This allows fine-tuning of the current for rich RGB color mixing like a pure white LED color application. The IS31FL3239 24-Channel LED driver provides 38mA maximum output current from each channel which can be adjusted by one 8-bit global control register. This LED driver uses proprietary programmable technology to minimize audible noise caused by MLCC decoupling capacitors. All registers can be programmed via a high-speed I2C (1MHz). The IS31FL3239 LED driver can be shut down with minimum current consumption by either pulling the SDB pin low or by using the software shutdown feature. This LED driver is available in QFN-32 (4mm x 4mm) package. Typical applications include LED in home appliances, LED display for hand-held devices, and AI-speakers and smart home devices.

Applications

  • 2.7V-5.5V Vcc supply voltage range
  • 1MHz I2C interface, automatic address increment function with readout function
  • Four selectable I2C addresses
  • Accurate color rendition:
    • Selectable 16-bit PWM 256/1024/4096/65536
    • 8-bit dot correction
    • 8-bit global current adjust
  • Open/short detect function
  • Temperature detect function
  • 62KHz PWM frequency (8-bit PWM)
  • EMI reduction technology:
    • Spread spectrum
    • Selectable 6 phase delay
    • 180°C phase delay
  • -40°C to 125°C temperature range
  • QFN-32 (4mm x 4mm) package

Applications

  • LED in home appliances
  • LED display for hand-held devices
  • AI speakers and smart home devices

Block Diagram

Block Diagram - Lumissil IS31FL3239 24-Channel LED Driver

Application Circuit Diagram

Application Circuit Diagram - Lumissil IS31FL3239 24-Channel LED Driver

Lumissil IS31FL3239 24-Channel LED Driver