Lumissil IS32FL3237 36-Channel LED Driver

Lumissil IS32FL3237 36-Channel LED Driver has 36 constant current channels that operate from 2.7V to 5.5V 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 which allows fine-tuning the current for rich RGB color mixing like pure white LED application. The IS32FL3237 driver incorporates channels, each with 38mA maximum output current that can be adjusted by one 8-bit control register. This LED driver uses proprietary programmable algorithms to minimize audible noises caused by the MLCC decoupling capacitors. The IS32FL3237 driver registers are programmed via a high-speed I2C (1MHz). This LED driver can be turned off with minimum current consumption by either pulling the SDB pin low or by using the software shutdown feature. The IS32FL3237 LED driver is available in the eTQFP-48 package. Typical applications include automotive clusters, dashboards, automotive interiors, ambient lighting, and functional lighting.

Features

  • 2.7V to 5.5V Vcc supply voltage range
  • -40°C to 125°C operating temperature range
  • Accurate color rendition:
    • Selectable 16-bit PWM 256/1024/4096/65536
    • 8-bit dot correction
    • 8-bit global current adjust
  • 1MHz I2C interface, automatic address increment function with readout function
  • AEC-Q100 qualified
  • Open/short detect function
  • Temperature detect function
  • 62kHz PWM frequency (8-bit PWM)
  • Four selectable I2C address
  • eTQFP-48 package
  • EMI/noise reduction technology:
    • Spread spectrum
    • Selectable 6 phase delay
    • 180-degree phase delay

Applications

  • Automotive clusters
  • Dashboards
  • Automotive interiors
  • Functional lightning
  • Ambient lighting

Block Diagram

Block Diagram - Lumissil IS32FL3237 36-Channel LED Driver

Application Circuit Diagram

Application Circuit Diagram - Lumissil IS32FL3237 36-Channel LED Driver

Lumissil IS32FL3237 36-Channel LED Driver