Lumissil IS32LT3183A LIN RGB driver

The IS32LT3183A is a single chip RGB driver with a LIN interface suitable for automotive ambient color applications. The LIN master can send RGB color, intensity and control instructions over the LIN Bus and receives back status and error information. It is fully conformed to LIN standard, for data transmission rates up to 19.2kbps. It supports LIN SNPD (Slave Node Position Detection) using BSM (Bus Shunt Method), integrates key functional features for developing compact multicolor LED LIN nodes. An integrated low-drop voltage regulator to support internal circuit operation. It can sink a constant current of 60mA to each of the RGBW LEDs. 

Key features

• Four channel LIN LED driver compliant to LIN 2.0/2.1/2.2A and SAE J2602
• Integrated LDO, LIN transceiver with SNPD using Bus Shunt method
• 32kB Flash with ECC and 2kB SRAM
• 14+2 and 8+8 PWM dithering to minimize video camera flicker

Additional features

• Wide supply voltage 5.5V ~ 18V continuous with max input voltage up to 40V
• Sleep mode supply current 60µA with wake-up ia LIN bus capability
• 4 independent LED current sinks
  • Software programmable LED current, up to 60mA
  • Reconfigurable as GPIO, SPI master interface or I²C master interface
     
• Integrated MCU for LIN protocol handling and LIN message decoding
  • 1-T enhance 8051 core, 16MHz (+-5%) internal OSC, 32kB flash and 2kB SRAM
  • Each nibble of code is protected by ECC for double bit detection and single bit correction
     
• LIN Interface
  • SPI/I2C master interface
  • GPIO and external Interrupt/wake-up
  • 12-Bit SAR ADC with conversion time less than 10µs
  • On-chip temperature sensor, math Co-processor for 16-bit MUL and 32-bit DIV operations
     
• LIN Interface
  • Baud rate up 19.2kbps, Integrated LIN transceiver, internal LIN slave termination resistor
  • Compliant to LIN 2.0/2.1/2.2A and SAE J2602, support SNPD (BSM) auto addressing
     
• Protections and ESD
  • 40V load dump protected, +/- 6kV for GPIO, temperature compensation to protect LED
     
• LED drivers
  • LED color calibration via matrix calculation
  • Flash storage for calibration values
  • Intensity control (linear or logarithmic)
  • Dimming and color transition function with programmable transition time
  • Up to 16-Bit LED color range
  • PWM with spread spectrum to optimize EMI, LED temperature compensation
  • Multiple SW animation patterns stored in flash
     
• Diagnostics
  • Open/Short LED detection, high temperature warning and shutdown
  • LIN retry mode on error detection, usage statistics
     
• SOP-8-EP package
• AEC-Q100 qualification in progress

Applications

• Automotive ambient cabin lighting
• Driver awareness safety lighting
• Industrial HMI control panel