Automotive

Proven LED controller technology for automotive applications

NXP’s automotive LED controllers offer highest reliability combined with LED dimming, blinking and color mixing capabilities. Devices can be used in a wide range of applications such as LED backlighting, button illumination or tell-tale illumination.

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Key features and benefits

  • Totem pole outputs with 25 mA sink and 10 mA source current at 5 V
  • 16 independent and 1 master PWM channel for individual brightness control, global dimming and color mixing
  • Operating power supply voltage range from 2.3 V to 5.5 V
  • Asynchronous Output Enable pin for global ON/OFF or blinking
  • 5.5 V tolerant inputs
  • 1 MHz Fast-mode Plus compatible I2C interface with 30 mA high drive capability on SDA output for driving high capacitive buses
  • -40 °C to +85 °C operating temperature range
  • Automotive AEC-Q100 compliant qualification for highest reliability and robustness
  • TSSOP28 package

Key applications

  • Display backlighting for instrument clusters, climate controls, car radios
  • Illumination of tell-tales and push buttons

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Descriptive summary

Our automotive LED controllers feature sixteen independent PWM channels for individual brightness control of each channel. These are complemented by one master PWM controller for global dimming of all sixteen channels. For asynchronous control of the LEDs, an active low output enable pin allows you to program all the PWM outputs to logic ‘1’, logic ‘0’ or ‘high-impedance’. PWM resolution ranges from 8-bit (256 steps) with fixed 97 kHz PWM frequency to 12-bit (4096 steps) with programmable PWM frequency between 40 Hz and 1000 Hz.

Fast interconnect

A two-wire I2C bus allows the automotive LED controllers to interconnect to the microcontroller at speeds up to 1 MHz (FastMode+). They are at 5 V capable to sink 25 mA respectively to source 10 mA per PWM channel. Qualified compliant to AEC-Q100 automotive qualification standard, the controllers are available in TSSOP28 package and offer the highest reliability.

Products

Type numberDescriptionStatusQuick access
PCA9635PW16-bit Fm+ I2C-bus LED driver Download datasheet
Order sample
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PCA9685PW16-channel, 12-bit PWM Fm+ I2C-bus LED controller Download datasheet
Order sample
Buy online

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