NXP Semiconductors PCA9958HN/Q900Y
PCA9958 24-Bit 63 mA current LED driver with SPI for automotive applications
The PCA9958 is a 24-channel SPI serial bus 63 mA LED driver with a supply voltage range of 2.7 V to 5.5 V. This device is optimized for dimming and blinking RGBA LEDs. Each LED has its own 8-bit resolution fixed frequency operating at 31.25 kHz with an adjustable duty cycle 0% - 100% for brightness control. Additional PWM controller has a fixed frequency of 122 Hz and adjustable frequency of 15 Hz duty cycle from 0% - 99.6% for dimming and blinking control. Output peak current is adjustable with an 8-bit linear DAC from 250 µA to 63.75 mA. The PCA9958 has open and short detection circuitry and thermal shutdown protection. This device has a 4-wire SPI bandwidth of 10 MHz to communicate with the local micro.
Key features
- 24 Programmable LED drivers (24 constant current output channels can sink up to 63 mA and tolerate up to 5.5 V when OFF)
- Gradation control (slew rate and step time)
- ± 7.5 % absolute accuracy with 60 mA output current
- Up to -40 °C to +105 °C operation
- Available in HVQFN40 wettable flanks package for AEC-Q100 automotive applications
Applications
- Armrest lighting
- Cabin roof lighting
- Digital cluster
- Door lighting
- eCockpit
- Infotainment
- Steering wheel lighting
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