PCA9958HNY

Overview

The PCA9958HNY is a 24-channel SPI serial bus LED driver IC from NXP Semiconductors, housed in a 40-HVQFN package. It provides constant current outputs of up to 63 mA per channel with a supply voltage range of 2.7 V to 5.5 V. The device features an 10 MHz SPI interface for communication and supports 8-bit resolution PWM dimming at a fixed frequency of 31.25 kHz. Additional programmable features include output current adjustment via an 8-bit DAC (250 µA to 63.75 mA), group/individual dimming/flicker control, and open/short circuit detection. It operates within a temperature range of -40°C to +125°C.

Feature Summary

• 24-channel constant current LED driver optimized for RGBA LED applications
• Programmable brightness and flicker control with 8-bit resolution PWM
• Integrated open/short circuit detection and thermal shutdown protection
• HVQFN40 package with wettable flanks for automotive reliability

Applications

• Automotive interior lighting such as armrest, dome, door, and steering wheel illumination
• Industrial LCD backlighting and keyboard/backlight displays
• RGB or RGBA LED drivers for status information and breathing light effects

Procurement Notes

Verify the complete part number including the suffix 'HNY' to ensure correct packaging and tape/reel specifications. Confirm RoHS compliance and AEC-Q100 qualification status if required for automotive integration. Check datasheet revisions for any updates regarding operating conditions or pin configurations before finalizing procurement orders.

Selection Notes

Select this component when high channel count and precise current control are required for complex lighting schemes. The SPI interface offers higher bandwidth than I2C alternatives. Ensure the host microcontroller supports the required SPI clock speed and that the PCB layout accommodates the HVQFN40 footprint with adequate thermal relief for the exposed pad.

Part Context

This device belongs to the PCA9958 family of LED drivers designed for automotive and industrial environments. It shares functional similarities with other NXP LED controllers but distinguishes itself through its 24-channel capacity and specific 63 mA output capability. The HNY suffix typically denotes specific packaging and handling characteristics within the NXP product line.

Replacement Considerations

PCA9958HN/Q900Y is listed as a parameter equivalent substitute by the manufacturer.