PCA9952TW,118

Overview

The PCA9952TW,118 is a 16-bit constant current LED driver manufactured by NXP Semiconductors. It features an I2C interface operating at frequencies up to 1 MHz and delivers a fixed output current of 57 mA per channel. The device utilizes a boost topology to support LED loads with supply voltages ranging from 3 V to 5.5 V, while the output voltage can reach up to 40 V. Packaged in a 28-pin HTSSOP format, it operates within a temperature range of -40°C to +85°C and holds AEC-Q100 automotive qualification.

Feature Summary

• Integrates 16 independent constant current channels for precise LED control
• Features internal PWM dimming capabilities to offload host processor resources
• Includes built-in boost converter topology for driving high-voltage LED arrays
• Supports standard I2C bus communication for simplified system integration

Applications

• Steering wheel LED status indication in automotive interiors
• RGB or RGBA LED lighting systems
• LCD backlight illumination circuits
• Keypad backlights for handheld devices

Procurement Notes

Verify the specific suffix Q900 when ordering, as it denotes automotive-grade qualification and RoHS compliance. Confirm package availability in Reel, Cut Tape, or MouseReel formats based on production volume requirements. Ensure the design supports the required I2C bus speed and thermal dissipation for the HTSSOP-28 enclosure.

Selection Notes

Select this component for designs requiring high channel density with minimal external components due to the integrated boost converter. It is suitable for applications needing programmable brightness without continuous MCU intervention. Consider the 57 mA output limit when sizing LEDs and ensure the input voltage range matches the system power supply.

Part Context

This part belongs to the PCA9952 series of LED drivers designed for complex lighting control. It shares functional similarities with the PCA9955 but offers higher output voltage capability via its boost architecture. The series is engineered to reduce system complexity by integrating timing and control logic directly into the driver IC.

Replacement Considerations

PCA9955TW/Q900,118 is documented as a parameter-equivalent substitute.