PCA9531PW,118

Overview

The PCA9531PW,118 is an NXP Semiconductors LED lighting driver IC featuring eight adjustable voltage switch outputs. It operates within a supply voltage range of 2.3 V to 5.5 V and delivers a low-level output current of 25 mA per channel. The device supports PWM dimming and communicates via a 400 kHz I2C interface. Packaged in a TSSOP-16 format, it functions across temperatures from -40°C to +85°C with a maximum power dissipation of 400 mW.

Feature Summary

• Integrates eight independent channels for direct LED control
• Supports PWM dimming for brightness adjustment
• Features internal boost and buck topology capabilities
• Includes noise filters on SCL and SDA inputs

Applications

• LED backlighting systems
• General-purpose LED illumination
• I2C-controlled lighting modules

Procurement Notes

Verify the complete part number including the suffix to confirm package type and tape/reel specifications. Confirm RoHS compliance status through official documentation before integration. Ensure the design accommodates the specified thermal dissipation limits and operating temperature range for reliable performance.

Selection Notes

Select this component when eight individually controllable LED channels are required with I2C communication. It is suitable for designs needing integrated switching topologies and PWM dimming without external microcontroller timer resources. Verify that the 25 mA sink capability meets the specific LED forward current requirements.

Part Context

This device belongs to the PCA9531 series of LED drivers designed for low-power applications. It provides a compact solution for managing multiple LEDs using standard I2C buses. The TSSOP-16 package offers a surface-mount footprint suitable for space-constrained PCB layouts.

Replacement Considerations

The PCA9531D variant serves as a pin-compatible alternative utilizing a SOIC-16 package instead of TSSOP.