PCA9634PW/S911,118

Overview

The PCA9634PW/S911,118 is an NXP Semiconductors 8-bit I2C-bus LED driver optimized for RGBA color mixing applications. It features eight individually addressable outputs with 8-bit resolution (256 steps) fixed-frequency PWM controllers operating at 97 kHz. An additional group PWM controller provides unified dimming or blinking control. The device supports Fast-mode Plus (Fm+) I2C interfaces up to 1 MHz and operates on a supply voltage range of 2.3 V to 5.5 V.

Feature Summary

• Provides independent 8-bit PWM brightness control for each of the eight LED channels
• Includes a group PWM controller for simultaneous dimming or blinking of all LEDs
• Supports Fast-mode Plus (Fm+) I2C bus interface for high-speed communication
• Features software programmable LED grouping and sub-call addressing

Applications

• RGBA color mixing systems
• LED backlighting control
• Display brightness management
• I2C-based lighting automation

Procurement Notes

Verify the complete part number including the suffix ',118' to ensure correct packaging configuration. Confirm that the specific variant matches your system's voltage requirements and interface standards. Cross-reference the manufacturer datasheet for detailed electrical characteristics and thermal performance data before finalizing procurement decisions.

Selection Notes

Select this component when precise individual channel brightness control combined with global dimming capabilities is required. Ensure compatibility with Fm+ I2C bus speeds if high data throughput is necessary. Verify that the output current capabilities meet the specific LED load requirements without external drivers.

Part Context

This component belongs to NXP's PCA96xx series of LED drivers designed for efficient I2C-controlled lighting solutions. It represents an evolution in LED control technology by integrating advanced PWM functionalities within a compact package suitable for space-constrained electronic designs requiring multi-channel output management.

Replacement Considerations

Check for direct substitutes within the PCA96xx family that offer similar pinouts and functionality. Verify compatibility regarding I2C addressing schemes and voltage tolerances when considering alternative components from other manufacturers.

FAQ

What is the maximum I2C clock frequency supported?

The device supports Fast-mode Plus (Fm+) I2C bus operations with frequencies up to 1 MHz.

How many levels of brightness control are available per channel?

Each LED output has its own 8-bit resolution PWM controller, providing 256 distinct brightness steps.