PCA9634PW,112

Overview

The PCA9634PW,112 is an I²C-bus controlled 8-bit LED driver optimized for RGBA color mixing applications. It features eight independent outputs with 8-bit resolution (256 steps) fixed-frequency PWM controllers operating at 97 kHz. An additional group PWM controller provides 256-step dimming or blinking control. The device supports Fast-mode Plus (Fm+) interfaces up to 1 MHz and operates within a supply voltage range of 2.3 V to 5.5 V. Outputs are 5.5 V tolerant with sink capabilities of 25 mA at 5 V. It utilizes a TSSOP-20 package.

Feature Summary

• Supports individual and group PWM control for precise brightness and blinking adjustments
• Enables asynchronous output enable via dedicated pin for external synchronization
• Facilitates multi-device addressing through software-programmable sub-call addresses

Applications

• RGBA color mixing systems
• LED backlighting arrays
• Architectural lighting control

Procurement Notes

Verify component status as the PCA9634PW,112 is listed as No Longer Manufactured. Confirm availability through authorized distributors or secondary markets. Ensure compliance with RoHS and REACH requirements by checking specific material declarations. Validate package integrity and lead condition prior to integration into production workflows.

Selection Notes

Select this component for applications requiring independent channel control combined with global dimming capabilities. Consider the Fm+ interface speed for high-density bus environments. Evaluate thermal dissipation limits given the 400 mW power dissipation rating in the TSSOP-20 package. Ensure system voltage aligns with the 2.3 V to 5.5 V operational range.

Part Context

This part belongs to the PCA9634 series of LED drivers from NXP Semiconductors. It is designed for efficient management of multiple LED channels using standard I²C communication protocols. The series includes variants with different packaging options such as SO20, catering to diverse PCB layout requirements while maintaining consistent functional performance across the family.

Replacement Considerations

PCA9634PW,118 is an active alternative within the same package type.