PCA9922PW,112

Overview

The PCA9922PW,112 is an NXP Semiconductors integrated circuit classified as a constant current LED driver. It features eight independent output channels designed for driving LEDs with precise current regulation. The device incorporates built-in output error detection capabilities to monitor channel integrity and report faults. It operates within a supply voltage range of 2.3V to 5.5V and supports a maximum clock frequency of 400kHz via the I2C-bus/SMBus interface. The component is housed in a TSSOP16 surface-mount package with 16 pins, suitable for space-constrained designs.

Feature Summary

• Provides eight-channel constant current drive capability for uniform LED brightness control
• Integrates hardware-based output error detection to identify open or shorted LED loads
• Communicates through standard I2C-bus and SMBus protocols for flexible system integration

Applications

• LED backlighting systems requiring fault monitoring
• Indicator lighting arrays with status reporting needs
• Display driver circuits utilizing I2C-controlled LED matrices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and lead-free soldering specifications against project requirements. Review the official datasheet for moisture sensitivity level and reflow soldering temperature profiles to ensure proper handling during assembly processes.

Selection Notes

Select this component when eight individually controlled LED outputs are required alongside diagnostic feedback. Ensure the host controller supports I2C communication at speeds up to 400kHz. Verify that the operating voltage range aligns with the system power supply rails and that the TSSOP16 package fits the available PCB footprint constraints.

Part Context

This part belongs to the PCA9922 series of LED drivers from NXP Semiconductors. It is specifically engineered for applications demanding reliable LED current regulation combined with real-time fault detection. The device simplifies system design by reducing the need for external monitoring components while maintaining high accuracy across multiple channels.

Replacement Considerations

The product is marked as No Longer Manufactured. Engineers should consult the official NXP replacement guide for qualified successor parts or compatible alternatives that maintain pinout and functional compatibility.