PCA9533DP/02,118

Overview

The PCA9533DP/02,118 is a 4-bit I²C bus and SMBus LED dimmer manufactured by NXP USA Inc. It provides linear dimming control with an operating voltage range of 2.3 V to 5.5 V. The device features four open-drain outputs capable of sourcing up to 25 mA per channel. It supports clock frequencies up to 400 kHz and operates within a temperature range of -40°C to +85°C. The component is housed in an 8-TSSOP package.

Feature Summary

• Supports I²C bus and SMBus interfaces for digital control
• Provides linear brightness adjustment for connected LEDs
• Integrates internal power-on reset circuitry
• Includes noise filters on SCL and SDA inputs

Applications

• LED backlighting systems
• RGB color mixing applications
• General-purpose GPIO expansion where unused channels are not utilized for LED driving

Procurement Notes

Verify the specific suffix /02,118 against official NXP documentation to confirm the fixed I²C address configuration, as this variant differs from other address options within the PCA9533 family. Confirm that the 8-TSSOP package matches the target PCB footprint requirements. Ensure the supply chain source provides valid RoHS compliance certificates consistent with current environmental regulations. Cross-reference the manufacturer part number with authorized distributor databases to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when linear dimming via I²C or SMBus is required rather than PWM-based blinking functions found in other variants. The fixed address associated with the /02 suffix must be compatible with the system bus topology. Consider the 25 mA output capability for direct LED driving without external transistors. Evaluate the thermal performance within the specified industrial temperature range for the intended enclosure environment.

Part Context

This part belongs to the PCA9533 series of LED controllers designed for low-power I²C applications. It serves as a specialized interface between microcontrollers and LED arrays, simplifying brightness control protocols. The series distinguishes itself by offering linear dimming capabilities alongside standard GPIO functions for non-LED bits.

Replacement Considerations

PCA9533DP/01,118 offers identical electrical specifications but utilizes a different fixed I²C address.