PCA9633D16,112

Overview

The PCA9633D16,112 is a 4-bit Fast-mode plus I²C-bus LED driver manufactured by NXP Semiconductors. It features four independent output channels capable of sinking up to 25 mA per channel at VDD=5V. The device operates within a supply voltage range of 2.3 V to 5.5 V and supports I²C clock frequencies from 100 kHz to 1 MHz. It utilizes an 8-pin TSSOP package with a maximum power dissipation of 400 mW. The operational temperature range spans from -40°C to +85°C. Each channel provides 16-level brightness control via dedicated PWM registers.

Feature Summary

• Four independent open-drain output channels for direct LED connection
• Hardware-based 4-bit PWM generation for precise brightness control without CPU intervention
• I²C interface supporting standard and fast-mode plus protocols for efficient communication
• Integrated global PWM and blinking functionality for synchronized multi-channel effects

Applications

• RGB and RGBW LED color mixing systems
• Backlighting for displays and human-machine interfaces
• Status indication in consumer electronics
• Ambient lighting in smart home devices

Procurement Notes

Verify the specific suffix '112' against official NXP documentation to confirm package type and tape/reel specifications. Ensure compatibility with existing PCB footprints and I²C bus voltage levels before integration. Confirm end-of-life status if sourcing from secondary markets.

Selection Notes

Select this component when a low-pin-count solution is required for controlling multiple LEDs via a single I²C bus. It is suitable for applications needing hardware-managed PWM to reduce microcontroller load. Consider thermal constraints due to the small TSSOP-8 package when driving high-current loads near the 25 mA limit.

Part Context

The PCA9633 series belongs to NXP's family of I²C-controlled LED drivers designed for low-power applications. It complements higher-channel variants like the PCA9634 and PCA9635. The D16 designation typically indicates an 8-pin TSSOP package variant within the broader product line.

Replacement Considerations

PCA9632DP1,118 offers similar functionality with potentially lower power consumption. PCA9633DP1,118 is a common active alternative with identical electrical characteristics but may differ in packaging or manufacturing lot details.