PCA9634D,112

Description：IC LED DRIVER PS I2C 25MA 20SO
Series：-
Mfr：NXP USA Inc.
Package：Tube

SKU:c71a6af1bd8c Category: LED Drivers IC Brand: NXP USA Inc.

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Product introduction

Product Detailed Parameters

Description：IC LED DRIVER PS I2C 25MA 20SO
Series：-
Mfr：NXP USA Inc.
Package：Tube
Type：Power Switch
Topology：-
Internal Switch(s)：Yes
Number of Outputs：8
Voltage - Supply (Min)：2.3V
Voltage - Supply (Max)：5.5V
Voltage - Output：5.5V
Current - Output / Channel：25mA
Frequency：25MHz
Dimming：I2C
Applications：Backlight
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：20-SOIC (0.295", 7.50mm Width)
Supplier Device Package：20-SO
Grade：-
Qualification：-

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PCA9634D,112

Overview

The PCA9634D,112 is an I²C-bus controlled 8-bit LED driver optimized for RGBA color mixing applications. It features eight independent outputs with individual 8-bit PWM controllers operating at 97 kHz and a group PWM controller for uniform dimming or blinking. 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, providing 25 mA sink current in open-drain mode or 25 mA sink/10 mA source in totem-pole mode. Packaged in a 20-SOIC format, it allows software programmable addressing and reset functions.

Feature Summary

Supports individual and group PWM control for precise brightness and color mixing
Enables asynchronous output enable via dedicated OE pin
Facilitates multi-device synchronization through sub-call addressing
Integrates software reset capability for system initialization

Applications

RGBA backlight systems
LED display drivers
Color mixing lighting controls

Procurement Notes

Verify the specific suffix '112' against manufacturer documentation to confirm package and tape/reel specifications. Cross-reference official NXP datasheets for the PCA9634 series to ensure compatibility with existing designs, as suffixes may indicate variations in packaging or environmental compliance that do not alter electrical function.

Selection Notes

Select this component when designing systems requiring independent per-LED brightness control combined with global dimming capabilities. Ensure the design accommodates the 2.3 V to 5.5 V supply range and utilizes the Fm+ interface for efficient bus communication. Consider the 20-pin SOIC footprint for PCB layout constraints.

Part Context

This part belongs to the PCA9634 family of LED controllers from NXP Semiconductors. It is designed for applications demanding high-resolution color control and efficient I²C bus management. The device represents a solution for managing multiple LED channels with minimal microcontroller overhead.