PCA9626B,118

Overview

The PCA9626B,118 is a low-power I2C-bus controlled LED driver manufactured by NXP Semiconductors. It features four outputs with individually adjustable PWM frequency and duty cycle for precise brightness control. The device operates within a supply voltage range of 2.3 V to 5.5 V and supports Fast-mode Plus (Fm+) communication at frequencies up to 1 MHz. It includes an active LOW Output Enable input for asynchronous control and is available in a TSSOP20 package suitable for surface mount applications.

Feature Summary

• Four independent LED outputs with individual PWM control
• Fast-mode Plus (Fm+) I2C interface supporting up to 1 MHz
• Active LOW Output Enable pin for external synchronization
• Low power consumption design for energy-efficient operation

Applications

• LED backlighting systems
• Status indicator lighting
• Consumer electronics displays
• Automotive interior lighting

Procurement Notes

Verify the specific ordering code PCA9626B,118 against official NXP documentation to confirm package type and RoHS compliance. Ensure compatibility with system voltage levels and I2C bus speed requirements before integration. Check for any recent lifecycle status updates or alternative recommendations from the manufacturer.

Selection Notes

Select this component when four independently controllable LED channels are required with high-speed I2C communication. It is suitable for applications needing precise brightness adjustment via PWM without complex microcontroller overhead. Consider the TSSOP20 package size and thermal characteristics for PCB layout constraints.

Part Context

The PCA9626B belongs to NXP's PCA962x series of I2C-controlled LED drivers. This family provides scalable solutions for managing multiple LEDs with minimal interface lines. The device integrates standard LED driving functions with digital control capabilities, simplifying system architecture compared to discrete resistor-based current limiting approaches.

Replacement Considerations

Check NXP datasheets for direct pin-compatible alternatives within the PCA962x family, such as the PCA9625 or PCA9627, depending on the required number of output channels. Verify that any substitute maintains the same Fm+ interface speed and voltage tolerance specifications.