PCA9957HNMP

Overview

The PCA9957HNMP is a 24-channel constant-current LED driver manufactured by NXP Semiconductors. It features a 10 MHz SPI serial interface for high-speed data transmission and control. The device provides 32 mA output current per channel with 24-bit brightness resolution, enabling precise dimming capabilities. It operates within a supply voltage range of 2.3 V to 5.5 V and is housed in an HVQFN40 package. This component is designed for applications requiring efficient LED management with minimal external components.

Feature Summary

• Supports 24-channel constant-current output with independent control
• Features a high-speed 10 MHz SPI serial interface
• Provides 24-bit programmable brightness resolution per channel
• Integrates internal oscillator for simplified system design

Applications

• Automotive interior lighting systems
• Industrial LED panel illumination
• General-purpose LED backlighting arrays

Procurement Notes

Verify the specific ordering suffix matches the required package variant and temperature grade. Confirm that the 10 MHz SPI interface compatibility aligns with the host controller's timing specifications. Ensure the HVQFN40 thermal pad connection is properly managed in the PCB layout to maintain reliable operation under continuous load conditions.

Selection Notes

Select this component when a high channel count with individual current control is required alongside fast serial communication. The 32 mA output current suits standard LED strings without additional amplification. Consider the 24-bit resolution for applications demanding smooth dimming curves. Evaluate the HVQFN40 footprint against available board space constraints.

Part Context

This part belongs to the PCA995x series of LED drivers from NXP, which focuses on serial bus-controlled solutions. It complements other models like the PCA9958, offering a balance between channel density and interface speed. The series targets modern lighting applications where digital control and compact form factors are prioritized over analog alternatives.

Replacement Considerations

Public confirmed substitute part numbers: None identified.