MAX6977AUE+

LED Driver IC Overview

The MAX6977AUE+ is an 8-port constant-current LED driver IC manufactured by Analog Devices Inc./Maxim Integrated. It operates on a logic supply voltage ranging from 3V to 5.5V, with outputs rated for a maximum of 5.5V. Each channel provides up to 55mA of continuous current and features internal switches. The device utilizes a standard 4-wire serial interface and includes open-circuit fault detection capabilities. It is housed in a 16-TSSOP-EP package and supports operation within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Provides eight independent constant-current LED outputs with integrated internal switches
• Features industry-standard 4-wire serial interface for control and data transmission
• Includes hardware-based open-circuit fault detection for monitoring LED integrity

LED Driver IC Applications

• LED lighting systems
• Signage displays

LED Driver IC Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to the part's discontinued status. Confirm RoHS compliance and specific packaging details against official documentation before acquisition. Ensure that replacement strategies account for the end-of-life notification date and potential availability constraints in the supply chain.

LED Driver IC Selection Notes

Select this component when designing circuits requiring precise constant-current regulation for multiple LEDs without external sensing resistors. The integrated fault detection simplifies system reliability monitoring. Consider the thermal performance of the TSSOP-EP package and the power dissipation limits relative to the ambient operating environment and total channel load.

LED Driver IC Part Context

This part belongs to the MAX6977 series of LED drivers designed for high-density applications. It distinguishes itself by combining constant-current drive with fault detection in a compact surface-mount package. The series targets applications needing efficient LED control with minimal external component count, supporting both general illumination and display functions.

LED Driver IC Replacement Considerations

The MAX6977AUE+ is officially listed as obsolete. No direct public substitute part numbers are confirmed in the provided documentation. Designers must evaluate alternative components based on pin compatibility, electrical specifications, and functional equivalence.