MAX6974ATL+T

LED Driver IC Overview

The MAX6974ATL+T is a 24-output PWM LED driver IC designed for message boards and lighting applications. It operates from a 3.0V to 3.6V logic supply and supports an LED power supply ranging from 3V to 7V. The device features a linear shift register interface, enabling daisy-chaining of multiple units. Each output provides up to 30mA of current with a typical switching frequency of 33MHz. It is housed in a 40-pin TQFN package with an exposed pad for thermal management.

LED Driver IC Feature Summary

• Provides 24 individually addressable outputs for high-density LED matrix control
• Supports PWM dimming with linear shift register serial interface for simplified wiring
• Includes dedicated LED power supply pin allowing voltage separation from logic supply
• Features low headroom requirement of 0.8V above LED forward voltage

LED Driver IC Applications

• Message board displays
• LED lighting drivers
• High-density LED matrix panels

LED Driver IC Procurement Notes

Verify the specific suffix (+T) indicates tape and reel packaging when ordering. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure the operating temperature range matches your application requirements. Check for RoHS compliance status if required by your manufacturing standards. Validate the 40-TQFN package dimensions against your PCB footprint design.

LED Driver IC Selection Notes

Select this component when a high channel count is needed for large LED arrays. The separate LED supply pin allows driving LEDs at voltages different from the logic level. Consider the 30mA per output limit for direct drive applications without external transistors. The serial interface reduces microcontroller pin usage compared to parallel drivers.

LED Driver IC Part Context

This part belongs to the MAX697x family of LED display drivers. It is functionally similar to the MAX6975 but differs in pinout or feature set. The +T suffix typically denotes a specific packaging variant, such as tape and reel, distinct from the standard tube packaging of the base MAX6974ATL part number.

LED Driver IC Replacement Considerations

The MAX6974ATL+ is a compatible alternative in tube packaging. The MAX6974ATL- may serve as a substitute depending on specific environmental ratings. Verify pin compatibility before replacing with other members of the MAX697x series.