MAX6977AAE+T

LED Driver IC Overview

The MAX6977AAE+T is an LED lighting driver IC featuring eight constant-current outputs with a boost topology. It operates within a supply voltage range of 3 V to 5.5 V and delivers up to 55 mA per channel. The device integrates LED fault detection capabilities and utilizes a linear shift register interface for control. Packaged in a 16-SSOP format, it supports through-hole or surface-mount installation styles depending on the specific variant configuration, though this part is specified as SSOP. It functions within a temperature range of -40°C to +125°C.

LED Driver IC Feature Summary

• Integrates eight constant-current output channels for uniform LED illumination.
• Includes built-in boost converter topology for driving high-voltage LED strings.
• Provides hardware-based LED fault detection for open and short circuit monitoring.
• Utilizes a serial shift register interface to minimize microcontroller pin usage.

LED Driver IC Applications

• LED backlighting for LCD displays
• General-purpose LED indicator arrays
• Portable electronic device illumination

LED Driver IC Procurement Notes

Verify the exact suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Confirm availability status as distribution channels may list limited stock or end-of-life statuses. Ensure the ordering part number matches the required SSOP package and RoHS compliance specifications before finalizing procurement orders.

LED Driver IC Selection Notes

Select this component when designing circuits requiring independent current regulation for multiple LEDs without complex external drivers. Consider the internal boost capability if the input voltage is lower than the total forward voltage of the LED string. Evaluate the thermal performance requirements given the power dissipation limits inherent in linear regulation modes at higher currents.

LED Driver IC Part Context

This part belongs to the MAX6977 series of LED drivers from Analog Devices/Maxim Integrated. The series is designed to simplify LED control by integrating current sources and fault detection into a single compact package. It serves as a specialized solution for managing multi-channel LED loads in space-constrained applications.

LED Driver IC Replacement Considerations

Check for MAX6977 variants with different suffixes such as APE or AAEE which may offer alternative packaging options like PDIP or TSSOP while maintaining identical electrical characteristics. Verify compatibility with existing PCB footprints if switching between package types.

LED Driver IC FAQ

Does the MAX6977AAE+T include an internal boost converter?

Yes, the device features an integrated boost converter topology to drive LED strings that require a voltage higher than the supply rail.

What is the maximum current per output channel?

Each of the eight output channels can deliver a constant current of up to 55 mA.