ALD810024SCLI

Special Purpose Overview

The ALD810024SCLI is a quad N-channel Supercapacitor Auto Balancing (SAB™) MOSFET array manufactured by Advanced Linear Devices, Inc. It utilizes EPAD® technology to automatically balance voltage and leakage current across up to four series-connected supercapacitors. The device features a precision gate threshold voltage of 2.40V at an output current of 1µA. Its effective resistance varies exponentially with the input voltage, providing active balancing without external control circuitry.

Special Purpose Feature Summary

• Automatically regulates and balances leakage currents in series-connected supercapacitor stacks
• Precision factory trimmed for accurate voltage and current characteristics
• Provides near-zero additional leakage currents below rated voltages
• Offers fast response time with zero power dissipation when cell voltage is low

Special Purpose Applications

• Series-connected supercapacitor cell leakage balancing
• Energy harvesting systems
• Long-term backup battery applications with supercapacitor outputs
• Zero-power voltage dividers at selected voltages
• Scaled supercapacitor stacks and arrays

Special Purpose Procurement Notes

Verify that the ordering suffix 'L' confirms lead-free (RoHS) compliance as specified in the manufacturer's documentation. Confirm the package type matches the required application constraints. Ensure the operating temperature range aligns with the specific environmental requirements of the deployment scenario.

Special Purpose Selection Notes

Select this component when balancing multiple supercapacitors in series requires precise, automatic voltage regulation. The quad configuration supports up to four cells per package. Verify that the maximum drain-source voltage and operating current limits meet the specific stack requirements. Consider the industrial temperature range if operation outside commercial limits is necessary.

Special Purpose Part Context

This part belongs to the ALD8100xx family of SAB™ MOSFET arrays designed for supercapacitor balancing. It is distinct from the dual-channel ALD9100xx series. The device integrates four matched MOSFETs on a single chip, utilizing production-proven EPAD® technology to ensure high precision and reliability in energy storage management applications.

Special Purpose Replacement Considerations

ALD810024SALI serves as the industrial temperature variant of this component.

Special Purpose FAQ

How does the ALD810024SCLI achieve supercapacitor balancing?

It uses a precision gate threshold voltage mode where the output current increases exponentially with the input voltage, acting as a variable resistor to shunt excess charge.

What is the typical gate threshold voltage for this device?

The typical gate threshold voltage is 2.40V when measured at a drain-source current of 1µA.

Does the device consume significant power during balancing?

No, it dissipates essentially no power when the connected supercapacitor charges to less than 2.20V, minimizing overall system power consumption.