ALD810028SCLI

Special Purpose Overview

The ALD810028SCLI is a quad Supercapacitor Auto Balancing (SAB) MOSFET array manufactured by Advanced Linear Devices. It operates within an industrial temperature range of -40°C to +85°C and utilizes EPAD technology for precision leakage balancing in series-connected supercapacitors. The device features a typical gate threshold voltage of 2.80V at 1µA drain-source current, with output currents ranging from 0.0001µA to 10000µA as input voltage varies between 2.40V and 4.22V. It supports up to 15.0V across the supply pins and includes four independent balancing channels.

Special Purpose Feature Summary

• Automatically regulates and balances leakage currents across series-connected supercapacitors without external control circuitry
• Features precision factory-trimmed gate threshold voltages for accurate voltage limiting and balancing
• Provides near-zero additional leakage currents when cell voltages fall below rated thresholds
• Offers exponential resistance variation relative to input voltage for effective charge balancing

Special Purpose Applications

• Series-connected supercapacitor cell leakage balancing
• Energy harvesting systems requiring long-term backup power
• Zero-power voltage dividers at selected reference voltages
• Scaled supercapacitor stacks and arrays for high-voltage storage

Special Purpose Procurement Notes

Verify that the ordering suffix 'I' confirms the industrial temperature range specification (-40°C to +85°C). Confirm the package type matches the required 16-pin SOIC configuration. Ensure static control procedures are followed during handling due to ESD sensitivity. Cross-reference the specific part number against manufacturer documentation to validate RoHS compliance and lead-free status.

Special Purpose Selection Notes

Select this component for applications requiring automatic balancing of up to four series-connected supercapacitors. The quad configuration allows managing multiple cells within a single package. Consider the exponential current response characteristics when designing for specific voltage limits. Verify that the maximum operating current and breakdown voltage ratings align with the target supercapacitor stack specifications.

Special Purpose Part Context

This device belongs to the ALD8100xx family of SAB MOSFETs designed for supercapacitor balancing. It complements the dual-channel ALD910028 variant. The product line leverages proprietary EPAD technology to deliver low-power, high-precision analog solutions for energy storage management. These components address the critical need for voltage equalization in series capacitor banks.

Special Purpose Replacement Considerations

Public confirmed substitute part numbers: None identified.