ALD910022SALI

Special Purpose Overview

The ALD910022SALI is a dual-channel Supercapacitor Auto Balancing (SAB) MOSFET array manufactured by Advanced Linear Devices Inc. It utilizes EPAD technology to balance voltage and leakage current in series-connected supercapacitors, preventing over-voltages. The device features precision factory-trimmed gate threshold voltages of 2.20V at 1µA drain-source current. It operates within an industrial temperature range of -40°C to +85°C and is housed in an 8-pin SOIC package.

Special Purpose Feature Summary

• Automatically regulates and balances leakage currents across series-connected supercapacitors
• Features precision factory-trimmed gate threshold voltages for accurate balancing
• Provides exponential variable resistance characteristics based on input voltage
• Minimizes additional leakage currents and power dissipation

Special Purpose Applications

• Series-connected supercapacitor cell leakage balancing
• Energy harvesting systems
• Long-term backup battery with supercapacitor outputs
• Zero-power voltage divider applications

Special Purpose Procurement Notes

Verify the specific ordering suffix 'I' confirms the industrial operating temperature range (-40°C to +85°C). Confirm the SALI designation corresponds to the 8-pin SOIC package type. Ensure compliance with RoHS lead-free specifications as indicated by the 'L' suffix. Cross-reference the manufacturer's official documentation for any updates regarding pin configurations or absolute maximum ratings.

Special Purpose Selection Notes

Select this component for applications requiring automatic balancing of two series-connected supercapacitors. The device is suitable where precise voltage regulation and minimal additional leakage are critical. Consider the industrial temperature rating for environments subject to extreme cold or heat. Evaluate the exponential current response against the specific leakage characteristics of the target supercapacitors.

Special Purpose Part Context

This part belongs to the ALD9100xx family of SAB MOSFETs designed for balancing up to two series-connected supercapacitors. It shares core technology with the quad-channel ALD810022 but offers a dual-channel configuration optimized for smaller stacks. The product line emphasizes zero-leakage performance below rated voltages and fast response times.

Special Purpose Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

Special Purpose FAQ

What is the typical gate threshold voltage for the ALD910022?

The typical gate threshold voltage is 2.20V when measured at a drain-source current of 1µA.

How does the output current change with input voltage?

The output current increases exponentially with input voltage; for example, a 100mV increase from 2.20V to 2.30V increases the current approximately tenfold.

What is the maximum Drain-Source voltage rating?

The maximum Drain-Source voltage (VDS) rating is 10.6V.