ALD910017SALI

Special Purpose Overview

The ALD910017SALI is a dual-channel N-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 a precision factory-trimmed gate threshold voltage of 1.70V at an output current of 1µA. It operates within a temperature range of -40°C to +85°C and is housed in an 8-pin SOIC package.

Special Purpose Feature Summary

• Precision factory trimming ensures accurate gate threshold voltage for reliable balancing
• Exponential variable resistance automatically regulates leakage currents across cells
• Near-zero additional leakage currents minimize power dissipation below rated voltages
• Always active with fast response time for continuous voltage protection

Special Purpose Applications

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

Special Purpose Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature range (-40°C to +85°C). Confirm the 'L' suffix denotes lead-free compliance. Ensure the 8-pin SOIC package matches the design footprint. Cross-reference the datasheet version for any updates to electrical characteristics before finalizing procurement.

Special Purpose Selection Notes

Select this component when balancing two series-connected supercapacitors requiring precise voltage regulation. The dual-channel configuration simplifies circuit design compared to discrete solutions. Consider the exponential current response for applications needing minimal power consumption at low voltages. Verify that the maximum operating current and breakdown voltage meet the stack requirements.

Special Purpose Part Context

This part belongs to the ALD9100xx family of SAB™ MOSFETs, designed specifically for supercapacitor balancing. It complements the quad-channel ALD810017 variant. The family addresses the critical need for passive, automatic balancing in high-voltage supercapacitor stacks without complex active control circuits.

Special Purpose Replacement Considerations

ALD910017SAL is the commercial temperature grade equivalent.