ALD910021SAL

Special Purpose Overview

The ALD910021SAL is a dual-channel Supercapacitor Auto Balancing (SAB™) MOSFET array manufactured by Advanced Linear Devices, Inc. using EPAD® technology. It is designed for voltage and leakage-current balancing of series-connected supercapacitors. The device features a precision gate threshold voltage of 2.10V at an output current of 1µA. Its effective resistance varies exponentially with the input voltage applied across the supercapacitor cells. The component operates within a supply voltage range up to 15.0V and supports an operating temperature range from 0°C to +70°C.

Special Purpose Feature Summary

• Automatically regulates and balances leakage currents in series-connected supercapacitor stacks
• Features precision factory-trimmed gate threshold voltages for accurate cell balancing
• Provides near-zero additional leakage currents when connected across supercapacitors
• Offers fast response time and active operation without external circuit design requirements

Special Purpose Applications

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

Special Purpose Procurement Notes

Verify the specific ordering suffix 'L' indicates lead-free compliance with RoHS standards. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range aligns with the intended commercial environment specifications.

Special Purpose Selection Notes

Select this component for applications requiring automatic balancing of two series-connected supercapacitors. Consider the exponential current-voltage characteristic for precise control over cell voltages. Evaluate the maximum drain-source breakdown voltage against the stack requirements.

Special Purpose Part Context

This part belongs to the ALD8100xx/ALD9100xx family of SAB™ MOSFET arrays. While the ALD810021 provides four balanced channels, the ALD910021 offers two channels specifically for smaller supercapacitor stacks. Both utilize production-proven EPAD® technology for high precision and low power consumption.

Special Purpose Replacement Considerations

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