ALD910020SAL

Special Purpose Overview

The ALD910020SAL is a dual N-channel Supercapacitor Auto Balancing (SAB) MOSFET array manufactured by Advanced Linear Devices. It operates within a supply voltage range of 0V to +15.0V and features a Drain-Source Breakdown Voltage of 10.6V. The device supports an operating current up to 80mA with a maximum power dissipation of 500mW. It utilizes EPAD technology to provide precise gate threshold voltages, typically 2.00V at 1µA, enabling exponential leakage current balancing for series-connected supercapacitors.

Special Purpose Feature Summary

• Precision factory-trimmed gate threshold voltage enables automatic regulation and balancing of leakage currents across series-connected supercapacitors.
• Exponential output current response to input voltage variations allows effective charge-balancing with near-zero additional leakage currents below rated thresholds.
• Dual-channel configuration designed specifically for balancing two-cell series-connected supercapacitor stacks.

Special Purpose Applications

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

Special Purpose Procurement Notes

Verify the specific suffix 'L' indicates lead-free (RoHS) compliance when ordering. Confirm the package type matches the required pinout, as the SAL variant denotes an 8-pin SOIC package. Ensure the operating temperature range aligns with the commercial specification (0°C to +70°C). Cross-reference the datasheet version to confirm electrical characteristics match the intended design requirements.

Special Purpose Selection Notes

Select this component for applications requiring automatic balancing of exactly two series-connected supercapacitors. The dual-channel architecture simplifies circuit design compared to discrete solutions. Consider the industrial grade variant if operation below 0°C is required. Verify that the maximum drain-source voltage of 10.6V accommodates the individual supercapacitor voltage limits in the stack.

Special Purpose Part Context

This device belongs to the ALD9100xx family of SAB MOSFET arrays, which are part of the broader ALD8100xx/ALD9100xx product line. These components utilize production-proven EPAD technology to address voltage and leakage-current balancing challenges in supercapacitor stacks. The family includes quad-channel variants for larger stacks, offering scalable solutions for energy storage management.

Special Purpose Replacement Considerations

The ALD910020SALI serves as the industrial temperature range replacement for the commercial ALD910020SAL. Both share identical electrical characteristics but differ in operating temperature specifications. No other direct cross-model substitutes are documented in the provided source material.