ALD810020SCL

Special Purpose Overview

The ALD810020SCL is a quad 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 (BVDSX) of 10.6V. The device supports an operating current up to 80mA with a maximum power dissipation of 500mW. It utilizes eEPAD technology to provide precise gate threshold voltages, typically 2.00V at 1µA, enabling exponential leakage current balancing across series-connected supercapacitors.

Special Purpose Feature Summary

• Precision factory-trimmed gate threshold voltage for accurate voltage regulation
• Exponential output current response to input voltage changes
• Near-zero additional leakage currents when below rated thresholds
• Integrated active balancing without external control circuitry

Special Purpose Applications

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

Special Purpose Procurement Notes

Verify the specific suffix 'L' indicates lead-free RoHS compliance as defined in the ordering information. Confirm the package type matches the required pin configuration for your PCB layout. Ensure the operating temperature range aligns with your commercial or industrial environment specifications before finalizing procurement.

Special Purpose Selection Notes

Select this component when balancing up to four supercapacitors in series using a single integrated circuit. Consider the ALD910020 family member if only two channels are required. Evaluate the specific gate threshold voltage tolerance and offset characteristics against your system's leakage current limits and operating temperature requirements.

Special Purpose Part Context

This part belongs to the ALD8100xx/ALD9100xx family of SAB MOSFET arrays designed for automatic supercapacitor balancing. It leverages Advanced Linear Devices' proprietary eEPAD technology to create matched pairs of MOSFETs with precise electrical characteristics, distinguishing it from standard discrete transistors used in manual balancing circuits.

Special Purpose Replacement Considerations

Direct substitutes include other members of the ALD8100xx family, such as the ALD810016SCL or ALD810019SCL, which offer different precision operating voltage characteristics. Verify that any replacement maintains the same quad channel configuration and SOIC-16 package dimensions.

Special Purpose FAQ

How does the ALD810020SCL regulate supercapacitor voltage?

It acts as a variable resistor where the drain-source resistance decreases exponentially as the input voltage increases above the 2.00V threshold, shunting excess current to balance the stack.

What is the maximum supply voltage for this device?

The absolute maximum rating for the V+ to V- voltage is 15.0V.

Does the device require external components for operation?

No, the SAB MOSFETs are always active and automatically regulate leakage currents without needing external control circuitry or timing components.