ALD810028SCL

Special Purpose Overview

The ALD810028SCL is a quad 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. The device features four precision gate threshold voltages set at 2.80V when the drain-source current is 1µA. It operates within a supply voltage range of up to 15.0V and supports an operating current of 80mA with a power dissipation limit of 500mW. The component is housed in a 16-pin SOIC package and functions within a commercial temperature range of 0°C to +70°C.

Special Purpose Feature Summary

• Precision factory-trimmed gate threshold voltages for accurate balancing
• Exponential output current response to input voltage changes
• Near-zero additional leakage currents below rated thresholds
• Active regulation of cell voltages without external control

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
• Scaled supercapacitor stacks and arrays

Special Purpose Procurement Notes

Verify the specific ordering suffix 'L' indicates lead-free compliance per RoHS standards. Confirm the package type matches the required board layout, as this variant uses a 16-pin SOIC configuration. Ensure the application environment remains within the specified commercial temperature limits of 0°C to +70°C. Cross-reference the datasheet revision date to confirm the technical specifications align with current manufacturing standards.

Special Purpose Selection Notes

Select the ALD810028SCL when balancing up to four supercapacitors in a series stack. This quad configuration is appropriate for applications requiring precise voltage matching across multiple cells. Consider the industrial temperature variant if operation extends below 0°C. Evaluate the maximum supercapacitor leakage current against the device's output current capabilities to ensure effective balancing performance.

Special Purpose Part Context

This component belongs to the ALD8100xx family of SAB™ MOSFETs designed for automatic supercapacitor balancing. It shares architectural similarities with the dual-channel ALD910028 but provides four independent balancing channels. The technology relies on production-proven EPAD® processes to achieve high precision and low leakage characteristics essential for energy storage management.

Special Purpose Replacement Considerations

The ALD810028SCLI serves as the industrial temperature grade replacement for this part number. Verify pin compatibility and thermal requirements before substituting between commercial and industrial variants.

Special Purpose FAQ

How does the output current change with input voltage?

The output current increases exponentially with the input voltage; a 100mV increase from the threshold results in approximately a tenfold increase in current.

What is the function of the internal IC pins?

The IC pins are internally connected and should be connected to the V- terminal to complete the circuit configuration.

At what voltage does the device dissipate essentially no power?

When the input voltage is less than 2.60V, the device dissipates essentially no power.