ALD910025SAL

Special Purpose Overview

The ALD910025SAL is a dual-channel Supercapacitor Auto Balancing (SAB) MOSFET array manufactured by Advanced Linear Devices. It utilizes EPAD technology to automatically regulate and balance leakage currents in series-connected supercapacitors, preventing over-voltages. The device features a precision factory-trimmed gate threshold voltage of 2.50V at an output current of 1µA. Its effective resistance varies exponentially with the input voltage, providing active balancing across a wide range. 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 supercapacitors
• Features precision factory-trimmed gate threshold voltage for accurate balancing
• Provides exponential variable resistance characteristic based on cell voltage
• Offers near-zero additional leakage currents when below rated voltages

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 'SAL' corresponds to the 8-pin SOIC package and commercial temperature range (0°C to +70°C). Confirm that the 'L' suffix indicates lead-free compliance if required by your assembly specifications. Ensure the application environment remains within the specified absolute maximum ratings, particularly regarding drain-source voltage limits and power dissipation constraints during operation.

Special Purpose Selection Notes

Select this component for applications requiring automatic balancing of two series-connected supercapacitors. The dual-channel architecture simplifies circuit design compared to discrete solutions. Consider the exponential current response characteristics when determining the maximum allowable leakage current limit for the supercapacitors in the stack. Verify that the operating voltage margin accounts for temperature effects and tolerances to ensure adequate performance in the intended environment.

Special Purpose Part Context

This part belongs to the ALD9100xx family of SAB MOSFETs, designed specifically for addressing voltage and leakage-current balancing issues in supercapacitor stacks. Unlike the quad-channel ALD810025, this dual-channel variant is optimized for smaller stacks. The technology relies on production-proven EPAD manufacturing processes to achieve high precision and low leakage characteristics essential for reliable long-term energy storage management.

Special Purpose Replacement Considerations

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