ALD910023SALI

Special Purpose Overview

The ALD910023SALI is a dual Supercapacitor Auto Balancing (SAB™) MOSFET array manufactured by Advanced Linear Devices, Inc. utilizing EPAD® technology. It balances up to two series-connected supercapacitors via precision gate threshold voltage characteristics. The device operates within a supply voltage range of 0V to +15.0V and features an operating temperature range of -40°C to +85°C for the SALI suffix. Key electrical parameters include a typical gate threshold voltage of 2.30V at 1µA drain-source current, a maximum drain-source breakdown voltage of 10.6V, and a maximum operating current of 80mA.

Special Purpose Feature Summary

• Automatically regulates and balances leakage currents across series-connected supercapacitors
• Precision factory trimmed gate threshold voltage ensures accurate balancing
• Exponential output current response to input voltage variations
• Near-zero additional leakage currents below rated voltages

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
• Scaled supercapacitor stacks and arrays

Special Purpose Procurement Notes

Verify the specific ordering suffix 'L' indicates lead-free compliance per RoHS standards. Confirm the 'I' suffix corresponds to the industrial temperature range of -40°C to +85°C. Ensure the package type matches the 8-pin SOIC configuration required for the application. Cross-reference the datasheet version to confirm alignment with the latest technical specifications before finalizing procurement orders.

Special Purpose Selection Notes

Select this component when balancing exactly two supercapacitors in series. The ALD910023 family provides distinct precision characteristics compared to the quad ALD810023 variant. Verify that the maximum supercapacitor leakage current limit aligns with the device's output current capabilities. Ensure the operating environment falls within the specified commercial or industrial temperature ranges defined by the package suffix.

Special Purpose Part Context

This part belongs to the ALD9100xx family of SAB™ MOSFET arrays designed for automatic supercapacitor balancing. It utilizes production-proven EPAD® CMOS technology to address voltage and leakage-current balancing issues in series-connected capacitor stacks. The device integrates precision gate threshold voltage characteristics to function as an effective variable resistor dependent on input voltage.

Special Purpose Replacement Considerations

The ALD810023 serves as a quad-channel alternative for balancing up to four supercapacitors. Direct substitution requires verifying pinout compatibility and ensuring the application does not exceed the dual-channel capacity of the ALD910023. Check datasheet specifications for offset voltage and temperature coefficients to ensure performance parity.

Special Purpose FAQ

How does the ALD910023SALI balance supercapacitor voltages?

It functions as an effective variable resistor connected across each supercapacitor. The output current increases exponentially with the input voltage, automatically shunting excess charge from cells with higher voltages to maintain balance.

What is the significance of the 2.30V gate threshold voltage?

At an input voltage of 2.30V, the device conducts a reference current of 1µA. This precise threshold allows the circuit to regulate supercapacitor charging levels effectively, with current increasing tenfold for every 100mV increase above this point.

What is the maximum supply voltage for the ALD910023SALI?

The absolute maximum rating for the V+ to V- voltage is 15.0V. The Drain-Source voltage (VDS) and Gate-Source voltage (VGS) are also limited to a maximum of 10.6V.