ALD910019SAL

Overview

The ALD910019SAL is a dual Supercapacitor Auto Balancing (SAB) MOSFET array from Advanced Linear Devices, designed for voltage and leakage-current balancing of series-connected supercapacitors. It operates within a V+ to V- range up to 15.0V and features a Drain-Source Breakdown Voltage (BVDSX) of 10.6V. The device has an Operating Current limit of 80mA and Power Dissipation of 500mW. The Gate Threshold Voltage (Vt) is typically 1.90V at IDS(ON) = 1µA. It utilizes EPAD technology and is housed in an 8-Pin SOIC package.

Feature Summary

• Automatically regulates and balances leakage currents across series-connected supercapacitors
• Precision factory trimmed gate threshold voltage with exponential current response
• Near zero additional leakage currents when cell voltages are below rated thresholds
• Always active with fast response time for continuous charge-balancing

Applications

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

Procurement Notes

Verify the specific suffix 'SAL' indicates the commercial temperature range (0°C to +70°C) and lead-free (RoHS) compliance as per the manufacturer's ordering information. Confirm that the application environment remains within these thermal limits. Ensure static control procedures are followed during handling due to ESD sensitivity. Cross-reference the datasheet version to ensure alignment with current specifications.

Selection Notes

Select the ALD910019SAL for applications requiring the balancing of two series-connected supercapacitors. Choose this part over the quad-channel ALD810019 if only two cells require balancing. Verify that the maximum supercapacitor leakage current limit aligns with the device's output current capabilities. Ensure the operating voltage margin accounts for tolerances and temperature effects within the commercial range.

Part Context

This component belongs to the ALD9100xx family of Dual SAB MOSFET arrays, which complements the ALD8100xx Quad family. Both families utilize production-proven EPAD technology to address voltage and leakage-current balancing issues in supercapacitor stacks. The ALD910019 specifically provides unique precision operating characteristics for its two internal devices.

Replacement Considerations

The ALD910019SALI serves as the industrial temperature range (-40°C to +85°C) equivalent. For quad-channel requirements, the ALD810019SAL or ALD810019SCL may be considered depending on channel count needs.