RE46C108E8F

Sensor And Detector Interfaces Overview

The RE46C108E8F is a piezoelectric horn driver integrated with a voltage regulator, designed for applications requiring a 9V horn driver supply alongside a low-voltage logic rail. It operates within a supply voltage range of 6.0V to 13.8V and features selectable output regulation at either 3.3V or 5V via the REGSEL pin. The device supports self-oscillating piezoelectric horns through its feedback control pin and includes a charge pump enable function to minimize standby current. Electrical characteristics include a typical standby supply current of 4µA and continuous output currents of 30mA for horn drivers and 55mA for the regulator output.

Sensor And Detector Interfaces Feature Summary

• Integrated voltage regulator providing selectable 3.3V or 5V output rails for logic circuits
• Optimized for driving self-oscillating piezoelectric horns with dedicated feedback control
• Low quiescent current consumption suitable for battery-powered alarm systems
• Charge pump enable capability to reduce power usage during inactive periods

Sensor And Detector Interfaces Applications

• Smoke detectors
• Carbon monoxide (CO) detectors
• Personal security products
• Electronic toys

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix E8F against the manufacturer's official documentation to confirm package type and compliance status. Ensure that the ordering information matches the required RoHS compliant Pb Free packaging specifications. Confirm availability and lead times directly with authorized distributors prior to finalizing procurement plans.

Sensor And Detector Interfaces Selection Notes

Select this component when a combined horn driver and regulated logic supply is required in a single package. Verify that the operating temperature range of -40°C to +85°C meets environmental requirements. Ensure the input voltage stays within the 6.0V to 13.8V limit and that the load does not exceed the 30mA horn or 55mA regulator current ratings.

Sensor And Detector Interfaces Part Context

The RE46C108 belongs to the R&E International family of piezoelectric horn drivers now under Microchip Technology. This series focuses on low-power audio signaling solutions for safety and consumer electronics. The E8F designation typically indicates a specific surface-mount or through-hole variant within the broader RE46C108 product line.

Sensor And Detector Interfaces Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the RE46C10x series. Verify functional equivalence regarding regulator voltage selection and horn drive capabilities before substituting.