RE46C117S8TF

Sensor And Detector Interfaces Overview

The RE46C117S8TF is a DC-to-DC converter and piezoelectric horn driver designed for 3V or 4.5V battery applications. It integrates a 10V up-converter with low quiescent current operation, featuring standby supply current of 14µA and typical quiescent supply current of 7µA. The device operates within a supply voltage range of 2.0V to 5.0V and supports an operating temperature range of 0°C to 50°C. It provides continuous output currents up to 40mA on the horn drivers and VO pin, with a brownout threshold set between 3.2V and 4.0V.

Sensor And Detector Interfaces Feature Summary

• Integrates a DC-to-DC up-converter suitable for driving piezoelectric horns
• Features low quiescent current consumption for extended battery life
• Includes a dedicated control input (HRNEN) for enabling/disabling the horn driver

Sensor And Detector Interfaces Applications

• Smoke detectors
• CO Detectors
• Personal Security Products
• Electronic Toys

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'S8TF' against the manufacturer's official documentation to confirm packaging details and RoHS compliance status. Ensure that the ordering information matches the exact part number required for your bill of materials, as variations in suffixes may indicate different package types or environmental certifications.

Sensor And Detector Interfaces Selection Notes

Select this component when designing battery-operated alarm systems requiring a piezoelectric sounder. Ensure the external inductor has a peak current rating of at least 1.5A and low DC resistance to support the high boost mode pulses. Verify that the total series resistance from the battery to the LX pin does not exceed 0.3 ohms for proper operation at low voltages.

Sensor And Detector Interfaces Part Context

The RE46C117 belongs to the R&E International family of products acquired by Microchip Technology. This series focuses on low-power analog solutions for consumer safety and security devices. The S8TF designation typically indicates an 8-pin SOIC package with tape-and-reel packaging, distinguishing it from tube-packaged variants.

Sensor And Detector Interfaces Replacement Considerations

Check for direct cross-reference part numbers from Microchip or other manufacturers offering similar piezoelectric horn drivers with integrated DC-DC converters. Ensure any substitute maintains compatible pinouts, voltage ranges, and current capabilities for the specific horn application.