RE46C119S16F

Sensor And Detector Interfaces Overview

The RE46C119S16F is a CMOS integrated circuit designed for low voltage regulation and high voltage piezoelectric horn driving. It integrates a switched capacitor charge pump boost regulator, a low-dropout voltage regulator, and a horn driver. The device operates on a supply voltage range of 6V to 12V with a maximum quiescent current of 6.5uA when inactive. It provides a regulated 3V output at the VREG pin and boosts the input to approximately 12V at the VPOS pin for horn activation. Key features include low battery detection via the LBAT pin, power good monitoring, and bidirectional interconnect logic through IO1 and IO2 pins.

Sensor And Detector Interfaces Feature Summary

• Integrated 12V boost converter using a charge pump mechanism to drive piezoelectric horns
• Built-in 3V low-dropout voltage regulator with overvoltage clamp protection
• Low battery detection interface providing an analog output proportional to supply voltage
• Bidirectional interconnect logic allowing communication between multiple units

Sensor And Detector Interfaces Applications

• Smoke detectors
• Carbon Monoxide (CO) Detectors
• Personal security products
• Electronic games
• Hand held instruments

Sensor And Detector Interfaces Procurement Notes

Verify the specific package type and RoHS compliance status required for the project before ordering. Confirm that the SMD/SMT packaging aligns with the assembly process. Ensure the minimum order quantities and reel specifications match the manufacturing line capabilities. Cross-reference the datasheet revision to confirm all electrical characteristics remain consistent with the design requirements.

Sensor And Detector Interfaces Selection Notes

Select this component when a combined solution for low-voltage regulation and high-voltage horn driving is needed. It is suitable for battery-operated devices requiring long standby times due to its low quiescent current. Consider the external capacitor requirements for the charge pump and regulator stability during PCB layout. Verify that the operating temperature range meets the environmental conditions of the intended application.

Sensor And Detector Interfaces Part Context

The RE46C119 belongs to the RE46C series of smoke detector ASICs manufactured by Microchip Technology. This series includes various models tailored for different timer modes and sensor interfaces. The RE46C119 specifically focuses on the horn driver and power management aspects, often used in conjunction with photoelectric or ionization smoke sensing elements.

Sensor And Detector Interfaces Replacement Considerations

Direct replacements within the same family may include other RE46C variants with similar horn driver capabilities but different timer configurations. Check datasheets for compatible packages and pinouts. Ensure that any substitute part maintains the same voltage ranges and current capabilities for the boost converter and regulator.