RT9818B-35GB

Supervisors Overview

The RT9818B-35GB is a micro-power voltage detector manufactured by Richtek Technology Corporation. It supervises power supply voltage levels for microprocessors and digital systems, providing an internally fixed threshold level of 3.5V with a high accuracy of ±1.5%. The device features a low supply current of 3μA and operates within a functional supply voltage range starting from 0.9V. It includes a built-in recovery delay option and utilizes an N-channel open-drain output. The component is available in small packages such as SOT-23-3.

Supervisors Feature Summary

• Provides micro-power supervision for digital system voltage levels
• Features internally fixed threshold levels with high accuracy
• Includes built-in recovery delay options for stable reset signals
• Operates with low functional supply voltage requirements

Supervisors Applications

• Microprocessor power supply monitoring
• Digital system voltage supervision
• Battery-powered device power management

Supervisors Procurement Notes

Verify the specific suffix 'GB' against official Richtek documentation to confirm package type and tape/reel specifications. Confirm availability status as some variants may be end-of-life. Ensure compatibility with existing PCB footprint and design-in requirements before procurement.

Supervisors Selection Notes

Select this component when a fixed 3.5V threshold is required for voltage supervision. Consider the 3μA quiescent current for battery-sensitive applications. Verify that the N-channel open-drain output configuration matches the system logic interface requirements.

Supervisors Part Context

The RT9818 series consists of micro-power voltage detectors designed for supervising power supplies in portable and digital electronics. This part belongs to a family offering various fixed threshold voltages from 1.2V to 5V in 0.1V steps, allowing designers to choose precise trip points without external components.

Supervisors Replacement Considerations

Compatible substitutes include other RT9818 variants with different threshold voltages or package types, provided the electrical characteristics match the application requirements.