RT9818A-30GB

Supervisors Overview

The RT9818A-30GB 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 of 3.0V with ±1.5% accuracy. The device features a low supply current of 3μA and operates within a functional supply voltage range starting from 0.9V. It utilizes an N-channel open-drain output to signal reset conditions when the input voltage falls below the preset threshold. The component is housed in a SOT-23-3 package and includes built-in recovery delay options.

Supervisors Feature Summary

• Provides micro-power supervision for digital system voltage levels
• Features internally fixed threshold levels without external components
• Includes built-in recovery delay for stable reset signaling
• Utilizes N-channel open-drain output for interface flexibility

Supervisors Applications

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

Supervisors Procurement Notes

Verify the specific suffix 'G' corresponds to the halogen-free and lead-free green plating specification as defined in the manufacturer's ordering information. Confirm that the 'B' suffix aligns with the SOT-23-3 package type required for your design. Ensure the threshold code matches the 3.0V requirement indicated by the part number structure. Cross-reference the datasheet revision date to confirm compatibility with current environmental compliance standards.

Supervisors Selection Notes

Select this component when designing circuits requiring precise voltage supervision with minimal quiescent current consumption. The 3.0V threshold is suitable for standard logic families operating at or near this voltage level. Consider the built-in recovery delay features if noise immunity during power-up sequences is critical. The SOT-23-3 package offers a compact footprint ideal for space-constrained portable applications.

Supervisors Part Context

The RT9818 series consists of micro-power voltage detectors designed for supervising power supplies in digital systems. This family provides various threshold options ranging from 1.2V to 5V in 0.1V steps. The RT9818A variant specifically denotes enhanced performance characteristics within this line. These devices are commonly used in consumer electronics and industrial equipment where reliable power monitoring is essential for system stability.

Supervisors Replacement Considerations

Compatible substitutes include other parts from the RT9818 family with matching thresholds and packages, such as RT9818A-30GY or RT9818A-30GU3. Verify pinout compatibility and electrical specifications before substitution.