NJM7818FA

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The NJM7818FA is a monolithic 3-terminal positive voltage regulator from the NJM7800 series, manufactured by Nisshinbo Micro Devices using planar epitaxial process technology. It provides a fixed output voltage of 18V with a guaranteed maximum output current of 1.5A. The device operates within an input voltage range of 21V to 40V and supports an operating temperature range of -40°C to +85°C. Key electrical characteristics include a typical quiescent current of 4.5mA and a ripple rejection ratio of 69dB at 120Hz. The component is housed in a TO-220F package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Incorporates internal short-circuit current limiting, thermal shutdown, and safe-area compensation for robust operation.
• Utilizes bipolar technology to deliver high output current capability suitable for local on-card regulation.
• Designed as a fixed voltage regulator to eliminate distribution problems associated with single-point regulation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Local (on-card) voltage regulation
• Elimination of distribution problems in power systems
• General electronic equipment

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the NRND status before procurement, as this product is designated Not Recommended for New Designs. Confirm that the TO-220F package aligns with your board layout requirements. Ensure adequate heat sinking is provided to maintain performance within the specified junction temperature limits during operation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a stable 18V supply is required with up to 1.5A load capacity. Consider the thermal resistance characteristics of the TO-220F package for your specific application environment. Verify that the input voltage remains within the 21V to 40V range to ensure proper regulation and prevent damage.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the NJM7800 series of 3-terminal positive voltage regulators. The series includes various fixed output voltages ranging from 5V to 24V. The NJM7818FA specifically targets applications requiring an 18V output. Other variants in the series share similar protection features and construction technologies.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for alternative parts from the same NJM7800 series if different output voltages are needed. Consult Nisshinbo Micro Devices sales representatives for potential substitute components or updated design recommendations due to the NRND status.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the current status of the NJM7818FA?

The NJM7818FA is designated as an NRND (Not Recommended for New Designs) product.

What protection features does the NJM7818FA include?

It includes internal short-circuit current limiting, thermal shutdown, and safe-area compensation.