LM1086R-ADJ

Overview

The LM1086R-ADJ is a low dropout three-terminal positive voltage regulator manufactured by TAEJIN, offering a maximum output current of 1.5A. It features an adjustable output voltage set via an external resistor divider and includes internal thermal and current limiting for overload protection. The device operates with a maximum supply voltage of 15V and maintains a typical reference voltage of 1.25V. Designed for surface mount applications, it utilizes the TO-263-3L package to ensure efficient heat dissipation in compact power supply designs.

Feature Summary

• Adjustable output voltage configuration using external resistors
• Integrated thermal shutdown and current limiting protection
• Low dropout voltage performance at full load capacity
• Fast transient response suitable for microprocessor applications

Applications

• Battery charger circuits
• Adjustable linear power supplies
• Constant current regulators
• Portable instrumentation systems
• SMPS post-regulator stages

Procurement Notes

Verify that the component matches the specific manufacturer designation provided in the source documentation. Confirm the package type corresponds to the required PCB footprint. Ensure the ordering suffix aligns with the requested reel and tape packaging format. Cross-reference the absolute maximum ratings against the target application environment to prevent operational exceedance.

Selection Notes

Select this regulator when a stable 1.5A output is required with minimal voltage drop across the device. The TO-263-3L package facilitates effective thermal management compared to smaller form factors. Verify that the input-to-output differential remains within the specified limits to maintain regulation accuracy and prevent excessive power dissipation during continuous operation.

Part Context

This component belongs to the LM1086 series of low dropout linear regulators. It shares functional similarities with industry-standard three-terminal adjustable regulators but offers improved reference tolerance and stability. The series supports both fixed and adjustable output versions, providing flexibility for various voltage requirements in portable and high-efficiency electronic systems.

Replacement Considerations

LM1086RS-ADJ (TO-252-3L variant)

FAQ

What is the maximum supply voltage for the LM1086R-ADJ?

The maximum supply voltage (VIN) is rated at 15V.

Does the LM1086R-ADJ require protection diodes between pins?

Internal resistors limit current paths, so protection diodes are generally not needed under normal operation or short-circuit conditions.

How is the output voltage adjusted?

The output voltage is set using an external resistor divider connected between the output and adjustment terminals.