FAN1086M33X

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

The FAN1086M33X is a fixed-output Low Dropout (LDO) linear regulator manufactured by Fairchild Semiconductor. It provides a stable 3.3V output with a maximum continuous current capability of 1.5A. The device utilizes a TO-263-3 surface-mount package, also known as D2PAK-3, designed for efficient thermal dissipation in compact designs. Key electrical characteristics include a typical dropout voltage of 1.5V at full load and a quiescent current of approximately 10mA. The regulator incorporates on-chip thermal limiting and current limit protection to ensure reliability under overload conditions.

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

• Fixed 3.3V output voltage configuration
• Integrated thermal limiting protection
• Trimmed current limit for short-circuit safety

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

• Low voltage microprocessor power supplies
• Active terminators for SCSI bus applications
• Battery-powered circuitry
• Post-regulation for switching power supplies

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

Verify the manufacturer status, as Fairchild Semiconductor's semiconductor division has undergone corporate restructuring. Confirm whether the component is sourced from the current entity, such as onsemi, or if it is an obsolete part requiring lifecycle assessment. Ensure the datasheet matches the specific suffix M33X to confirm the 3.3V fixed output variant.

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

Select this component when a stable 3.3V rail is required with up to 1.5A load current. It is suitable for applications where low noise and fast transient response are critical. Consider the TO-263-3 package for its balance of current handling and board space efficiency compared to smaller SOT packages.

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

This part belongs to the FAN1086 series of three-terminal adjustable and fixed LDO regulators. The series is optimized for low-voltage applications where minimizing the input-to-output voltage differential is essential. It serves as a complement to other regulators in the family offering different current ratings or adjustable output configurations.

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

Direct substitutes include the LM1086ISX-3.3/NOPB from Texas Instruments and the LD1086DT33TR from STMicroelectronics. Verify pinout compatibility and thermal performance specifications before substitution.