FAN1086M285X

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

The FAN1086M285X is a fixed-output low dropout linear regulator manufactured by onsemi. It provides a stable 2.85V output with a maximum continuous current capability of 1.5A. The device features a typical dropout voltage of 1.3V at full load and supports an input voltage range up to 7.5V. Integrated protection mechanisms include thermal limiting and trimmed current limit control to ensure safe operation under overload conditions. The component is housed in a surface-mount D2PAK-3 (TO-263-3) package, designed for efficient heat dissipation in compact power supply applications.

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

• Provides a fixed 2.85V output voltage optimized for specific bus termination requirements
• Delivers high output current capability of 1.5A with low dropout characteristics
• Includes on-chip thermal limiting protection against excessive junction temperatures
• Features trimmed current limit to manage short-circuit and overload scenarios

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

• Active terminators for SCSI bus systems
• Post-regulator stages in microprocessor power supplies
• Low voltage transient response critical circuits
• General purpose linear regulation where 2.85V is required

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

Verify the exact suffix M285X confirms the 2.85V fixed output variant. Confirm the D2PAK-3 package type matches the target PCB footprint. Check manufacturer documentation for RoHS compliance status and lead time requirements. Ensure thermal management design accounts for the 1.5A current rating and ambient operating temperature limits specified in the datasheet.

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

Select this component when a precise 2.85V rail is needed for legacy or specific interface standards like SCSI. Choose over adjustable regulators if board space for external resistors is limited and the fixed voltage meets system requirements. Consider the thermal performance of the TO-263 package relative to the expected power dissipation at 1.5A load.

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

This part belongs to the FAN1086 family of low dropout linear regulators from onsemi. The family includes adjustable versions and other fixed voltage options such as 2.5V, 3.3V, and 5.0V. All variants share similar internal architectures featuring thermal protection and high current drive capabilities, differing primarily in output voltage settings and specific application optimizations.

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

Direct substitutes within the same family include FAN1086M25X (2.5V), FAN1086M33X (3.3V), and FAN1086M50X (5.0V). Cross-brand replacements require matching the 1.5A current rating, 2.85V output, and D2PAK-3 package. Verify pinout compatibility and thermal resistance specifications before substituting.