FAN1585AM18X

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

The FAN1585AM18X is a fixed positive low dropout linear regulator manufactured by Fairchild Semiconductor. It provides a fixed output voltage of 1.8 V with a maximum input voltage rating of 18 V and supports up to 5 A load current. The device features a typical dropout voltage of 1.15 V and a maximum dropout voltage of 1.3 V at full load. Electrical performance includes a typical load regulation of 0.05% and a maximum line regulation of 0.0036%. It is housed in a TO-263-3 (D2PAK) plastic package.

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

• Fast transient response capability for dynamic load conditions
• Low dropout voltage operation supporting high efficiency at minimal voltage headroom
• Robust load regulation ensuring stable output under varying current demands

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

• Point-of-load regulation in portable electronic devices
• Power management circuits requiring stable 1.8 V supply rails
• Battery-powered systems utilizing linear regulation for low noise requirements

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

Verify the specific suffix 'M18X' against the manufacturer's official datasheet to confirm the fixed 1.8 V output configuration. Ensure the TO-263-3 package variant matches your PCB footprint requirements. Cross-reference the RoHS compliance status and lead-free marking (JESD-609 code e3) if environmental regulations apply to your assembly process.

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

Select this component when a fixed 1.8 V output is required with high current capacity up to 5 A. Consider the thermal dissipation capabilities of the TO-263-3 package relative to the expected power loss calculated from the input-output voltage differential and load current. Verify that the input voltage remains within the 3.3 V to 18 V operating range to ensure proper regulation and device safety.

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

This part belongs to the FAN1585 series of low dropout regulators designed for applications demanding high current delivery with minimal voltage drop. The series offers both adjustable and fixed output variants, with the M18X designation specifically indicating the fixed 1.8 V version. It is engineered for use in consumer electronics and industrial equipment where space-constrained packaging and efficient power conversion are critical.

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

Consult official substitution guides for equivalents such as the FAN1585AMC18X or other 5A LDOs from onsemi/Fairchild. Verify pinout compatibility and thermal characteristics before replacing.