FAN1084MCX

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

The FAN1084MCX is a linear low-dropout (LDO) voltage regulator manufactured by onsemi. It provides a fixed output voltage of 3.3V with a maximum continuous output current capability of 4.5A. The device utilizes a TO-252AA surface-mount package, specifically the DPAK form factor, designed for efficient thermal dissipation in compact designs. It operates within an input voltage range that supports regulation down to a low dropout voltage, ensuring stable performance under varying load conditions.

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

• High current delivery capability suitable for powering digital logic and microprocessors
• Low dropout operation minimizes power loss and heat generation during regulation
• Integrated protection mechanisms safeguard against thermal overload and short circuits

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

• Power supply stages for field-programmable gate arrays (FPGAs)
• Voltage regulation for central processing units (CPUs) and memory modules
• General-purpose low-noise power distribution in embedded systems

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

Verify the specific suffix code to confirm the fixed output voltage variant, as the FAN1084 series includes adjustable and other fixed voltage options. Confirm the package type matches the required PCB footprint. Check current availability status as this component may be subject to end-of-life notices or limited stock depending on the distributor. Ensure compliance with RoHS directives if required for the target market.

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

Select this component when a high-current, fixed 3.3V rail is required from a higher input voltage source. Consider the thermal resistance of the TO-252AA package and the expected ambient temperature to ensure adequate heat sinking or copper pour area is available. Compare dropout voltage specifications against the minimum input voltage to maintain regulation margin. Evaluate alternative packages if space constraints differ from the DPAK footprint.

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

The FAN1084 belongs to onsemi's family of high-performance LDO regulators designed for demanding applications requiring significant current drive. It complements lower-current variants in the lineup, offering a balance between efficiency and cost for mid-power digital circuits. The series is engineered for stability with various capacitor types, simplifying design implementation.

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

Direct pin-to-pin replacements should be verified against the datasheet for equivalent current ratings and output voltage accuracy. Alternative manufacturers may offer similar TO-252AA LDOs, but thermal characteristics and transient response must be compared. Ensure any substitute maintains the same fixed 3.3V output specification.