AP1184K5-25L-U Equivalent & Substitute Parts

Part Overview

The AP1184K5-25L-U is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 2.5V output at 4A maximum current in a TO-263-5 surface mount package. This device is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The regulator incorporates over-current and over-temperature protection features suitable for power management applications requiring stable low-voltage rails.

Substiute Parts

AP1184K5-25L-U

Diodes IncorporatedIn Stock: 1610AP1184K5-25L-U Datasheet

Current PartRFQ

MIC39501-2.5WU

Microchip TechnologyIn Stock: 990MIC39501-2.5WU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP1184K5-25L-U is determined by the following critical parameters:

• Fixed output voltage of 2.5V
• TO-263-5 package compatibility (mechanical and thermal interface)
• Maximum input voltage rating of 16V or greater
• Surface mount configuration
• Over-current and over-temperature protection capability

The MIC39501-2.5WU qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The substitute maintains identical output voltage specification, compatible package footprint, and equivalent protection features while offering enhanced performance characteristics in specific areas.

Parameter Comparison

Engineering Selection Recommendations

The MIC39501-2.5WU is suitable for direct replacement of the AP1184K5-25L-U in applications requiring a 2.5V fixed output linear regulator. Both devices share identical output voltage specification, package footprint, and maximum input voltage rating. The substitute device is currently in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete AP1184K5-25L-U.

The MIC39501-2.5WU provides improved performance through lower dropout voltage (0.575V versus 0.85V) and higher output current capability (5A versus 4A), with additional reverse polarity protection. The extended operating temperature range (-40°C to 125°C versus 0°C to 125°C) accommodates wider environmental conditions. Both devices maintain ROHS3 compliance and equivalent regulatory status.

Frequently Asked Questions (FAQ)

Q: Can the MIC39501-2.5WU directly replace the AP1184K5-25L-U without PCB modifications?

A: Yes. Both devices use identical TO-263-5 package footprints and pinouts, allowing direct PCB substitution without layout changes.

Q: What is the significance of the higher 5A output current rating on the MIC39501-2.5WU?

A: The MIC39501-2.5WU supports up to 5A output current, exceeding the AP1184K5-25L-U specification of 4A. Applications drawing 4A or less operate within the substitute's rated specifications. Applications requiring current between 4A and 5A benefit from the additional headroom.

Q: How does the lower dropout voltage of the MIC39501-2.5WU affect system design?

A: Lower dropout voltage (0.575V versus 0.85V) reduces power dissipation and heat generation at equivalent load currents, improving thermal performance and potentially allowing operation with lower input voltages in margin-constrained applications.

Q: Are there temperature range considerations for substitution?

A: The MIC39501-2.5WU operates from -40°C to 125°C, extending the lower temperature limit compared to the AP1184K5-25L-U (0°C to 125°C). Applications operating above 0°C encounter no temperature-related constraints.

Q: Do both devices provide equivalent protection features?

A: Both devices include over-current and over-temperature protection. The MIC39501-2.5WU adds reverse polarity protection, providing enhanced circuit protection without compromising compatibility.

Q: What is the compliance status of both devices?

A: Both the AP1184K5-25L-U and MIC39501-2.5WU are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements for industrial and commercial applications.