MIC5259-2.8BD5-TR Equivalent & Substitute Parts

Part Overview

The MIC5259-2.8BD5-TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed 2.8V output applications with 300mA current capacity in a TSOT-23-5 surface mount package. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design requirements and production continuity. The device provides regulated power management with integrated protection features including over-current, over-temperature, and under-voltage lockout functionality.

Substiute Parts

MIC5259-2.8BD5-TR

Microchip TechnologyIn Stock: 1133MIC5259-2.8BD5-TR Datasheet

Current PartRFQ

TC2015-2.8VCTTR

Microchip TechnologyIn Stock: 1542TC2015-2.8VCTTR Datasheet

MFR RecommendedRFQ

TC2185-2.8VCTTR

Microchip TechnologyIn Stock: 16756TC2185-2.8VCTTR Datasheet

MFR RecommendedRFQ

ADP122AUJZ-2.8-R7

Analog Devices Inc.In Stock: 1490ADP122AUJZ-2.8-R7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MIC5259-2.8BD5-TR is determined by the following critical parameters: fixed 2.8V output voltage, TSOT-23-5 package compatibility, positive output configuration, surface mount mounting type, and operating temperature range of -40°C to 125°C. Substitute parts must maintain these core specifications to ensure direct functional replacement.

Two substitution categories are identified:

MFR Recommended Substitutes (Microchip Technology): TC2185-2.8VCTTR and TC2015-2.8VCTTR maintain the same manufacturer ecosystem, output voltage, package type, and temperature range. These parts differ in output current capacity and dropout voltage characteristics.

Parametric Equivalent (Analog Devices Inc.): ADP122AUJZ-2.8-R7 provides equivalent output voltage, current capacity, package type, and temperature range from an alternative manufacturer, offering cross-platform design flexibility.

Parameter Comparison

Engineering Selection Recommendations

TC2185-2.8VCTTR is the primary MFR recommended substitute for applications requiring 150mA or less output current. This part maintains Microchip Technology manufacturer continuity, is RoHS3 compliant, and is actively produced with high inventory availability (16,653 pcs). The reduced dropout voltage (0.21V @ 150mA) and lower quiescent current (80 µA) provide improved efficiency compared to the original part.

TC2015-2.8VCTTR serves as an alternative for applications with 100mA or lower current requirements. This part offers the lowest dropout voltage (0.14V @ 100mA) and lowest quiescent current (80 µA) among all substitutes, optimizing for low-power designs. RoHS3 compliance and active production status support long-term availability.

ADP122AUJZ-2.8-R7 is the parametric equivalent for designs requiring full 300mA output current capacity matching the original part. This Analog Devices part maintains identical output current and voltage specifications, includes under-voltage lockout protection, and is RoHS3 compliant. The lower maximum input voltage (5.5V vs 6V) and improved dropout voltage (0.15V @ 300mA) provide enhanced performance characteristics. Selection of this part introduces a secondary manufacturer into the supply chain.

All three substitutes maintain the required TSOT-23-5/SOT-23-5 package compatibility, surface mount mounting type, and -40°C to 125°C operating temperature range. Selection should be based on specific output current requirements and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can TC2185-2.8VCTTR directly replace MIC5259-2.8BD5-TR in all applications?

A: TC2185-2.8VCTTR is suitable for applications requiring 150mA or less output current. If your design requires the full 300mA output current of the original part, this substitute is not appropriate. For 150mA applications, the improved dropout voltage and quiescent current provide performance benefits.

Q: What is the difference between TC2015-2.8VCTTR and TC2185-2.8VCTTR?

A: Both parts are Microchip Technology linear regulators with 2.8V fixed output and TSOT-23-5 packaging. TC2015-2.8VCTTR is rated for 100mA maximum output current with 0.14V dropout voltage, while TC2185-2.8VCTTR is rated for 150mA maximum output current with 0.21V dropout voltage. Selection depends on your circuit's current requirements.

Q: Why is ADP122AUJZ-2.8-R7 listed as a parametric equivalent rather than MFR recommended?

A: ADP122AUJZ-2.8-R7 is from Analog Devices Inc., a different manufacturer than the original Microchip Technology part. While it provides equivalent electrical performance and package compatibility, using a different manufacturer may require additional qualification and introduces secondary source considerations into your supply chain.

Q: Are all substitute parts RoHS compliant?

A: TC2185-2.8VCTTR, TC2015-2.8VCTTR, and ADP122AUJZ-2.8-R7 are all RoHS3 compliant. The original MIC5259-2.8BD5-TR is RoHS non-compliant. If RoHS compliance is required for your application, all listed substitutes meet this requirement.

Q: What is the package difference between TSOT-23-5 and SOT-23-5?

A: TSOT-23-5 and SOT-23-5 refer to the same physical package footprint (SC-74A, SOT-753). Both are 5-pin surface mount packages with identical pin configurations and PCB land patterns, ensuring direct mechanical and electrical compatibility.

Q: Which substitute should I select for a new design?

A: For new designs requiring 300mA output current, select ADP122AUJZ-2.8-R7 for equivalent performance or TC2185-2.8VCTTR if output current can be limited to 150mA. Both are actively produced with strong inventory availability and RoHS3 compliance. For designs with lower current requirements (100mA or less), TC2015-2.8VCTTR offers the best efficiency characteristics.