LP3875EMP-5.0 Equivalent & Substitute Parts

Part Overview

The LP3875EMP-5.0 is a linear voltage regulator IC from Texas Instruments, delivering positive fixed 5V output at 1.5A in a SOT-223-5 surface mount package. This device is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part provides integrated protection features including over-current, over-temperature, and short-circuit protection, with an enable control feature for power management applications.

Substiute Parts

LP3875EMP-5.0

Texas InstrumentsIn Stock: 837LP3875EMP-5.0 Datasheet

Current PartRFQ

LP3852EMP-5.0/NOPB

Texas InstrumentsIn Stock: 1856LP3852EMP-5.0/NOPB Datasheet

Parametric EquivalentRFQ

LP3855EMP-5.0/NOPB

Texas InstrumentsIn Stock: 3441LP3855EMP-5.0/NOPB Datasheet

Parametric EquivalentRFQ

LP3855EMPX-5.0/NOPB

Texas InstrumentsIn Stock: 935LP3855EMPX-5.0/NOPB Datasheet

Parametric EquivalentRFQ

LP3872EMP-5.0/NOPB

National SemiconductorIn Stock: 1129LP3872EMP-5.0/NOPB Datasheet

Parametric EquivalentRFQ

LP3875EMP-5.0/NOPB

Texas InstrumentsIn Stock: 2275LP3875EMP-5.0/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP3875EMP-5.0 are selected based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Parameters for Substitution:

• Output voltage: 5V fixed
• Output current: 1.5A
• Input voltage maximum: 7V
• Package type: SOT-223-5 (surface mount)
• Protection features: Over-current, over-temperature, short-circuit
• Control features: Enable function
• Operating temperature range: -40°C ~ 125°C

All substitute parts listed maintain these core electrical specifications and physical package compatibility. Variations in quiescent current, dropout voltage, and product status are noted but do not prevent functional substitution when electrical requirements are met.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: LP3875EMP-5.0/NOPB

The LP3875EMP-5.0/NOPB is the direct active equivalent to the obsolete LP3875EMP-5.0. This part maintains identical electrical specifications including 0.55V dropout voltage and 5 mA quiescent current. The /NOPB suffix indicates lead-free compliance. This part is ROHS3 compliant and available in active production status with 2186 units in stock.

Secondary Recommendations: LP3852EMP-5.0/NOPB, LP3855EMP-5.0/NOPB, LP3855EMPX-5.0/NOPB

These three parts offer improved performance characteristics with reduced dropout voltage (0.44V) and lower quiescent current (3 mA) compared to the original LP3875EMP-5.0. All three are ROHS3 compliant and in active production. These substitutes are suitable when lower power consumption or reduced thermal dissipation is beneficial to the application. LP3855EMP-5.0/NOPB has the highest inventory availability at 3374 units.

Alternative: LP3872EMP-5.0/NOPB

The LP3872EMP-5.0/NOPB from National Semiconductor maintains identical dropout voltage and quiescent current specifications to the original LP3875EMP-5.0. This part is in active production with 1088 units available. Note that the package designation is SOT-223 rather than SOT-223-5; verify pin compatibility with your PCB layout before selection.

Compliance Consideration

The original LP3875EMP-5.0 is RoHS non-compliant. All active substitute parts listed are ROHS3 compliant, making them suitable for applications requiring environmental compliance standards.

Frequently Asked Questions (FAQ)

Q: Can I use LP3852EMP-5.0/NOPB as a direct replacement for LP3875EMP-5.0?

A: Yes. Both parts deliver 5V at 1.5A with identical input voltage limits and operating temperature range. The LP3852EMP-5.0/NOPB offers improved performance with lower dropout voltage (0.44V vs 0.55V) and reduced quiescent current (3 mA vs 5 mA). No circuit modifications are required.

Q: What is the difference between LP3855EMP-5.0/NOPB and LP3855EMPX-5.0/NOPB?

A: Both parts are electrically identical with matching specifications. The primary difference is packaging format: LP3855EMP-5.0/NOPB is supplied in Tape & Reel (TR), while LP3855EMPX-5.0/NOPB is also supplied in Tape & Reel. Verify your procurement requirements for packaging format compatibility.

Q: Is the LP3872EMP-5.0/NOPB package compatible with my existing PCB?

A: The LP3872EMP-5.0/NOPB uses SOT-223 packaging while the original LP3875EMP-5.0 uses SOT-223-5. Although both are surface mount packages, pin configurations may differ. Verify the pinout diagram and PCB footprint compatibility before substitution.

Q: Why should I choose an active part over the obsolete LP3875EMP-5.0?

A: Active parts ensure long-term availability, ongoing manufacturing support, and compliance with current environmental standards. The obsolete LP3875EMP-5.0 is no longer in production and may become unavailable. Active substitutes like LP3875EMP-5.0/NOPB provide identical specifications with ROHS3 compliance.

Q: Do all substitute parts have the same protection features?

A: Yes. All listed substitute parts include over-current, over-temperature, and short-circuit protection with enable control features, matching the original LP3875EMP-5.0 specifications.

Q: Which substitute offers the best power efficiency?

A: LP3852EMP-5.0/NOPB, LP3855EMP-5.0/NOPB, and LP3855EMPX-5.0/NOPB all offer reduced quiescent current at 3 mA and lower dropout voltage at 0.44V, resulting in lower power dissipation compared to the original 5 mA and 0.55V specifications.