LP3852EMPX-3.3 Equivalent & Substitute Parts

Part Overview

The LP3852EMPX-3.3 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed 3.3V output at 1.5A maximum current in a surface-mount SOT-223-5 package. The part is currently marked as obsolete, making identification of functional equivalents essential for design continuity and procurement planning. Substitute parts must maintain identical electrical performance characteristics while meeting current manufacturing and compliance standards.

Substiute Parts

LP3852EMPX-3.3

Texas InstrumentsIn Stock: 2397LP3852EMPX-3.3 Datasheet

Current PartRFQ

LP3852EMP-3.3

Texas InstrumentsIn Stock: 1523LP3852EMP-3.3 Datasheet

Parametric EquivalentRFQ

LP3852EMP-3.3/NOPB

Texas InstrumentsIn Stock: 2298LP3852EMP-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP3855EMP-3.3/NOPB

Texas InstrumentsIn Stock: 2488LP3855EMP-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP3872EMP-3.3/NOPB

Texas InstrumentsIn Stock: 55394LP3872EMP-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP3872EMPX-3.3/NOPB

Texas InstrumentsIn Stock: 3093LP3872EMPX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP3875EMP-3.3/NOPB

Texas InstrumentsIn Stock: 1738LP3875EMP-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP3962EMP-3.3

Texas InstrumentsIn Stock: 1291LP3962EMP-3.3 Datasheet

Parametric EquivalentRFQ

LP3962EMP-3.3/NOPB

Texas InstrumentsIn Stock: 1705LP3962EMP-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP3965EMP-3.3/NOPB

Texas InstrumentsIn Stock: 1505LP3965EMP-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict electrical and mechanical parameter matching. The primary criteria are:

• Fixed output voltage of 3.3V
• Maximum output current of 1.5A
• Maximum input voltage of 7V
• SOT-223-5 package compatibility
• Identical protection features (Over Current, Over Temperature, Short Circuit)
• Enable control feature

Substitute parts are grouped into two categories based on dropout voltage performance:

Category A (Matched Dropout): Parts with 0.44V maximum dropout voltage at 1.5A, providing identical performance to the LP3852EMPX-3.3.

Category B (Higher Dropout): Parts with 0.55V maximum dropout voltage at 1.5A, representing acceptable substitutes where the additional 0.11V dropout is tolerable within system design margins.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: LP3852EMP-3.3/NOPB

This part provides exact electrical equivalence to the LP3852EMPX-3.3 with matched dropout voltage (0.44V @ 1.5A) and quiescent current (3 mA). The part is in active production status with ROHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory compliance for new designs.

Secondary Recommendation: LP3855EMP-3.3/NOPB

Identical electrical specifications to LP3852EMP-3.3/NOPB with active product status. Suitable for applications where the LP3852 variant is unavailable. Both parts share the same base performance characteristics and package configuration.

Alternative Recommendation (Higher Dropout Tolerance Required): LP3872EMP-3.3/NOPB, LP3872EMPX-3.3/NOPB, LP3875EMP-3.3/NOPB, LP3962EMP-3.3/NOPB, LP3965EMP-3.3/NOPB

These parts feature 0.55V maximum dropout voltage and elevated quiescent current (5-9 mA). Selection from this group is appropriate only when system design margins accommodate the additional 0.11V dropout voltage penalty. All parts maintain active production status and ROHS3 compliance. LP3962EMP-3.3 and LP3962EMP-3.3/NOPB are marked Last Time Buy and Active respectively, indicating limited future availability.

Avoid: LP3852EMPX-3.3 (obsolete status) and LP3852EMP-3.3 (Last Time Buy status) for new designs requiring long-term component availability.

Frequently Asked Questions (FAQ)

Q: Can LP3852EMP-3.3/NOPB directly replace LP3852EMPX-3.3 in existing designs?

A: Yes. Both parts deliver identical electrical performance with 0.44V maximum dropout voltage at 1.5A, 3 mA quiescent current, and SOT-223-5 package compatibility. The primary difference is product status and compliance certification. LP3852EMP-3.3/NOPB is actively manufactured and ROHS3 compliant.

Q: What is the significance of the "/NOPB" suffix?

A: The "/NOPB" designation indicates "No Plumbum" (lead-free) manufacturing, reflecting ROHS3 compliance. Parts without this suffix may contain lead and are typically non-compliant with modern environmental regulations.

Q: Can I use LP3872EMP-3.3/NOPB as a substitute if LP3852EMP-3.3/NOPB is unavailable?

A: Substitution is possible only if your system design accommodates the 0.55V maximum dropout voltage (versus 0.44V for LP3852 variants) and the increased quiescent current of 5 mA (versus 3 mA). Verify that input voltage headroom and thermal dissipation remain within acceptable limits.

Q: Are all substitute parts available in the same packaging options?

A: All listed substitute parts use the SOT-223-5 package (TO-261-5, TO-261AB) with identical pinout and mechanical dimensions. Packaging options (Cut Tape, Digi-Reel, Tape & Reel) vary by part number but do not affect electrical compatibility.

Q: What compliance certifications apply to these parts?

A: All active and Last Time Buy substitute parts are ROHS3 compliant and carry REACH unaffected or REACH affected designations as specified. ECCN classification is EAR99 for all parts. Verify specific REACH status for your regulatory jurisdiction.

Q: Why do some parts show higher quiescent current?

A: LP3962 and LP3965 variants specify 9 mA quiescent current compared to 3 mA for LP3852/LP3855 variants. This represents a design difference in the internal bias network. Select based on system power budget requirements, particularly for battery-powered or low-power standby applications.