LP3962EMP-3.3 Equivalent & Substitute Parts

Part Overview

The LP3962EMP-3.3 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed 3.3V output at 1.5A in a SOT-223-5 surface mount package. The device is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this specific voltage regulation topology and electrical performance.

Substiute Parts

LP3962EMP-3.3

Texas InstrumentsIn Stock: 1291LP3962EMP-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/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

Substitute parts for the LP3962EMP-3.3 are qualified based on the following electrical and mechanical parameters:

• Fixed output voltage of 3.3V
• Output current capability of 1.5A
• Maximum input voltage of 7V
• SOT-223-5 package configuration
• Operating temperature range of -40°C to 125°C
• Identical protection features (Over Current, Over Temperature, Short Circuit)
• Enable control feature
• Surface mount mounting type
• ROHS3 compliance

Parts meeting these criteria are considered parametric equivalents. Variations in quiescent current, voltage dropout, and PSRR do not disqualify substitution when the primary electrical specifications align. Packaging format differences (Tape & Reel vs. Cut Tape) do not affect electrical equivalence but may impact procurement and handling procedures.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using LP3962EMP-3.3, the following selection criteria apply:

Active Status Priority: LP3852EMP-3.3/NOPB, LP3855EMP-3.3/NOPB, LP3872EMP-3.3/NOPB, LP3872EMPX-3.3/NOPB, LP3875EMP-3.3/NOPB, LP3962EMP-3.3/NOPB, and LP3965EMP-3.3/NOPB are all in Active product status. These parts offer long-term availability and are recommended for new designs and production transitions.

Compliance Alignment: All substitute parts maintain ROHS3 compliance and identical protection feature sets (Over Current, Over Temperature, Short Circuit). All parts are MSL Level 1 (Unlimited moisture sensitivity), ensuring consistent handling requirements.

Performance Variants: Parts with lower quiescent current (LP3852EMP-3.3, LP3852EMP-3.3/NOPB, LP3855EMP-3.3/NOPB at 3 mA) or improved voltage dropout (0.44V vs. 0.55V) provide enhanced efficiency characteristics. Parts with 5 mA quiescent current (LP3872 and LP3875 variants) represent a middle ground between efficiency and the original specification.

Packaging Format Considerations: Tape & Reel (TR) packaging is standard for high-volume production. Cut Tape (CT) & Digi-Reel® formats are available for lower-volume or mixed-component orders. Selection should align with procurement and assembly workflow requirements.

Frequently Asked Questions (FAQ)

Q: Can LP3852EMP-3.3/NOPB directly replace LP3962EMP-3.3 in existing designs?

A: Yes. Both parts deliver 3.3V at 1.5A in SOT-223-5 packages with identical input voltage limits, operating temperature ranges, and protection features. The LP3852EMP-3.3/NOPB offers superior performance with lower quiescent current (3 mA vs. 9 mA) and reduced voltage dropout (0.44V vs. 0.55V). No circuit modifications are required.

Q: What is the difference between LP3872EMP-3.3/NOPB and LP3872EMPX-3.3/NOPB?

A: Both variants deliver identical electrical specifications: 3.3V output, 1.5A current, 0.55V dropout, and 5 mA quiescent current. The primary difference is packaging format. LP3872EMP-3.3/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format, while LP3872EMPX-3.3/NOPB is supplied in Tape & Reel (TR) format. Select based on procurement and assembly requirements.

Q: Why do some part numbers include "/NOPB" suffix?

A: The "/NOPB" suffix indicates "No Plumbum" (lead-free) construction, confirming RoHS compliance. Parts with and without this suffix are functionally equivalent; the suffix is a manufacturing and compliance designation. Both formats are ROHS3 compliant.

Q: Are there efficiency differences between substitute options?

A: Yes. LP3852EMP-3.3 and LP3855EMP-3.3/NOPB variants operate at 3 mA quiescent current, reducing standby power consumption compared to the original LP3962EMP-3.3 (9 mA). LP3872 and LP3875 variants operate at 5 mA. For battery-powered or low-power applications, the lower quiescent current variants provide measurable efficiency gains.

Q: Can I mix packaging formats in a single production run?

A: Packaging format selection (Tape & Reel vs. Cut Tape & Digi-Reel) does not affect electrical performance or compatibility. However, assembly line integration and component handling procedures may differ. Coordinate with procurement and manufacturing to ensure consistent supply chain processes.

Q: What is the recommended substitute for new designs?

A: LP3962EMP-3.3/NOPB is the direct equivalent in Active status. For improved efficiency, LP3852EMP-3.3/NOPB or LP3855EMP-3.3/NOPB are preferred due to lower quiescent current and reduced voltage dropout. All three maintain identical electrical interfaces and protection features.