LM2936MM-3.3 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM2936MM-3.3 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications with 50mA current capacity in an 8-VSSOP surface mount package. This part is classified as Last Time Buy, indicating discontinued production. Identifying parametric equivalents and substitute parts is essential for design continuity, inventory management, and long-term product support.

Substiute Parts

LM2936MM-3.3

Texas InstrumentsIn Stock: 2246LM2936MM-3.3 Datasheet

Current PartRFQ

LM2936MM-3.3/NOPB

Texas InstrumentsIn Stock: 65323LM2936MM-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LM2936MMX-3.3/NOPB

Texas InstrumentsIn Stock: 2942LM2936MMX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LM2936QMM-3.3/NOPB

Texas InstrumentsIn Stock: 4091LM2936QMM-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LM2936QMMX-3.3/NOPB

Texas InstrumentsIn Stock: 3655LM2936QMMX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM2936MM-3.3 are identified based on strict parametric equivalence across the following criteria:

Electrical Parameters (Must Match):

• Output voltage: 3.3V fixed
• Output current: 50mA
• Input voltage maximum: 40V
• Voltage dropout: 0.4V @ 50mA
• Quiescent current: 15 µA
• PSRR: 60dB (120Hz)
• Protection features: Over Temperature, Reverse Polarity, Short Circuit
• Operating temperature range: -40°C ~ 125°C (TJ)

Mechanical Parameters (Must Match):

• Package type: 8-VSSOP (8-TSSOP, 8-MSOP)
• Package dimensions: 0.118", 3.00mm Width
• Mounting type: Surface Mount

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)
• REACH Status: REACH Unaffected

Substitute parts differ only in packaging format (Cut Tape vs. Tape & Reel), product status (Active vs. Last Time Buy), and automotive qualification where applicable. All substitutes maintain identical electrical and thermal performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

For Standard Industrial Applications: LM2936MM-3.3/NOPB is the primary substitute for the Last Time Buy LM2936MM-3.3. Both parts maintain identical electrical specifications and standard-grade qualification. The /NOPB variant is Active status with significantly higher inventory availability (65,275 units), ensuring supply continuity. Packaging format is identical (Cut Tape & Digi-Reel®).

For Extended Availability: LM2936MMX-3.3/NOPB provides an alternative with Active status and identical electrical performance. The "X" suffix indicates extended temperature or processing specifications within the same -40°C ~ 125°C operating range. This part is suitable for direct substitution in standard applications.

For Automotive Applications: LM2936QMM-3.3/NOPB and LM2936QMMX-3.3/NOPB are qualified to AEC-Q100 automotive standards and carry Automotive grade designation. These parts are electrically identical to the standard variants but are packaged in Tape & Reel format. Selection of automotive-qualified variants is required only when AEC-Q100 compliance is mandated by application requirements.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, ensuring regulatory alignment with the original LM2936MM-3.3.

Frequently Asked Questions (FAQ)

Q: Can LM2936MM-3.3/NOPB be used as a direct replacement for LM2936MM-3.3?

A: Yes. Both parts are electrically and mechanically identical. The /NOPB designation indicates lead-free plating and is a standard Texas Instruments packaging variant. The primary difference is product status (Active vs. Last Time Buy) and inventory availability.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) & Digi-Reel® packaging is supplied in smaller quantities on cut tape reels, suitable for lower-volume production and prototyping. Tape & Reel (TR) packaging is supplied in full production reels for high-volume manufacturing. Electrical and mechanical specifications are identical; selection depends on production volume and assembly equipment compatibility.

Q: When should I use the automotive-qualified variants (LM2936QMM-3.3/NOPB or LM2936QMMX-3.3/NOPB)?

A: Automotive-qualified variants are required only when your application or customer specifications mandate AEC-Q100 compliance. For standard industrial, consumer, or non-automotive applications, standard-grade variants (LM2936MM-3.3/NOPB or LM2936MMX-3.3/NOPB) are appropriate and typically offer better availability.

Q: Are there any electrical performance differences between the standard and automotive variants?

A: No. All variants maintain identical electrical specifications: 3.3V output, 50mA current capacity, 0.4V dropout voltage, 15 µA quiescent current, and 60dB PSRR. The automotive designation reflects qualification testing and supply chain traceability, not performance differences.

Q: What does the "X" suffix in LM2936MMX-3.3/NOPB indicate?

A: The "X" suffix indicates a variant within the same electrical and temperature specifications. Both LM2936MM-3.3/NOPB and LM2936MMX-3.3/NOPB operate across -40°C ~ 125°C and are functionally equivalent. Selection between them is based on availability and supply chain preference.

Q: Is the MSL Level 1 rating consistent across all variants?

A: Yes. All substitute parts carry MSL Level 1 (Unlimited) moisture sensitivity rating, indicating no moisture precautions are required during storage or handling.