LP2952IMX Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The LP2952IMX is a linear voltage regulator IC from Texas Instruments designed for positive adjustable (fixed) output applications with 250mA output current capability in a 16-SOIC surface mount package. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs and ongoing production requirements. The LP2952IMX series provides positive output configuration with adjustable or fixed voltage output, integrated enable control, and comprehensive protection features including over-current, over-temperature, and reverse polarity protection.

Substiute Parts

LP2952IMX

Texas InstrumentsIn Stock: 2200LP2952IMX Datasheet

Current PartRFQ

LP2952IMX/NOPB

Texas InstrumentsIn Stock: 4186LP2952IMX/NOPB Datasheet

DirectRFQ

LP2952AIMX/NOPB

Texas InstrumentsIn Stock: 5391LP2952AIMX/NOPB Datasheet

Parametric EquivalentRFQ

LP2953AIMX/NOPB

Texas InstrumentsIn Stock: 2009LP2953AIMX/NOPB Datasheet

Parametric EquivalentRFQ

LP2953IMX/NOPB

Texas InstrumentsIn Stock: 3058LP2953IMX/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP2952IMX is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Output configuration: Positive
• Output type: Adjustable (Fixed)
• Number of regulators: 1
• Voltage ratings: Input (Max) 30V, Output (Min/Fixed) 1.23V (5V), Output (Max) 29V
• Voltage dropout: 0.8V @ 250mA
• Current output: 250mA
• Current quiescent: 170 µA
• Current supply (Max): 33 mA
• Control features: Enable
• Protection features: Over Current, Over Temperature, Reverse Polarity
• Operating temperature range: -40°C ~ 125°C

Mechanical Parameters (Must Match):

• Mounting type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Supplier device package: 16-SOIC

Compliance & Status:

• RoHS compliance status
• Product status (Active vs. Obsolete)
• Packaging format (Tape & Reel vs. other)

All substitute parts listed maintain identical electrical and mechanical specifications to the main part, with variations only in product status and RoHS compliance.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and RoHS-Compliant Applications: LP2952IMX/NOPB and LP2952AIMX/NOPB are the primary substitutes. Both are active products with ROHS3 compliance and identical electrical specifications to the obsolete LP2952IMX. LP2952IMX/NOPB offers the highest inventory availability (4156 pcs) and maintains the original part number designation with NOPB (No Plumbum/Lead-Free) packaging. LP2952AIMX/NOPB provides the largest inventory stock (5300 pcs) and represents an alternative variant within the same product line.

For Cross-Series Compatibility: LP2953IMX/NOPB and LP2953AIMX/NOPB are parametric equivalents from the LP2953 series. These parts maintain all critical electrical and mechanical parameters identical to the LP2952 series and are active products with ROHS3 compliance. Selection between LP2952 and LP2953 variants depends on design-specific requirements not differentiated by the provided parameters.

For Legacy or Non-RoHS Applications: The original LP2952IMX remains available in limited inventory (2161 pcs) but carries obsolete product status and RoHS non-compliant designation. This option is suitable only for legacy system maintenance or applications where RoHS compliance is not required.

Frequently Asked Questions (FAQ)

Q: Can LP2952IMX be directly replaced with LP2952IMX/NOPB? A: Yes. LP2952IMX/NOPB is a direct substitute with identical electrical and mechanical specifications. The primary differences are active product status, ROHS3 compliance, and Tape & Reel packaging format. Pin configuration and functional performance are equivalent.

Q: What is the difference between LP2952AIMX/NOPB and LP2952IMX/NOPB? A: Both parts share identical electrical specifications, package type (16-SOIC), and RoHS compliance status. The designation difference (A variant) indicates a product line variant. Electrical performance and pin compatibility are equivalent for substitution purposes.

Q: Are LP2953 series parts compatible with LP2952 designs? A: LP2953IMX/NOPB and LP2953AIMX/NOPB maintain all critical electrical parameters (voltage ratings, current output, dropout voltage, protection features) and mechanical specifications (16-SOIC package) identical to LP2952 variants. These are parametric equivalents suitable for direct substitution in circuit designs.

Q: Why is the original LP2952IMX marked as obsolete? A: The LP2952IMX is classified as obsolete due to product lifecycle management by Texas Instruments. Active equivalents with improved compliance status (ROHS3) and modern packaging formats (Tape & Reel) are available as replacements.

Q: What does NOPB designation mean? A: NOPB indicates "No Plumbum" (No Lead), signifying lead-free RoHS-compliant packaging. This is the standard for modern component procurement and regulatory compliance.

Q: Can I use bulk packaged LP2952IMX in production environments? A: The original LP2952IMX is available in bulk packaging. For production environments, Tape & Reel packaged variants (LP2952IMX/NOPB, LP2952AIMX/NOPB, LP2953IMX/NOPB, LP2953AIMX/NOPB) are recommended for automated assembly compatibility and handling efficiency.

Q: Are all substitute parts rated for the same temperature range? A: Yes. All listed substitute parts maintain the operating temperature range of -40°C ~ 125°C, ensuring thermal performance equivalence across all variants.