LP2952IM Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP2952IM is a linear voltage regulator IC from Texas Instruments designed for positive adjustable (fixed) output applications with 250mA current capability in a 16-SOIC surface mount package. This device operates across a wide input voltage range (up to 30V) and provides output voltage adjustment from 1.23V to 29V with integrated protection features including over-current, over-temperature, and reverse polarity protection.

The LP2952IM carries a Last Time Buy product status, indicating end-of-life designation. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term support.

Substiute Parts

LP2952IM

Texas InstrumentsIn Stock: 2505LP2952IM Datasheet

Current PartRFQ

LP2952IM/NOPB

National SemiconductorIn Stock: 2234LP2952IM/NOPB Datasheet

DirectRFQ

LP2953AIM/NOPB

Texas InstrumentsIn Stock: 1349LP2953AIM/NOPB Datasheet

Parametric EquivalentRFQ

LP2953IM/NOPB

National SemiconductorIn Stock: 1088LP2953IM/NOPB Datasheet

Parametric EquivalentRFQ

LP2953IM

National SemiconductorIn Stock: 2279LP2953IM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP2952IM is determined by strict parametric equivalence across the following critical criteria:

• Output configuration (Positive)
• Output type (Adjustable/Fixed capability)
• Voltage specifications (Input max 30V, Output range 1.23V–29V)
• Current ratings (250mA output, 170 µA quiescent)
• Dropout voltage (0.8V @ 250mA)
• Protection features (Over-current, over-temperature, reverse polarity)
• Package type (16-SOIC with 3.90mm width)
• Operating temperature range (-40°C ~ 125°C)

All substitute parts listed below meet these electrical and mechanical parameters identically. Substitution categories are based on manufacturer identity and product status only.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain identical electrical and mechanical specifications to the LP2952IM. Selection should be based on the following criteria:

For Active Production: LP2952IM/NOPB, LP2953AIM/NOPB, and LP2953IM/NOPB are all designated as Active products and represent the primary substitution path. These parts ensure continued availability and manufacturer support.

For Regulatory Compliance: LP2952IM/NOPB and LP2953AIM/NOPB both carry ROHS3 compliance certification. If ROHS3 compliance is a design requirement, these parts are preferred. LP2953IM is marked as RoHS non-compliant and REACH Affected; use only if regulatory constraints permit.

For Supply Chain Continuity: LP2953AIM/NOPB (Texas Instruments) and LP2953IM/NOPB (National Semiconductor) maintain the highest inventory levels (1,278 and 1,012 units respectively) among active alternatives, supporting long-term procurement needs.

For Manufacturer Preference: If Texas Instruments sourcing is required, LP2953AIM/NOPB is the direct equivalent. If National Semiconductor parts are acceptable, LP2952IM/NOPB, LP2953IM/NOPB, or LP2953IM provide equivalent functionality.

Frequently Asked Questions (FAQ)

Q: Can LP2952IM be directly replaced with LP2953IM variants?

A: Yes. All LP2953 variants listed (LP2953AIM/NOPB, LP2953IM/NOPB, LP2953IM) are parametric equivalents with identical electrical specifications, output configuration, current ratings, voltage ranges, and protection features. The primary difference is manufacturer designation and product status (Active vs. Last Time Buy).

Q: What is the difference between LP2952IM/NOPB and LP2952IM?

A: LP2952IM/NOPB is the direct equivalent from National Semiconductor with identical electrical and mechanical parameters. The "/NOPB" suffix indicates "No Plumbum" (lead-free) packaging. Both parts are functionally interchangeable in the 16-SOIC package.

Q: Are there any package compatibility concerns?

A: No. All substitute parts use the identical 16-SOIC package (0.154" width, 3.90mm) with the same pinout and thermal characteristics. PCB layout and footprints require no modification.

Q: Which substitute should I choose for new designs?

A: For new designs, select from parts with Active product status: LP2952IM/NOPB, LP2953AIM/NOPB, or LP2953IM/NOPB. If ROHS3 compliance is required, use LP2952IM/NOPB or LP2953AIM/NOPB. Texas Instruments sourcing preference favors LP2953AIM/NOPB.

Q: Is LP2953IM suitable for production use?

A: LP2953IM is Active but carries RoHS non-compliant and REACH Affected designations. Use only if your application and regulatory environment permit non-compliant components. For standard industrial and consumer applications, ROHS3-compliant alternatives are recommended.

Q: Do all substitutes have the same protection features?

A: Yes. All parts provide identical protection: over-current, over-temperature, and reverse polarity protection. Enable control features are also identical across all variants.

Q: What is the inventory status for each substitute?

A: LP2952IM (main part): 2,478 units; LP2952IM/NOPB: 2,200 units; LP2953AIM/NOPB: 1,278 units; LP2953IM/NOPB: 1,012 units; LP2953IM: 2,200 units. All parts are available as new original stock.