LP3962ESX-5.0 Linear Voltage Regulator — Equivalent & Substitute Parts

Part Overview

The LP3962ESX-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output at 1.5A in a TO-263 (DDPAK-5) surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The regulator provides integrated protection features including over-current, over-temperature, and short-circuit protection, with an enable control feature for power management applications.

Substiute Parts

LP3962ESX-5.0

Texas InstrumentsIn Stock: 4683LP3962ESX-5.0 Datasheet

Current PartRFQ

LP3962ESX-5.0/NOPB

Texas InstrumentsIn Stock: 737LP3962ESX-5.0/NOPB Datasheet

DirectRFQ

LP3852ESX-5.0/NOPB

Texas InstrumentsIn Stock: 1170LP3852ESX-5.0/NOPB Datasheet

Parametric EquivalentRFQ

LP3855ESX-5.0/NOPB

Texas InstrumentsIn Stock: 839LP3855ESX-5.0/NOPB Datasheet

Parametric EquivalentRFQ

LP3872ESX-5.0/NOPB

National SemiconductorIn Stock: 9340LP3872ESX-5.0/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP3962ESX-5.0 are grouped based on strict electrical and mechanical parameter compatibility:

Primary Substitution Criteria:

• Fixed 5V output voltage
• 1.5A output current capability
• Maximum 7V input voltage rating
• TO-263 (DDPAK-5) package compatibility
• Surface mount configuration
• Over-current, over-temperature, and short-circuit protection
• Enable control feature
• Operating temperature range -40°C ~ 125°C

Substitute Parts Identified:

• LP3962ESX-5.0/NOPB (Direct equivalent, active status)
• LP3852ESX-5.0/NOPB (Parametric equivalent, improved performance)
• LP3855ESX-5.0/NOPB (Parametric equivalent, improved performance)
• LP3872ESX-5.0/NOPB (Parametric equivalent, alternative source)

All substitute parts maintain the same output voltage, output current, input voltage rating, package type, and protection feature set as the original LP3962ESX-5.0.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Active Production:

LP3962ESX-5.0/NOPB is the direct equivalent replacement. This part maintains identical electrical specifications and package configuration while offering active product status and ROHS3 compliance. The Tape & Reel packaging format supports automated assembly processes.

For Improved Performance Requirements:

LP3852ESX-5.0/NOPB and LP3855ESX-5.0/NOPB offer reduced voltage dropout (0.38V versus 0.55V) and lower quiescent current (3 mA versus 9 mA), resulting in improved thermal efficiency and reduced power dissipation. Both parts are ROHS3 compliant and actively manufactured. These alternatives are suitable when thermal management or power efficiency is a design priority.

For Alternative Sourcing:

LP3872ESX-5.0/NOPB from National Semiconductor provides an additional supply source while maintaining the same output voltage, current rating, and package compatibility. This part is actively produced and supports supply chain diversification.

All substitute parts share identical package geometry (TO-263 DDPAK-5), mounting type (surface mount), protection features, and operating temperature range, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can LP3962ESX-5.0/NOPB be used as a direct replacement for LP3962ESX-5.0?

A: Yes. LP3962ESX-5.0/NOPB is the direct equivalent with identical electrical specifications and package configuration. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant).

Q: What are the advantages of using LP3852ESX-5.0/NOPB or LP3855ESX-5.0/NOPB?

A: Both parts feature reduced voltage dropout (0.38V versus 0.55V) and lower quiescent current (3 mA versus 9 mA). These improvements reduce power dissipation and heat generation, beneficial for battery-powered or thermally constrained applications. Both are ROHS3 compliant and actively manufactured.

Q: Are all substitute parts pin-compatible with the original LP3962ESX-5.0?

A: Yes. All substitute parts use the TO-263 (DDPAK-5) package with identical pin configuration and spacing, ensuring direct PCB compatibility without layout changes.

Q: What is the difference between LP3852ESX-5.0/NOPB and LP3855ESX-5.0/NOPB?

A: Both parts have identical electrical specifications and performance characteristics. The difference is the base product number (LP3852 versus LP3855), which may reflect different manufacturing lines or design revisions from Texas Instruments. Electrical performance and package compatibility are equivalent.

Q: Can LP3872ESX-5.0/NOPB from National Semiconductor be used interchangeably?

A: Yes. LP3872ESX-5.0/NOPB maintains the same output voltage, current rating, input voltage maximum, package type, and protection features. It serves as an alternative source for supply chain flexibility while maintaining full electrical and mechanical compatibility.

Q: What packaging options are available for these substitute parts?

A: LP3962ESX-5.0/NOPB is supplied in Tape & Reel (TR) format for automated assembly. LP3852ESX-5.0/NOPB and LP3855ESX-5.0/NOPB are available in Cut Tape (CT) and Digi-Reel formats. LP3872ESX-5.0/NOPB is supplied in Bulk packaging. Select packaging based on assembly process requirements.

Q: Are all substitute parts RoHS compliant?

A: LP3962ESX-5.0/NOPB, LP3852ESX-5.0/NOPB, and LP3855ESX-5.0/NOPB are ROHS3 compliant. RoHS status for LP3872ESX-5.0/NOPB is not specified in available documentation.

Q: What is the moisture sensitivity level for these parts?

A: LP3962ESX-5.0/NOPB, LP3852ESX-5.0/NOPB, and LP3855ESX-5.0/NOPB all have MSL 3 (168 Hours). Moisture sensitivity for LP3872ESX-5.0/NOPB is not specified.