LP3971SQ-B410 Equivalent & Substitute Parts

Part Overview

The LP3971SQ-B410 is a Processor Power Management IC (PMIC) manufactured by Texas Instruments in a 40-WQFN (5x5) package with exposed pad. This component is designed for advanced application processors requiring integrated power management functionality. The part is currently classified as Obsolete, making identification of suitable substitutes essential for ongoing system support and component procurement.

Substiute Parts

LP3971SQ-B410

Texas InstrumentsIn Stock: 1943LP3971SQ-B410 Datasheet

Current PartRFQ

LP3971SQ-B410/NOPB

Texas InstrumentsIn Stock: 6320LP3971SQ-B410/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP3971SQ-B410 is determined by strict alignment of the following critical parameters:

• Package Compatibility: 40-WFQFN Exposed Pad (5x5) form factor
• Electrical Specifications: Voltage supply range 2.7V ~ 5.5V and 60µA current supply
• Thermal Range: Operating temperature -40°C ~ 85°C
• Mounting Technology: Surface Mount configuration
• Functional Classification: Processor PMIC application

The substitute part LP3971SQ-B410/NOPB shares the identical base product number (LP3971) and maintains full electrical and mechanical compatibility with the original part. Both variants are manufactured by Texas Instruments and support the same processor applications.

Parameter Comparison

Engineering Selection Recommendations

The LP3971SQ-B410/NOPB is the direct equivalent substitute for the LP3971SQ-B410. Both parts maintain identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility in processor power management applications.

The primary distinction between the two variants is regulatory compliance status. The LP3971SQ-B410/NOPB carries ROHS3 Compliant certification, whereas the original LP3971SQ-B410 is RoHS non-compliant. For applications subject to RoHS regulations or environmental compliance requirements, the LP3971SQ-B410/NOPB is the appropriate selection.

Both parts are classified as end-of-life products (Obsolete or Not For New Designs). Component selection should prioritize available inventory and application-specific compliance requirements.

Frequently Asked Questions (FAQ)

Q: Are LP3971SQ-B410 and LP3971SQ-B410/NOPB electrically interchangeable?

A: Yes. Both parts share identical voltage supply range (2.7V ~ 5.5V), current supply (60µA), operating temperature range (-40°C ~ 85°C), and functional specifications for processor PMIC applications.

Q: What is the difference between these two part numbers?

A: The primary difference is RoHS compliance status. LP3971SQ-B410/NOPB is ROHS3 Compliant, while LP3971SQ-B410 is RoHS non-compliant. The "/NOPB" suffix indicates lead-free, halogen-free manufacturing. Electrical and mechanical specifications are identical.

Q: Can I use LP3971SQ-B410/NOPB as a direct replacement in existing designs?

A: Yes. The 40-WFQFN Exposed Pad package, pinout, and electrical characteristics are identical. No PCB redesign or circuit modification is required.

Q: Why are both parts classified as end-of-life?

A: LP3971SQ-B410 is marked Obsolete, and LP3971SQ-B410/NOPB is marked Not For New Designs. Both reflect Texas Instruments' product lifecycle status. Existing inventory remains available for legacy system support.

Q: Which part should I select for new designs?

A: Both parts are not recommended for new designs. For new processor PMIC applications, consult Texas Instruments' current product portfolio for active alternatives with equivalent or enhanced functionality.

Q: Are there any moisture sensitivity considerations?

A: Both parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage, handling, or assembly.