LM2619ATL/NOPB Equivalent & Substitute Parts

Part Overview

The LM2619ATL/NOPB is a buck switching regulator IC manufactured by Texas Instruments, designed for positive adjustable output applications. This device operates as a step-down converter with a single adjustable output, delivering up to 500mA at switching frequencies of 600kHz. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

LM2619ATL/NOPB

Texas InstrumentsIn Stock: 967LM2619ATL/NOPB Datasheet

Current PartRFQ

LM3671TLX-ADJ/NOPB

Texas InstrumentsIn Stock: 73689LM3671TLX-ADJ/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2619ATL/NOPB is determined by the following critical parameters:

• Topology & Function: Buck (step-down) converter with positive adjustable output
• Output Characteristics: Single output, adjustable voltage range capability
• Electrical Performance: Input voltage range (minimum 2.8V), output voltage range (minimum 1.5V), output current capacity (minimum 500mA)
• Switching Frequency: Operating at 600kHz or higher
• Synchronous Rectification: Required for efficiency
• Package Compatibility: Surface mount DSBGA package family
• Compliance: ROHS3 compliant, REACH unaffected

The LM3671TLX-ADJ/NOPB qualifies as a direct substitute based on these parameters. It maintains buck topology with positive adjustable output, exceeds the minimum electrical specifications, and is available in a compatible DSBGA package format.

Parameter Comparison

Engineering Selection Recommendations

The LM3671TLX-ADJ/NOPB is the manufacturer-recommended substitute for the obsolete LM2619ATL/NOPB. Selection is supported by the following factors:

Product Status: The LM3671TLX-ADJ/NOPB maintains active product status with Texas Instruments, ensuring continued availability and technical support. The original LM2619ATL/NOPB is obsolete, necessitating transition to an active alternative.

Electrical Specifications: The substitute part exceeds the minimum electrical requirements of the original design. Output current capacity increases from 500mA to 600mA, switching frequency increases from 600kHz to 2MHz, and the adjustable output voltage range expands downward to 1.1V minimum. These enhancements provide design margin and flexibility.

Compliance & Certifications: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. Moisture sensitivity level remains at MSL 1 (unlimited) for both devices.

Package Compatibility: Both devices use DSBGA package technology. The substitute uses a 5-DSBGA package (1.41x1.08mm) compared to the original 10-WFBGA package (2.25x2.5mm). PCB layout modifications are required to accommodate the different package footprint.

Frequently Asked Questions (FAQ)

Q: Can the LM3671TLX-ADJ/NOPB directly replace the LM2619ATL/NOPB without circuit modifications?

A: The LM3671TLX-ADJ/NOPB is functionally equivalent but requires PCB layout changes due to different package footprints. The original uses 10-WFBGA (2.25x2.5mm) while the substitute uses 5-DSBGA (1.41x1.08mm). Pin configuration and electrical interface compatibility must be verified against device datasheets before implementation.

Q: What are the key electrical advantages of the LM3671TLX-ADJ/NOPB?

A: The substitute provides higher output current capacity (600mA vs 500mA), higher switching frequency (2MHz vs 600kHz), lower minimum output voltage (1.1V vs 1.5V), and extended operating temperature range (-40°C to 85°C vs -25°C to 85°C).

Q: Is the LM3671TLX-ADJ/NOPB available in the same package as the original?

A: No. The original LM2619ATL/NOPB uses a 10-WFBGA package, while the LM3671TLX-ADJ/NOPB uses a 5-DSBGA package. Both are DSBGA family devices but with different pin counts and physical dimensions. PCB redesign is necessary.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts maintain identical compliance status: ROHS3 compliant, REACH unaffected, MSL 1 (unlimited), and EAR99 export classification. No regulatory barriers exist for substitution.

Q: What is the inventory status of the substitute part?

A: The LM3671TLX-ADJ/NOPB is actively manufactured by Texas Instruments with 73,581 units in stock, ensuring reliable supply for new designs and production requirements.