LM629M-8 Equivalent & Substitute Parts

Part Overview

The LM629M-8 is a brushless DC (BLDC) and brushed DC servo motor driver IC manufactured by Texas Instruments, designed for general-purpose motor control applications. Operating within a 4.5V to 5.5V supply voltage range, this device functions as a commutation and direction management controller with a pre-driver half-bridge output configuration. The LM629M-8 is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent substitute parts is necessary for ongoing system support, maintenance, and component procurement when original inventory becomes unavailable.

Substiute Parts

LM629M-8

Texas InstrumentsIn Stock: 1722LM629M-8 Datasheet

Current PartRFQ

LM629M-8/NOPB

Texas InstrumentsIn Stock: 2297LM629M-8/NOPB Datasheet

DirectRFQ

LM629M-6/NOPB

Texas InstrumentsIn Stock: 2200LM629M-6/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM629M-8 are identified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Critical Parameters for Substitution:

• Voltage supply range: 4.5V ~ 5.5V
• Motor control function: Commutation and direction management
• Output configuration: Pre-Driver - Half Bridge (4)
• Interface type: Parallel
• Package: 24-SOIC form factor
• Operating temperature range: -40°C ~ 85°C
• Compliance standards: ROHS3, REACH Unaffected

The LM629M-8 shares an identical base product number (LM629) with its substitute parts. Differences between variants are limited to packaging type and product status. All identified substitutes maintain full electrical and mechanical compatibility with the original part.

Parameter Comparison

Engineering Selection Recommendations

LM629M-8/NOPB is the direct manufacturer equivalent with identical electrical specifications and packaging. This part carries Active product status and is available in tube packaging, making it suitable for production environments requiring documented traceability and compliance certification.

LM629M-6/NOPB is a parametric equivalent sharing all critical electrical and mechanical parameters with the LM629M-8. This part also carries Active product status and tube packaging. Selection between LM629M-8/NOPB and LM629M-6/NOPB depends on specific procurement requirements and availability, as both meet all functional and compliance criteria.

Both substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance for applications in restricted substance environments. The transition from the obsolete LM629M-8 to either active substitute ensures continued access to this motor driver topology while supporting long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can LM629M-8/NOPB and LM629M-6/NOPB be used interchangeably with LM629M-8?

A: Yes. Both parts maintain identical electrical specifications, motor control functions, output configurations, supply voltage ranges, operating temperature ranges, and 24-SOIC package dimensions. All three parts are functionally equivalent for motor driver applications.

Q: What is the difference between LM629M-8 and LM629M-8/NOPB?

A: The primary difference is product status and packaging documentation. LM629M-8 is classified as "Not For New Designs," while LM629M-8/NOPB is Active. The "/NOPB" designation indicates lead-free, halogen-free packaging. Both share identical electrical performance.

Q: Why should I select an Active product status part over the obsolete LM629M-8?

A: Active product status ensures ongoing manufacturer support, documented supply availability, and compliance with current regulatory standards. Obsolete parts face inventory depletion and lack manufacturer technical support.

Q: Are there any thermal or electrical performance differences between these substitutes?

A: No. All three parts operate within the same voltage supply range (4.5V ~ 5.5V), temperature range (-40°C ~ 85°C), and provide identical pre-driver half-bridge output configurations for BLDC and brushed DC servo motor control.

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

A: LM629M-8/NOPB and LM629M-6/NOPB are supplied in tube packaging, suitable for automated assembly and production environments. Both maintain the 24-SOIC surface-mount form factor.