LB11685AV-TLM-H Equivalent & Substitute Parts

Part Overview

The LB11685AV-TLM-H is a fully integrated motor driver IC manufactured by onsemi, designed for brushless DC (BLDC) motor control applications. This device integrates both control and power stage functionality in a compact 24-SSOP-J package, operating across a 4.5V to 18V supply range with 1.2A output current capability. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

LB11685AV-TLM-H

onsemiIn Stock: 25395LB11685AV-TLM-H Datasheet

Current PartRFQ

LB11685AV-W-AH

onsemiIn Stock: 2001LB11685AV-W-AH Datasheet

DirectRFQ

A5941GLNTR-T

Allegro MicroSystemsIn Stock: 3504A5941GLNTR-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LB11685AV-TLM-H are identified based on functional equivalence within the following critical parameters:

Primary Substitution Criteria:

• Motor driver function with fully integrated control and power stage
• Brushless DC (BLDC) motor control capability
• Half bridge (3) output configuration
• Surface mount packaging
• ROHS3 compliance and REACH unaffected status

Direct Equivalent (Same Manufacturer): The LB11685AV-W-AH maintains identical electrical specifications, output configuration, voltage ranges, current ratings, and thermal operating range as the main part. Both are onsemi LB11685 base series components with the same 24-SSOP-J package footprint, differing only in packaging designation suffix.

Similar Substitute (Alternative Manufacturer): The A5941GLNTR-T from Allegro MicroSystems provides BLDC motor driver functionality with half bridge (3) output configuration and surface mount packaging. This part operates across a different temperature range (-40°C ~ 105°C TA) and uses a more compact 10-SSOP package. Electrical specifications for supply voltage, load voltage, and output current are not provided in the available data, requiring design verification for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): The LB11685AV-W-AH is the primary substitute for the LB11685AV-TLM-H. Both parts share identical electrical specifications, thermal performance, and package footprint. Selection of this part ensures pin-for-pin compatibility and eliminates design modification requirements. Both parts maintain ROHS3 compliance and REACH unaffected status. Current inventory availability (1900 units) supports production requirements.

For Alternative Substitution: The A5941GLNTR-T from Allegro MicroSystems offers an active product status, providing long-term availability assurance compared to the obsolete onsemi parts. This device maintains BLDC motor driver functionality with half bridge output configuration and ROHS3 compliance. The 10-SSOP package provides a more compact footprint, reducing PCB area requirements. However, the reduced operating temperature range (-40°C ~ 105°C TA versus -40°C ~ 150°C TJ) and unspecified electrical parameters require design verification before implementation. MSL rating of 1 (unlimited) provides superior moisture handling characteristics.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production continuity. The A5941GLNTR-T includes automotive grade qualification, suitable for applications requiring automotive-level reliability.

Frequently Asked Questions (FAQ)

Q: Can the LB11685AV-W-AH be used as a direct replacement for the LB11685AV-TLM-H?

A: Yes. Both parts are onsemi LB11685 series components with identical electrical specifications, output configuration, voltage ranges, current ratings, thermal performance, and 24-SSOP-J package footprint. No design modifications are required for direct substitution.

Q: What are the key differences between the onsemi LB11685 variants and the Allegro A5941GLNTR-T?

A: The primary differences are package size (24-SSOP-J versus 10-SSOP), operating temperature range (-40°C ~ 150°C TJ versus -40°C ~ 105°C TA), and product status (obsolete versus active). The A5941GLNTR-T provides a more compact package and active product status but requires verification of electrical specifications for specific application requirements.

Q: Is the A5941GLNTR-T suitable for high-temperature applications?

A: The A5941GLNTR-T operates to 105°C (TA), which is lower than the LB11685AV-TLM-H specification of 150°C (TJ). Applications requiring operation above 105°C ambient temperature should use the onsemi LB11685 variants.

Q: What is the impact of package size differences on PCB design?

A: The A5941GLNTR-T uses a 10-SSOP package (0.154", 3.90mm width) compared to the 24-SSOP-J package (0.220", 5.60mm width) of the LB11685 variants. The smaller package reduces PCB footprint area but requires PCB layout redesign and verification of trace routing and thermal management.

Q: Are all three parts RoHS compliant?

A: Yes. The LB11685AV-TLM-H, LB11685AV-W-AH, and A5941GLNTR-T all maintain ROHS3 compliance and REACH unaffected status.

Q: What is the MSL rating significance for these parts?

A: The LB11685 variants carry MSL 3 (168 hours), requiring controlled moisture exposure during storage and handling. The A5941GLNTR-T carries MSL 1 (unlimited), eliminating moisture sensitivity concerns and simplifying inventory management.