LB11988H-TLM-E Equivalent & Substitute Parts

Part Overview

The LB11988H-TLM-E is a motor driver IC manufactured by onsemi, designed for brushless DC (BLDC) motor applications. This integrated circuit combines control and power stage functionality in a 28-HSOP package, operating across a 7V to 22V supply voltage range with 1.3A output current capability. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and component procurement.

Substiute Parts

LB11988H-TLM-E

onsemiIn Stock: 1002LB11988H-TLM-E Datasheet

Current PartRFQ

BA6840BFS-E2

Rohm SemiconductorIn Stock: 1713BA6840BFS-E2 Datasheet

SimilarRFQ

BA6859AFP-YE2

Rohm SemiconductorIn Stock: 16046BA6859AFP-YE2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LB11988H-TLM-E are identified based on the following critical parameters that determine functional equivalence:

• Motor Type: Brushless DC (BLDC)
• Function: Driver - Fully Integrated, Control and Power Stage
• Output Configuration: Half Bridge (3)
• Interface: Parallel
• Technology: Bipolar
• Current - Output: 1.3A
• Mounting Type: Surface Mount

The identified substitute parts maintain these core functional characteristics. However, voltage supply ranges and operating temperature specifications differ, requiring evaluation against specific application requirements. Package differences and product status variations are noted for design consideration.

Parameter Comparison

Engineering Selection Recommendations

BA6840BFS-E2 (Rohm Semiconductor)

This part is actively manufactured and maintains the core functional parameters of the LB11988H-TLM-E: half-bridge (3) output configuration, parallel interface, bipolar technology, and 1.3A output current. The BA6840BFS-E2 is ROHS3 compliant with MSL 1 rating, providing superior moisture handling compared to the main part. However, the supply voltage range (4.25V ~ 5.5V) is significantly narrower than the LB11988H-TLM-E (7V ~ 22V), and the operating temperature range is reduced (-20°C ~ 75°C versus -30°C ~ 85°C). Package dimensions differ (20-SOP versus 28-SOP), requiring PCB layout modification. Selection of this part is appropriate for applications operating within the specified voltage and temperature constraints.

BA6859AFP-YE2 (Rohm Semiconductor)

This part is listed as "Not For New Designs" and carries MSL 1 rating with ROHS3 compliance. Complete functional parameter data is not provided in the available documentation. The supply voltage range (4.5V ~ 5.5V) is similarly constrained compared to the main part. This part is not recommended for new designs or as a primary substitute due to its design status classification.

Frequently Asked Questions (FAQ)

Q: Can BA6840BFS-E2 directly replace LB11988H-TLM-E in existing designs?

A: Direct replacement requires verification that your application operates within the BA6840BFS-E2 supply voltage range (4.25V ~ 5.5V) and temperature range (-20°C ~ 75°C). The LB11988H-TLM-E supports 7V ~ 22V supply, which exceeds BA6840BFS-E2 capabilities. Package differences (20-SOP versus 28-SOP) necessitate PCB redesign. Functional parameters including output configuration, interface type, and output current are equivalent.

Q: What are the key differences in package specifications?

A: The LB11988H-TLM-E uses a 28-SOP package (0.311" width, 7.90mm) with exposed pad and 2 heat tabs. The BA6840BFS-E2 uses a 20-SOP package (0.213" width, 5.40mm). The BA6859AFP-YE2 uses a 25-HSOP package. These dimensional differences require PCB layout modifications and cannot be accommodated through footprint compatibility alone.

Q: How do moisture sensitivity levels affect component handling?

A: The LB11988H-TLM-E carries MSL 3 rating (168-hour floor life), requiring controlled storage and handling procedures. Both substitute parts carry MSL 1 rating (unlimited floor life), providing superior moisture tolerance and reduced handling constraints during manufacturing and assembly.

Q: Are there compliance differences between the main part and substitutes?

A: All parts share REACH Unaffected and EAR99 ECCN classifications. The BA6840BFS-E2 and BA6859AFP-YE2 are ROHS3 compliant. RoHS compliance status for the LB11988H-TLM-E is not specified in available data. Both substitute parts demonstrate superior environmental compliance profiles.

Q: What inventory considerations apply to these substitutes?

A: The LB11988H-TLM-E is obsolete with 899 units in stock. The BA6840BFS-E2 is actively manufactured with 1626 units available. The BA6859AFP-YE2 is not recommended for new designs but has 15977 units in stock. Active manufacturing status of BA6840BFS-E2 provides long-term supply assurance.