LB1876-TLM-E Equivalent & Substitute Parts

Part Overview

The LB1876-TLM-E is a fully integrated motor driver IC manufactured by onsemi, designed for brushless DC (BLDC) motor applications with integrated control and power stages. This device operates across a 9.5V to 28V supply range and delivers 2.5A output current through three half-bridge configurations. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

LB1876-TLM-E

onsemiIn Stock: 3376LB1876-TLM-E Datasheet

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LB11876-TLM-E

onsemiIn Stock: 3892LB11876-TLM-E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LB1876-TLM-E is determined by the following critical parameters:

Functional Requirements:

• Motor driver architecture with integrated control and power stages
• Three half-bridge output configuration for BLDC motor commutation
• Parallel interface with PWM control capability

Electrical Compatibility:

• Supply voltage range: 9.5V ~ 28V
• Load voltage range: 9.5V ~ 28V
• Output current capability: 2.5A minimum

Physical & Environmental Constraints:

• Surface mount packaging in 36-pin configuration
• Operating temperature range: -20°C to 80°C minimum
• Moisture sensitivity level 3 or better

Identified Substitute: The LB11876-TLM-E from onsemi functions as a controller-level substitute with pre-driver half-bridge outputs. However, this part operates at different voltage levels (4.5V ~ 5.5V and 8V ~ 17V) and provides commutation and direction management rather than fully integrated power stage functionality. This represents a functional alternative for applications where the voltage requirements align.

Parameter Comparison

Engineering Selection Recommendations

Both the LB1876-TLM-E and LB11876-TLM-E are classified as obsolete products from onsemi. Selection between these parts depends on system voltage requirements:

LB1876-TLM-E Selection Criteria:

• Systems requiring 9.5V to 28V supply voltage
• Applications needing fully integrated power stage with 2.5A output capability
• Direct replacement for existing LB1876-based designs

LB11876-TLM-E Selection Criteria:

• Systems operating at 4.5V ~ 5.5V or 8V ~ 17V supply levels
• Applications where pre-driver architecture with external power stage is acceptable
• Designs requiring commutation and direction management control

Both parts maintain identical moisture sensitivity levels and share the same application domain (polygonal mirror systems). The LB11876-TLM-E offers extended operating temperature range (-20°C to 85°C versus -20°C to 80°C), providing marginal thermal advantage in high-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the LB11876-TLM-E directly replace the LB1876-TLM-E in existing designs?

A: Direct replacement is not possible due to fundamental architectural differences. The LB1876-TLM-E provides fully integrated control and power stages, while the LB11876-TLM-E functions as a pre-driver requiring external power stage components. Additionally, the voltage supply ranges differ significantly (9.5V ~ 28V versus 4.5V ~ 5.5V, 8V ~ 17V).

Q: What are the package compatibility considerations?

A: Both parts use 36-pin surface mount packages but with different pitch specifications. The LB1876-TLM-E uses 36-HSOP (0.311" width), while the LB11876-TLM-E uses 36-SSOP (0.220" width). PCB footprints are not interchangeable without redesign.

Q: Are there compliance or certification differences between these parts?

A: The LB1876-TLM-E carries REACH Unaffected status. The LB11876-TLM-E is ROHS3 Compliant and also REACH Unaffected. Both share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the significance of the obsolete product status?

A: Both parts are obsolete, indicating they are no longer in active production. Existing inventory may be available through authorized distributors, but long-term availability cannot be guaranteed. New designs should evaluate current-generation motor driver alternatives from onsemi or other manufacturers.

Q: How do the output current specifications compare?

A: The LB1876-TLM-E specifies 2.5A output current. The LB11876-TLM-E does not specify output current, as it functions as a pre-driver stage. External power stage selection determines the final output current capability in LB11876-based implementations.