LB11852FV-TLM-H Equivalent & Substitute Parts

Part Overview

The LB11852FV-TLM-H is a motor driver IC manufactured by onsemi, designed for brushless DC (BLDC) motor speed control applications. This device functions as a PWM controller with pre-driver half-bridge output configuration, operating across dual voltage supply ranges of 4.5V–5.5V and 5.5V–16V. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

LB11852FV-TLM-H

onsemiIn Stock: 46252LB11852FV-TLM-H Datasheet

Current PartRFQ

LV88551JA-AH

onsemiIn Stock: 708LV88551JA-AH Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LB11852FV-TLM-H are identified based on the following critical parameters that determine functional compatibility:

Motor control capability for brushless DC (BLDC) applications, PWM interface support, surface mount packaging in 20-LFSOP form factor, and operating voltage ranges that overlap or encompass the original specification. The LV88551JA-AH qualifies as a substitute based on these criteria: it supports BLDC motor control, employs PWM interface, utilizes identical 20-LFSOP packaging, and operates within the 6V–16V range, which covers the upper voltage band of the original part.

Parameter Comparison

Engineering Selection Recommendations

The LV88551JA-AH presents a viable substitute for the LB11852FV-TLM-H in applications operating within the 6V–16V supply range. Both parts share identical packaging, mounting technology, and regulatory compliance status. The substitute offers an extended operating temperature range (-40°C to 105°C versus -30°C to 95°C), providing improved thermal margin in demanding environments. However, the substitute does not support the 4.5V–5.5V lower voltage band of the original part; designs requiring operation below 6V require alternative solutions. Both parts carry obsolete status and identical moisture sensitivity ratings, indicating equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the LV88551JA-AH replace the LB11852FV-TLM-H in all applications?

A: The LV88551JA-AH is compatible with applications operating at 6V or higher. Designs requiring the 4.5V–5.5V supply range of the original part cannot use this substitute without additional voltage regulation.

Q: Are the packages physically identical?

A: Yes. Both parts use the 20-LFSOP package with 0.173" width and 4.40mm body dimension, enabling direct PCB footprint compatibility.

Q: What is the functional difference between these parts?

A: The LB11852FV-TLM-H functions as a speed controller with pre-driver half-bridge output. The LV88551JA-AH functions as a multiphase motor driver with power MOSFET technology. Functional equivalence depends on circuit topology and control requirements.

Q: Do both parts have the same moisture sensitivity requirements?

A: Yes. Both parts carry MSL 3 rating (168 hours), requiring identical handling, storage, and reflow procedures.

Q: Are there compliance differences between these parts?

A: Both parts are REACH Unaffected and classified as EAR99 for export control purposes. The substitute carries RoHS3 compliance, while the original part status is not specified in available data.