LB11660RV-W-AH Equivalent & Substitute Parts

Part Overview

The LB11660RV-W-AH is a fully integrated motor driver IC manufactured by onsemi, designed for brushless DC (BLDC) motor applications. This device integrates both control and power stage functionality in a 16-SSOP package, operating across a 4V to 15V supply voltage range with 1.5A output current capability. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

LB11660RV-W-AH

onsemiIn Stock: 1051LB11660RV-W-AH Datasheet

Current PartRFQ

BD61245EFV-E2

Rohm SemiconductorIn Stock: 50116BD61245EFV-E2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LB11660RV-W-AH is determined by the following critical parameters:

Motor Driver Type & Integration: Both the main part and substitute must provide fully integrated motor driver functionality combining control and power stage in a single IC for BLDC motor applications.

Supply Voltage Range: The substitute must operate within or encompass the 4V to 15V supply voltage specification of the original part.

Output Current Rating: The substitute must meet or exceed the 1.5A output current requirement.

Package Compatibility: Surface mount packaging with compatible pinout and footprint dimensions (16-pin package, 4.40mm width class).

Interface & Control: PWM-based control interface capability for motor speed and direction control.

Compliance & Reliability: RoHS3 compliance and equivalent moisture sensitivity rating ensure regulatory and environmental consistency.

The BD61245EFV-E2 qualifies as a substitute based on these parameters: it provides fully integrated BLDC motor driver functionality, operates across a 4V to 16V supply range (encompassing the original specification), delivers 1.8A output current (exceeding the 1.5A requirement), uses a compatible 16-pin surface mount package (16-VSSOP, 4.40mm width), supports PWM control, and maintains ROHS3 compliance with equivalent MSL rating.

Parameter Comparison

Engineering Selection Recommendations

The BD61245EFV-E2 is the qualified substitute for the obsolete LB11660RV-W-AH. Selection is supported by the following engineering criteria:

Product Status & Availability: The LB11660RV-W-AH is obsolete, while the BD61245EFV-E2 maintains active production status with substantial inventory availability (50,100 pcs), ensuring long-term supply chain continuity.

Regulatory Compliance: Both parts maintain ROHS3 compliance and equivalent MSL ratings, satisfying environmental and reliability requirements without additional qualification.

Electrical Performance: The BD61245EFV-E2 exceeds the electrical specifications of the original part: supply voltage range extends to 16V (versus 15V maximum), output current increases to 1.8A (versus 1.5A), and operating temperature range expands to -40°C to 105°C (versus -30°C to 95°C).

Package Compatibility: Both devices use 16-pin surface mount packages with identical 4.40mm width, enabling direct PCB footprint compatibility. The BD61245EFV-E2 includes an exposed pad for enhanced thermal performance.

Functional Equivalence: Both parts provide fully integrated BLDC motor driver functionality with PWM control interface, satisfying the control and power stage requirements of the original application.

Frequently Asked Questions (FAQ)

Q: Can the BD61245EFV-E2 directly replace the LB11660RV-W-AH on existing PCBs?

A: Yes. Both parts use 16-pin surface mount packages with identical 4.40mm width dimensions. PCB footprints are compatible. The BD61245EFV-E2 includes an exposed pad for thermal management, which may be left unconnected if the original design does not accommodate it.

Q: What are the key differences between these two motor drivers?

A: The primary differences are technology (Bipolar versus DMOS), output configuration (High Side versus Half Bridge), and performance specifications. The BD61245EFV-E2 delivers higher output current (1.8A versus 1.5A), extended supply voltage range (4V-16V versus 4V-15V), and wider operating temperature range (-40°C to 105°C versus -30°C to 95°C).

Q: Are there any interface compatibility concerns?

A: The LB11660RV-W-AH supports both Parallel and PWM interfaces, while the BD61245EFV-E2 supports PWM control. If the original design uses parallel interface functionality, alternative solutions must be evaluated. For PWM-based designs, interface compatibility is maintained.

Q: Does the substitute part require PCB layout modifications?

A: The exposed pad on the BD61245EFV-E2 should be connected to ground for optimal thermal performance. If the original PCB design does not include a ground connection for this pad, it may be left unconnected without affecting electrical functionality, though thermal performance may be reduced.

Q: What is the impact of the technology change from Bipolar to DMOS?

A: DMOS technology in the BD61245EFV-E2 typically provides lower on-resistance and improved thermal characteristics compared to Bipolar technology. This results in reduced power dissipation and improved efficiency, making it a performance-equivalent or superior substitute.

Q: Are both parts subject to the same moisture sensitivity requirements?

A: Yes. Both parts carry MSL 3 (168 Hours) ratings, requiring identical handling, storage, and reflow procedures during manufacturing and assembly.