MP6551GQB-Z Equivalent & Substitute Parts

Part Overview

The MP6551GQB-Z is an active, fully integrated bipolar motor driver from Monolithic Power Systems Inc. designed for brushed DC and stepper motor applications. This Power MOSFET logic device operates across a 2.5V to 14V supply range with 5A output current capability in a half-bridge configuration. The component is housed in a 14-QFN (2.5x3) surface mount package and is ROHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts are identified when packaging format differs while all critical electrical and mechanical parameters remain identical, enabling equivalent functional performance in motor driver applications.

Substiute Parts

MP6551GQB-Z

Monolithic Power Systems Inc.In Stock: 5061MP6551GQB-Z Datasheet

Current PartRFQ

MP6551GQB-P

Monolithic Power Systems Inc.In Stock: 1579MP6551GQB-P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP6551GQB-Z are determined by equivalence across all electrical specifications, mechanical dimensions, and compliance certifications. The primary differentiator between the main part and its substitute is the packaging format: Tape & Reel (TR) versus Cut Tape (CT).

Both the MP6551GQB-Z and MP6551GQB-P share identical electrical performance parameters:

• 5A output current capability
• 2.5V to 14V supply voltage range
• Half-bridge motor driver topology
• Bipolar stepper and brushed DC motor support
• -40°C to 125°C operating temperature range
• 14-QFN (2.5x3) physical package dimensions
• Power MOSFET technology with integrated control and power stages

The substitution is valid because packaging format does not affect component functionality, electrical characteristics, or thermal performance. Both formats utilize the same die, pinout, and performance envelope.

Parameter Comparison

Engineering Selection Recommendations

Both MP6551GQB-Z and MP6551GQB-P are active products from Monolithic Power Systems Inc. with identical ROHS3 compliance and unlimited moisture sensitivity ratings. Selection between these parts is determined by supply chain requirements and procurement format preferences rather than electrical or thermal performance differences.

The MP6551GQB-Z in Tape & Reel format is suitable for high-volume automated assembly operations where reel-based component feeding is standard. The MP6551GQB-P in Cut Tape format accommodates lower-volume production runs, prototyping, or manual assembly workflows.

Both parts maintain full functional equivalence across all motor driver applications within the specified voltage and current operating ranges. No design modifications, PCB layout adjustments, or firmware changes are required when substituting between these part numbers.

Frequently Asked Questions (FAQ)

Q: Are MP6551GQB-Z and MP6551GQB-P electrically identical?

A: Yes. Both parts contain identical die, pinout configuration, electrical specifications, and performance characteristics. The only difference is the packaging format: Tape & Reel versus Cut Tape.

Q: Can I substitute MP6551GQB-P for MP6551GQB-Z in production assembly?

A: Yes, provided your assembly equipment supports Cut Tape format feeding. No circuit design changes are required. Verify that your pick-and-place system is configured for the appropriate tape format and reel specifications.

Q: Do both parts have the same thermal performance?

A: Yes. Both parts use the same 14-QFN (2.5x3) package with identical thermal characteristics. Operating temperature range is -40°C to 125°C (TJ) for both variants.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel format supplies components on continuous carrier tape wound on reels, optimized for automated high-speed assembly. Cut Tape format supplies components on tape segments cut to specific lengths, suitable for lower-volume or manual assembly processes.

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

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL rating of 1 (Unlimited). Regulatory and environmental compliance is equivalent.

Q: Can I use either part for bipolar stepper motor applications?

A: Yes. Both MP6551GQB-Z and MP6551GQB-P support bipolar stepper motor control with half-bridge output configuration and 5A current capability.

Q: What supply voltage range do both parts support?

A: Both parts operate across 2.5V to 14V supply voltage range, supporting a wide variety of motor control applications from low-voltage battery-powered systems to higher-voltage industrial configurations.