MP86884DQKTE-LF-Z Equivalent & Substitute Parts

Part Overview

The MP86884DQKTE-LF-Z is a half bridge driver IC from Monolithic Power Systems Inc., designed for general purpose power MOSFET applications with a rated output current of 55A. This device operates within a supply voltage range of 4.5V to 5.5V and supports inductive load switching with PWM interface control. The component is packaged in a 34-TQFN (6x6) form factor and includes current limiting fault protection.

The MP86884DQKTE-LF-Z carries a product status of "Not For New Designs," indicating that Monolithic Power Systems Inc. has transitioned this part to end-of-life status. Organizations requiring this functionality for new or ongoing production must identify suitable substitute components that maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

MP86884DQKTE-LF-Z

Monolithic Power Systems Inc.In Stock: 997MP86884DQKTE-LF-Z Datasheet

Current PartRFQ

MP86945-AGVT-Z

Monolithic Power Systems Inc.In Stock: 40831MP86945-AGVT-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP86884DQKTE-LF-Z is determined by the following critical parameters:

Output configuration must remain half bridge topology to maintain circuit-level compatibility with existing driver stage designs. The output current rating of 55A establishes the minimum performance threshold; substitute parts must meet or exceed this specification to ensure safe operation under rated load conditions. Supply voltage range (4.5V to 5.5V) and load voltage range (4.5V to 14V) define the operational envelope and must be maintained or expanded in substitute components. Operating temperature range (-40°C to 125°C) ensures thermal compatibility with the target application environment. PWM interface control and inductive load support are functional requirements that substitute parts must preserve. Current limiting fault protection is a safety-critical feature that must be present in any equivalent component.

Packaging considerations include surface mount technology and the 34-TQFN form factor, which define PCB layout and thermal management characteristics. RoHS3 compliance and MSL rating ensure regulatory and manufacturing process compatibility.

Parameter Comparison

Engineering Selection Recommendations

The MP86945-AGVT-Z is the manufacturer-recommended substitute for the MP86884DQKTE-LF-Z. Both components are manufactured by Monolithic Power Systems Inc. and share identical RoHS3 compliance and MSL rating specifications, ensuring regulatory and manufacturing process compatibility.

The MP86945-AGVT-Z carries an Active product status, confirming ongoing manufacturer support and availability for new production designs. The output current rating of 60A exceeds the original 55A specification, providing additional performance margin. Both devices maintain half-bridge output configuration and surface mount technology.

The primary design consideration is the package transition from 34-TQFN (6x6) to 25-TQFN (4x5). This change requires PCB layout modification and thermal management re-evaluation. The smaller package footprint may improve board density but requires verification of thermal dissipation characteristics for the target application.

Frequently Asked Questions (FAQ)

Q: Can the MP86945-AGVT-Z be used as a direct pin-for-pin replacement?

A: No. The MP86945-AGVT-Z uses a 25-TQFN (4x5) package, while the MP86884DQKTE-LF-Z uses a 34-TQFN (6x6) package. Pin count and pinout differ, requiring schematic and PCB redesign. Consult the respective datasheets for pinout mapping and functional equivalence verification.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Half-bridge output configuration, output current rating (minimum 55A), supply voltage range (4.5V to 5.5V), load voltage range (4.5V to 14V), PWM interface control, inductive load support, and current limiting fault protection are the primary electrical criteria. The MP86945-AGVT-Z meets these requirements with a 60A output current rating.

Q: Are there thermal considerations when transitioning from the 34-TQFN to the 25-TQFN package?

A: Yes. The 25-TQFN (4x5) package has a smaller footprint than the 34-TQFN (6x6). Thermal performance depends on PCB copper area, via placement, and thermal management design. Verify that the thermal design of the target application can accommodate the smaller package before implementation.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the MP86884DQKTE-LF-Z and MP86945-AGVT-Z are ROHS3 compliant with MSL rating 2 (1 Year), ensuring equivalent regulatory and manufacturing process compatibility.

Q: Why is the MP86884DQKTE-LF-Z marked as "Not For New Designs"?

A: This status indicates that Monolithic Power Systems Inc. has transitioned the part to end-of-life. The manufacturer recommends the MP86945-AGVT-Z for new production designs. Existing inventory of the MP86884DQKTE-LF-Z may be available for legacy system support or maintenance applications.