MP3427GL-Z Equivalent & Substitute Parts

Part Overview

The MP3427GL-Z is a boost switching regulator IC manufactured by Monolithic Power Systems, designed for step-up voltage conversion applications. It delivers 17A switch current with adjustable positive output in a 22-PowerVFQFN surface mount package. The device operates across an input voltage range of 3V to 8V with output capability from 3V to 10V at a switching frequency of 450kHz to 690kHz.

This part carries a "Not For New Designs" product status, making equivalent substitutes necessary for ongoing production and new design implementations. The MP3427GL-Z remains available with 3474 units in current inventory.

Substiute Parts

MP3427GL-Z

Monolithic Power SystemsIn Stock: 3584MP3427GL-Z Datasheet

Current PartRFQ

TPS61088RHLT

Texas InstrumentsIn Stock: 1476TPS61088RHLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP3427GL-Z is determined by the following core parameters:

• Topology: Boost switching regulator configuration
• Output Type: Adjustable positive voltage output
• Number of Outputs: Single output channel
• Input Voltage Compatibility: Minimum 3V input support
• Output Voltage Range: Minimum 3V to maximum 10V capability
• Current Delivery: Minimum 10A output current capacity
• Package Type: Surface mount QFN variant
• Compliance: ROHS3 and REACH compliance maintained

The TPS61088RHLT qualifies as a functional equivalent based on matching topology, output configuration, adjustable output type, and compliance certifications. Differences in switching frequency range, maximum output current, and package dimensions are noted but do not preclude substitution when application requirements permit.

Parameter Comparison

Engineering Selection Recommendations

The TPS61088RHLT serves as an active substitute for the MP3427GL-Z based on the following factors:

Product Status Alignment: The TPS61088RHLT maintains Active product status, making it suitable for new design implementations and ongoing production where the MP3427GL-Z is restricted.

Compliance Certifications: Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across manufacturing environments.

Functional Equivalence: Both devices implement boost topology with adjustable positive output configuration, single output channel, and surface mount QFN packaging. Synchronous rectification is present in both designs.

Parameter Deviations: The TPS61088RHLT exhibits lower maximum output current (10A versus 17A) and different operating temperature range (TA -40°C to 85°C versus TJ -40°C to 125°C). Input voltage maximum extends to 12V compared to 8V, and output voltage minimum rises to 4.5V compared to 3V. These differences require application-level validation.

Package Considerations: Physical package dimensions differ (20-VFQFN 4.6x4.5mm versus 22-PowerVFQFN 3x4mm), necessitating PCB layout review and thermal management assessment.

Frequently Asked Questions (FAQ)

Q: Can the TPS61088RHLT directly replace the MP3427GL-Z in existing designs?

A: Direct replacement requires validation of three factors: output current requirement (TPS61088RHLT maximum 10A versus MP3427GL-Z 17A), minimum output voltage requirement (TPS61088RHLT minimum 4.5V versus MP3427GL-Z 3V), and PCB layout compatibility due to different package dimensions and pin configurations.

Q: What is the primary reason for seeking substitutes for the MP3427GL-Z?

A: The MP3427GL-Z carries "Not For New Designs" product status, indicating the manufacturer has discontinued active support. The TPS61088RHLT, with Active status, provides continuity for production and new development.

Q: How do the switching frequency ranges compare?

A: The MP3427GL-Z operates at 450kHz to 690kHz, while the TPS61088RHLT operates at 200kHz to 2.2MHz. The TPS61088RHLT offers wider frequency range and lower minimum frequency, which may affect EMI characteristics and component selection in the power stage.

Q: Are there thermal operating range differences?

A: Yes. The MP3427GL-Z specifies junction temperature (TJ) range of -40°C to 125°C, while the TPS61088RHLT specifies ambient temperature (TA) range of -40°C to 85°C. These represent different measurement points and require thermal analysis for equivalent performance validation.

Q: What package compatibility issues should be considered?

A: The MP3427GL-Z uses 22-PowerVFQFN (3x4mm) while the TPS61088RHLT uses 20-VFQFN with exposed pad (4.6x4.5mm). Pin count differs (22 versus 20), requiring schematic and PCB redesign. Thermal pad design and via placement strategies may differ between packages.

Q: Do both devices support the same input voltage range?

A: No. The MP3427GL-Z accepts 3V to 8V input, while the TPS61088RHLT accepts 2.7V to 12V input. The TPS61088RHLT provides broader input range compatibility but requires validation that output voltage regulation meets application requirements across the extended input range.