MP1567DQ-LF-Z Equivalent & Substitute Parts

Part Overview

The MP1567DQ-LF-Z is a buck switching regulator IC from Monolithic Power Systems Inc., designed for positive adjustable step-down voltage regulation with 1.2A output current capability. This device operates across a 2.6V to 6V input range and delivers adjustable output voltage from 0.9V to 4.5V at 800kHz switching frequency with integrated synchronous rectification.

The MP1567DQ-LF-Z carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. For new circuit designs or long-term production requirements, identifying functionally compatible alternatives is essential to ensure design continuity and supply chain reliability.

Substiute Parts

MP1567DQ-LF-Z

Monolithic Power Systems Inc.In Stock: 25175MP1567DQ-LF-Z Datasheet

Current PartRFQ

MP2162AGQH-Z

Monolithic Power SystemsIn Stock: 15144MP2162AGQH-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP1567DQ-LF-Z is determined by the following critical parameters:

• Topology & Function: Buck (step-down) switching regulator with positive adjustable output
• Output Configuration: Single output, adjustable voltage regulation
• Input Voltage Range: Minimum 2.6V, maximum 6V
• Output Voltage Range: Minimum 0.9V, maximum 4.5V
• Output Current Capability: 1.2A nominal
• Synchronous Rectification: Integrated synchronous rectifier required
• Mounting & Package: Surface mount technology, QFN package family
• Compliance: ROHS3 compliant, REACH unaffected

The MP2162AGQH-Z qualifies as a manufacturer-recommended substitute based on functional equivalence across these core parameters, with enhanced specifications in output current capacity and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The MP2162AGQH-Z is the manufacturer-recommended substitute for the MP1567DQ-LF-Z and is designated as an active product with ongoing manufacturer support. Selection of the MP2162AGQH-Z is appropriate for the following scenarios:

New Design Implementation: The MP2162AGQH-Z is the preferred choice for new circuit designs. Its active product status ensures long-term availability, technical support, and supply chain continuity. The device meets all ROHS3 compliance and REACH requirements equivalent to the original part.

Enhanced Performance Envelope: The MP2162AGQH-Z provides superior specifications including 2A output current (versus 1.2A), extended operating temperature range to 125°C junction temperature, and wider output voltage adjustment range (0.6V to 6V). These enhancements support broader application requirements without functional compromise.

Package Footprint Consideration: The MP2162AGQH-Z uses an 8-VFDFN package versus the 10-VFDFN of the original part. PCB layout modification is required for substitution. The smaller package footprint may provide space optimization benefits in constrained designs.

Supply Chain Reliability: With 15,114 pieces in current inventory and active manufacturer status, the MP2162AGQH-Z provides superior supply chain security compared to the obsolete MP1567DQ-LF-Z.

Frequently Asked Questions (FAQ)

Q: Can the MP2162AGQH-Z directly replace the MP1567DQ-LF-Z without circuit modification?

A: Functional substitution is possible, but PCB layout redesign is required due to different package footprints (8-VFDFN versus 10-VFDFN). The electrical characteristics are compatible for applications within the MP1567DQ-LF-Z's original operating parameters. Pin configuration and component placement must be verified against manufacturer datasheets before implementation.

Q: What are the key electrical differences between these parts?

A: The MP2162AGQH-Z provides higher output current capability (2A versus 1.2A), wider output voltage range (0.6V to 6V versus 0.9V to 4.5V), higher switching frequency (1.5MHz versus 800kHz), and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). These represent performance enhancements rather than limitations.

Q: Is the MP2162AGQH-Z suitable for existing production designs using the MP1567DQ-LF-Z?

A: Yes, for production continuity. The MP2162AGQH-Z meets all compliance requirements (ROHS3, REACH) and provides equivalent or superior performance. PCB layout modification is necessary due to package differences. Comprehensive design validation is recommended before production transition.

Q: What is the significance of the "Not For New Designs" status on the MP1567DQ-LF-Z?

A: This designation indicates the manufacturer has discontinued active development and support for this part. While existing inventory may be available, the MP2162AGQH-Z is the recommended path forward for new applications and long-term production requirements.

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

A: Both parts are ROHS3 compliant and REACH unaffected. Compliance certifications are functionally equivalent. The MP2162AGQH-Z, as an active product, maintains current manufacturer support for regulatory documentation and technical specifications.

Q: How does the higher switching frequency of the MP2162AGQH-Z affect circuit design?

A: The 1.5MHz switching frequency (versus 800kHz) typically results in smaller passive component values for filtering and energy storage. This may enable reduced PCB area and component count. Filter design parameters must be recalculated based on the higher frequency to maintain equivalent output ripple and transient response characteristics.