MP8843GG-P Equivalent & Substitute Parts

Part Overview

The MP8843GG-P is a buck switching regulator IC from Monolithic Power Systems designed for positive adjustable output applications. This device delivers 3A output current with an input voltage range of 2.6V to 6V and adjustable output voltage from 0.6V to 1.125V. The part operates at a switching frequency of 1MHz to 2MHz and includes synchronous rectification for improved efficiency.

The MP8843GG-P is classified as "Not For New Designs," indicating it has reached end-of-life status. For new product development, equivalent substitute parts with active product status are recommended to ensure long-term availability and continued manufacturer support.

Substiute Parts

MP8843GG-P

Monolithic Power SystemsIn Stock: 1189MP8843GG-P Datasheet

Current PartRFQ

MP8847GD-Z

Monolithic Power Systems Inc.In Stock: 36744MP8847GD-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP8843GG-P is based on the following critical parameters that define functional equivalence:

Core Functional Parameters:

• Step-down (buck) topology with positive adjustable output
• Input voltage compatibility: minimum 2.6V to 6V maximum
• Output voltage adjustability: 0.6V minimum to 1.125V maximum
• Synchronous rectification capability
• Operating temperature range: -40°C to 125°C
• Surface mount technology

Substitution Criteria: The MP8847GD-Z qualifies as a substitute because it maintains the same functional topology, output adjustability range, input voltage compatibility, synchronous rectification, and operating temperature specifications. While the MP8847GD-Z provides higher output current (6A versus 3A) and operates at a fixed switching frequency (1.25MHz versus 1MHz to 2MHz variable), these represent performance enhancements rather than incompatibilities. The higher current rating ensures the substitute can handle all applications designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs (MP8843GG-P): The MP8843GG-P remains suitable for maintenance and repair of existing products. Current inventory of 1133 pieces supports ongoing production of legacy systems. The part maintains ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

For New Designs: The MP8847GD-Z is the recommended substitute for new product development. This part carries Active product status, ensuring manufacturer support and long-term availability. The MP8847GD-Z provides identical functional characteristics with enhanced specifications: 6A output current (versus 3A), fixed 1.25MHz switching frequency, and marginally higher maximum output voltage (1.23V versus 1.125V). The larger 14-QFN package accommodates the increased current capability. Both parts maintain ROHS3 compliance and identical operating temperature ranges.

The package change from 12-QFN (2x2) to 14-QFN (2x3) requires PCB layout modification but does not affect electrical compatibility or application performance.

Frequently Asked Questions (FAQ)

Q: Can the MP8847GD-Z directly replace the MP8843GG-P without circuit modifications?

A: Electrical substitution is valid because both parts share identical input voltage ranges (2.6V/2.7V to 6V), adjustable output voltage ranges (0.6V to 1.125V/1.23V), and operating temperature specifications (-40°C to 125°C). However, the package change from 12-QFN (2x2) to 14-QFN (2x3) requires PCB layout redesign. The MP8847GD-Z's higher output current (6A versus 3A) and fixed switching frequency (1.25MHz versus 1MHz to 2MHz) do not create incompatibilities for applications designed for the original part.

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

A: The primary differences are output current rating (3A versus 6A), switching frequency (variable 1MHz to 2MHz versus fixed 1.25MHz), maximum output voltage (1.125V versus 1.23V), and package size (12-QFN versus 14-QFN). The MP8847GD-Z represents a higher-performance variant with enhanced current delivery and active product status.

Q: Is the MP8847GD-Z suitable for applications requiring the exact 3A current specification?

A: Yes. The MP8847GD-Z's 6A rating exceeds the 3A requirement, making it fully compatible with applications designed for the MP8843GG-P. Higher current capability does not create functional issues in lower-current applications.

Q: What compliance certifications apply to both parts?

A: Both the MP8843GG-P and MP8847GD-Z are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both maintain MSL 1 (unlimited moisture sensitivity level).

Q: Why is the MP8843GG-P marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status. While existing inventory supports legacy product maintenance, new designs should utilize the MP8847GD-Z to ensure continued manufacturer support and long-term component availability.