MP8843GG-Z Equivalent & Substitute Parts

Part Overview

The MP8843GG-Z is a buck switching regulator IC from Monolithic Power Systems Inc., designed for positive adjustable output voltage regulation with a maximum output current of 3A. This device operates across an input voltage range of 2.6V to 6V and provides a programmable output voltage from 0.6V to 1.125V. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. For applications requiring continued support or new designs, equivalent substitute parts with compatible electrical and mechanical characteristics are available.

Substiute Parts

MP8843GG-Z

Monolithic Power Systems Inc.In Stock: 20149MP8843GG-Z Datasheet

Current PartRFQ

MP8847GD-P

Monolithic Power Systems Inc.In Stock: 987MP8847GD-P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The MP8847GD-P qualifies as a substitute for the MP8843GG-Z based on the following substitution criteria:

Compatible Electrical Parameters:

• Both devices function as buck switching regulators with positive adjustable (programmable) output voltage
• Both support a single output configuration
• Input voltage range overlap: MP8843GG-Z (2.6V–6V) and MP8847GD-P (2.7V–6V) are compatible for applications within 2.7V–6V
• Output voltage range overlap: Both support minimum output of 0.6V; MP8847GD-P extends to 1.23V (vs. 1.125V for MP8843GG-Z)
• Both include synchronous rectification for improved efficiency
• Both operate across the same temperature range: -40°C to 125°C (TJ)

Key Differentiators:

• Current capacity: MP8847GD-P provides 6A output current, exceeding the 3A capability of MP8843GG-Z
• Switching frequency: MP8847GD-P operates at fixed 1.25MHz (vs. 1MHz–2MHz range for MP8843GG-Z)
• Package: MP8847GD-P uses 14-VFQFN (2x3) vs. 12-PowerVFQFN (2x2) for MP8843GG-Z
• Product status: MP8847GD-P is Active, while MP8843GG-Z is Not For New Designs

Parameter Comparison

Engineering Selection Recommendations

The MP8847GD-P is suitable as a substitute for the MP8843GG-Z in applications where the following conditions are met:

Electrical Compatibility:

• Input voltage requirement is within 2.7V to 6V range
• Output voltage requirement is within 0.6V to 1.23V range
• Output current requirement does not exceed 6A

Design Considerations:

• The MP8847GD-P provides higher current capacity (6A vs. 3A), making it suitable for applications requiring equal or lower current draw
• Fixed switching frequency of 1.25MHz differs from the variable 1MHz–2MHz range of MP8843GG-Z; circuit design must accommodate this fixed frequency
• Package footprint change from 12-PowerVFQFN (2x2) to 14-VFQFN (2x3) requires PCB layout modification

Compliance & Status:

• Both devices are ROHS3 compliant and REACH unaffected
• MP8847GD-P holds Active product status, ensuring continued availability and support
• MP8843GG-Z is Not For New Designs; new applications should utilize MP8847GD-P or equivalent active alternatives

Frequently Asked Questions (FAQ)

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

A: Electrical substitution is possible within the specified voltage and current ranges. However, the package change from 12-PowerVFQFN to 14-VFQFN requires PCB layout redesign. The fixed switching frequency of MP8847GD-P (1.25MHz) differs from the variable frequency range of MP8843GG-Z; circuit design must be evaluated for compatibility with this fixed frequency.

Q: What is the minimum input voltage difference between these parts?

A: MP8843GG-Z supports input voltage down to 2.6V, while MP8847GD-P supports down to 2.7V. For applications requiring operation below 2.7V, MP8843GG-Z is required. For applications within 2.7V–6V, both parts are compatible.

Q: Does the higher current rating of MP8847GD-P affect thermal performance?

A: The MP8847GD-P is rated for 6A output current compared to 3A for MP8843GG-Z. Both devices operate across the same temperature range (-40°C to 125°C). Thermal performance depends on application-specific load conditions and PCB thermal design; the higher current rating does not inherently degrade thermal characteristics.

Q: Are there any compliance or certification differences?

A: Both devices are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is identical at MSL 1 (Unlimited) for both parts. No compliance or certification differences exist between the two devices.

Q: Why is MP8843GG-Z marked as "Not For New Designs"?

A: MP8843GG-Z has reached end-of-life status. Monolithic Power Systems Inc. recommends MP8847GD-P and equivalent active alternatives for new designs to ensure long-term availability and continued manufacturer support.