MAX667MSA/PR+ Equivalent & Substitute Parts

Part Overview

The MAX667MSA/PR+ is a linear voltage regulator IC from Analog Devices Inc./Maxim Integrated, designed for positive adjustable (fixed) output applications with 250mA current capability in an 8-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The MAX667MSA/PR+ operates across a wide input voltage range up to 16.5V and supports adjustable or fixed output configurations from 1.3V to 16V. With integrated dropout detection, enable control, and low battery detection features, it serves applications requiring regulated power management in compact form factors.

Substiute Parts

MAX667MSA/PR+

Analog Devices Inc./Maxim IntegratedIn Stock: 1026MAX667MSA/PR+ Datasheet

Current PartRFQ

ADP3367ARZ

Analog Devices Inc.In Stock: 1468ADP3367ARZ Datasheet

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ADP667ARZ-REEL7

Analog Devices Inc.In Stock: 769ADP667ARZ-REEL7 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX667MSA/PR+ is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Output configuration must be positive
• Output type must support adjustable (fixed) operation
• Single regulator configuration
• Input voltage maximum of 16.5V
• Output voltage range from 1.3V to 16V
• Package must be 8-SOIC form factor

Functional Feature Alignment:

• Enable control and low battery detection capabilities
• Quiescent current specifications
• Dropout voltage performance

Compliance & Environmental:

• ROHS3 compliance
• MSL rating of 1 (Unlimited)
• Surface mount technology

The substitute parts identified (ADP667ARZ-REEL7 and ADP3367ARZ) maintain electrical and mechanical compatibility within these parameters while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

ADP667ARZ-REEL7 provides the closest electrical and functional match to the MAX667MSA/PR+. Both devices maintain identical output current (250mA), quiescent current (35 µA), and control feature sets. The ADP667ARZ-REEL7 is an active product with ROHS3 compliance and unlimited MSL rating, ensuring long-term availability and supply chain stability. The primary design consideration is the increased dropout voltage (0.35V @ 200mA versus 0.15V @ 200mA), which may require thermal management evaluation in power-constrained applications.

ADP3367ARZ offers an alternative with enhanced output current capability (300mA) and lower quiescent current (25 µA), suitable for applications requiring higher current delivery or improved efficiency. This device maintains full electrical compatibility within the specified voltage ranges and package form factor. The higher dropout voltage (0.5V @ 300mA) and narrower operating temperature range (-40°C ~ 85°C versus -55°C ~ 125°C) should be evaluated against application requirements.

Both substitute parts are active products from Analog Devices Inc., ensuring procurement availability and technical support continuity.

Frequently Asked Questions (FAQ)

Q: Can ADP667ARZ-REEL7 directly replace MAX667MSA/PR+ in existing designs?

A: ADP667ARZ-REEL7 maintains identical electrical specifications for output current, quiescent current, and control features. The primary design parameter difference is dropout voltage (0.35V versus 0.15V at 200mA). Direct replacement is feasible for applications where the increased dropout voltage does not compromise system performance or thermal margins.

Q: What is the key difference between ADP667ARZ-REEL7 and ADP3367ARZ?

A: ADP3367ARZ provides 300mA output current versus 250mA in ADP667ARZ-REEL7, with lower quiescent current (25 µA versus 35 µA). ADP3367ARZ is suitable for higher current applications or designs prioritizing reduced standby power consumption. Both maintain the same 8-SOIC package and voltage specifications.

Q: Are there temperature range limitations with the substitute parts?

A: Both ADP667ARZ-REEL7 and ADP3367ARZ operate across -40°C ~ 85°C, compared to the MAX667MSA/PR+ range of -55°C ~ 125°C. Applications requiring operation below -40°C or above 85°C must retain the original MAX667MSA/PR+ or identify alternative solutions outside this substitute group.

Q: Do the substitute parts maintain the same package footprint?

A: Yes. Both ADP667ARZ-REEL7 and ADP3367ARZ use the 8-SOIC (0.154", 3.90mm Width) package, ensuring PCB layout compatibility without redesign.

Q: Are all parts ROHS3 compliant?

A: Yes. MAX667MSA/PR+, ADP667ARZ-REEL7, and ADP3367ARZ are all ROHS3 compliant with MSL rating of 1 (Unlimited), meeting environmental and regulatory requirements.

Q: Which substitute should be selected for new designs?

A: Selection depends on application requirements. For designs matching the original 250mA specification, ADP667ARZ-REEL7 is the primary choice. For applications benefiting from higher current capability or lower quiescent current, ADP3367ARZ is appropriate. Both are active products with established supply chains.