MAX667CSA Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The MAX667CSA is a linear voltage regulator IC from Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) component. This device functions as a positive adjustable (fixed) output regulator with 250mA output current capability in an 8-SOIC surface mount package. The MAX667CSA is currently listed as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

MAX667CSA

Analog Devices Inc./Maxim IntegratedIn Stock: 1540MAX667CSA Datasheet

Current PartRFQ

MAX667CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2102MAX667CSA+ Datasheet

DirectRFQ

ADP3367ARZ

Analog Devices Inc.In Stock: 1468ADP3367ARZ Datasheet

MFR RecommendedRFQ

ADP3367ARZ-REEL7

Analog Devices Inc.In Stock: 3309ADP3367ARZ-REEL7 Datasheet

MFR RecommendedRFQ

ADP667ARZ-REEL7

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX667CSA are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Output Configuration: Positive
• Output Type: Adjustable (Fixed)
• Number of Regulators: 1
• Voltage - Input (Max): 16.5V
• Voltage - Output Range: 1.3V to 16V
• Mounting Type: Surface Mount

Acceptable Variation Parameters:

• Current - Output: 250mA or higher
• Voltage Dropout: 0.35V @ 200mA or lower
• Current - Quiescent (Iq): 35 µA or lower
• Operating Temperature: Extended range acceptable

Substitute parts are grouped into two categories:

Direct Equivalents (Same Base Specifications):

• MAX667CSA+ (Active product status, identical electrical specifications, improved RoHS compliance)
• ADP667ARZ-REEL7 (Identical output current, same dropout voltage, extended temperature range)

Functional Equivalents (Enhanced Specifications):

• ADP3367ARZ (Higher output current 300mA, lower quiescent current, extended temperature range)
• ADP3367ARZ-REEL7 (Higher output current 300mA, lower quiescent current, extended temperature range, reel packaging)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, Identical Electrical Performance):

MAX667CSA+ is the primary recommended substitute. This part maintains identical electrical specifications and package configuration while offering active product status and ROHS3 compliance. The transition from RoHS non-compliant to ROHS3 compliant status aligns with current regulatory requirements and supply chain standards.

ADP667ARZ-REEL7 provides an alternative direct replacement with identical output current and dropout voltage specifications. This part extends the operating temperature range to -40°C ~ 85°C, providing enhanced thermal performance for applications requiring wider temperature operation. The extended temperature range does not compromise compatibility with designs specified for 0°C ~ 70°C operation.

For Enhanced Performance Applications:

ADP3367ARZ and ADP3367ARZ-REEL7 offer increased output current capability (300mA versus 250mA) and reduced quiescent current (25 µA versus 35 µA). These parts are suitable for applications where higher output current capacity or lower standby power consumption provides system benefits. The extended operating temperature range (-40°C ~ 85°C) supports broader deployment scenarios. The higher dropout voltage specification (0.5V @ 300mA) must be evaluated against system headroom requirements.

All substitute parts maintain identical package geometry, pinout, and control feature compatibility, ensuring direct PCB-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can MAX667CSA+ be used as a direct replacement for MAX667CSA?

A: Yes. MAX667CSA+ is a direct substitute with identical electrical specifications, package configuration, and pinout. The primary differences are active product status and ROHS3 compliance. No circuit modifications are required.

Q: What is the difference between ADP667ARZ-REEL7 and MAX667CSA?

A: ADP667ARZ-REEL7 maintains identical output current (250mA) and dropout voltage (0.35V @ 200mA) specifications. The primary differences are extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), active product status, and ROHS3 compliance. Packaging format differs (reel versus tube), but the component itself is electrically equivalent.

Q: When should ADP3367ARZ be selected instead of MAX667CSA?

A: ADP3367ARZ is appropriate when applications require higher output current capacity (300mA) or lower quiescent current consumption (25 µA). The increased dropout voltage (0.5V @ 300mA) must be accommodated by system input voltage headroom. Extended operating temperature range (-40°C ~ 85°C) supports wider deployment conditions.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package. PCB footprints are identical, enabling direct component substitution without layout changes.

Q: What is the significance of ROHS3 compliance for substitute selection?

A: ROHS3 compliance indicates conformance to current environmental and regulatory standards. Substitute parts with ROHS3 compliance (MAX667CSA+, ADP667ARZ-REEL7, ADP3367ARZ, ADP3367ARZ-REEL7) are preferred for new designs and ongoing production to ensure supply chain continuity and regulatory alignment.

Q: Can ADP3367ARZ be used in applications designed for MAX667CSA?

A: ADP3367ARZ is functionally compatible with MAX667CSA designs. The higher output current (300mA) and lower quiescent current (25 µA) provide enhanced performance. The increased dropout voltage (0.5V @ 300mA) requires verification that system input voltage headroom remains adequate. Extended operating temperature range provides additional operational margin.

Q: What packaging options are available for substitute parts?

A: MAX667CSA+ is available in Tube packaging. ADP667ARZ-REEL7 and ADP3367ARZ-REEL7 are supplied in Cut Tape (CT) & Digi-Reel® format. ADP3367ARZ is available in Tube packaging. Component selection should account for procurement and assembly process requirements.