MAX667ESA Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The MAX667ESA is a linear voltage regulator IC from Analog Devices Inc./Maxim Integrated, classified as a positive adjustable (fixed) output power management IC with 250mA output current capability in an 8-SOIC surface mount package. This part is currently marked as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and production continuity. The MAX667ESA provides dropout detection, enable control, and low battery detection features suitable for applications requiring regulated positive voltage outputs in the 1.3V to 16V range.

Substiute Parts

MAX667ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 3144MAX667ESA Datasheet

Current PartRFQ

MAX667ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 5759MAX667ESA+ 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

Substitution of the MAX667ESA is determined by the following critical parameters: output configuration (positive), output type (adjustable/fixed), package type (8-SOIC), input voltage range (16.5V maximum), output voltage range (1.3V to 16V), and output current capability (minimum 250mA). Control features including dropout detection, enable functionality, and low battery detection are functional requirements for direct substitution.

Substitute parts are grouped into two categories:

Direct Equivalents (Same Output Current - 250mA): Parts maintaining identical 250mA output current specifications with matching electrical characteristics and control features.

Functional Equivalents (Higher Output Current - 300mA): Parts with increased output current capability (300mA) that maintain compatibility with the same voltage ranges, package, and control feature set, suitable for applications where additional current margin is acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): MAX667ESA+ is the primary direct substitute, offering identical electrical performance with 250mA output current while maintaining active product status and ROHS3 compliance. This part is recommended for applications requiring exact specification matching with modern RoHS compliance.

For Active Product Continuity: ADP667ARZ-REEL7 provides direct electrical equivalence to the MAX667ESA with identical 250mA output current, dropout voltage, and control features. This part carries active product status and ROHS3 compliance, suitable for new designs or production transitions requiring long-term component availability.

For Enhanced Current Capability: ADP3367ARZ and ADP3367ARZ-REEL7 offer increased output current (300mA) with improved quiescent current characteristics (25 µA versus 35 µA) and reduced maximum supply current (14 mA versus 20 mA). These parts are suitable for applications where additional current margin or lower standby power consumption provides design benefits. The increased dropout voltage specification (0.5V @ 300mA versus 0.35V @ 200mA) must be evaluated against application requirements.

All substitute parts maintain the 8-SOIC package footprint, identical voltage ranges, and surface mount compatibility. RoHS compliance status differs between the obsolete MAX667ESA and all active substitutes, which carry ROHS3 compliance certification.

Frequently Asked Questions (FAQ)

Q: Can MAX667ESA+ be used as a direct replacement for MAX667ESA?

A: Yes. MAX667ESA+ maintains identical electrical specifications including 250mA output current, 0.35V dropout voltage at 200mA, 35 µA quiescent current, and all control features (dropout detector, enable, low battery detection). The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant). Pin-to-pin compatibility and package dimensions are identical.

Q: What is the difference between ADP667ARZ-REEL7 and MAX667ESA?

A: ADP667ARZ-REEL7 provides electrical equivalence with identical 250mA output current, 0.35V dropout voltage, and control features. The primary differences are manufacturer designation (ADP versus MAX series), product status (active), RoHS compliance (ROHS3), and packaging format (Cut Tape & Digi-Reel versus standard tube). Electrical performance and pin compatibility are equivalent.

Q: Can ADP3367ARZ replace MAX667ESA in all applications?

A: ADP3367ARZ maintains voltage range compatibility and package footprint but differs in output current (300mA versus 250mA), dropout voltage (0.5V @ 300mA versus 0.35V @ 200mA), and quiescent current (25 µA versus 35 µA). Applications operating at or near 250mA output current must evaluate the increased dropout voltage specification. The higher current capability and lower quiescent current provide benefits for applications with different operating points.

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, maintaining identical PCB footprint and mounting compatibility with MAX667ESA.

Q: What is the significance of the packaging designation (Tube versus Cut Tape & Digi-Reel)?

A: Packaging designation indicates the form factor for component delivery and handling. Tube packaging is standard for general distribution. Cut Tape & Digi-Reel packaging is optimized for automated assembly processes. Electrical specifications and component performance are identical; packaging selection depends on manufacturing process requirements and supply chain preferences.

Q: Does RoHS compliance affect electrical performance?

A: RoHS compliance relates to material composition and environmental standards, not electrical performance. All ROHS3 compliant substitutes maintain identical electrical specifications to the original MAX667ESA. RoHS compliance is a regulatory and supply chain consideration for new designs and production environments with environmental requirements.