MAX603CPA Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The MAX603CPA is a linear voltage regulator IC from Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) component. It provides positive adjustable (fixed) output regulation with a 500mA current capacity in an 8-PDIP through-hole package. The device features integrated protection against overcurrent, overtemperature, and reverse polarity conditions, with an enable control feature for power management applications.

The MAX603CPA is currently listed as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

MAX603CPA

Analog Devices Inc./Maxim IntegratedIn Stock: 4087MAX603CPA Datasheet

Current PartRFQ

MAX603CPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 5643MAX603CPA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX603CPA are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Output configuration (Positive)
• Output type (Adjustable/Fixed)
• Number of regulators (1)
• Voltage specifications (Input Max: 11.5V, Output Min/Fixed: 1.25V/5V, Output Max: 11V)
• Dropout voltage (0.55V @ 500mA)
• Output current (500mA)
• Quiescent current (35 µA)
• Control features (Enable)
• Protection features (Over Current, Over Temperature, Reverse Polarity)
• Operating temperature range (0°C ~ 70°C)
• Package type (8-DIP through-hole)

The MAX603CPA+ is identified as a direct substitute based on identical electrical specifications and compatible packaging. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MAX603CPA+ is a direct functional equivalent to the MAX603CPA with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

Product Status: The MAX603CPA is obsolete, while the MAX603CPA+ maintains active product status with ongoing manufacturer support and availability.

Compliance Certification: The MAX603CPA+ is ROHS3 compliant, whereas the MAX603CPA is RoHS non-compliant. For applications subject to RoHS regulations or requiring compliance documentation, the MAX603CPA+ is the appropriate selection.

Availability and Supply Chain: The MAX603CPA+ is available in tube packaging with confirmed inventory. For new designs or production requiring component continuity, the MAX603CPA+ is the recommended choice.

Functional Compatibility: Both parts are electrically and mechanically interchangeable. Pin configuration, voltage specifications, current ratings, protection features, and operating temperature ranges are identical, enabling direct substitution in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the MAX603CPA+ be used as a direct replacement for the MAX603CPA?

A: Yes. The MAX603CPA+ is electrically and mechanically identical to the MAX603CPA. Both devices provide identical voltage regulation, current output, dropout characteristics, and protection features. The 8-DIP through-hole package is the same, enabling direct substitution in existing PCB designs without circuit modifications.

Q: What is the difference between MAX603CPA and MAX603CPA+?

A: The primary differences are product status and compliance certification. The MAX603CPA is obsolete and RoHS non-compliant. The MAX603CPA+ is an active product that meets ROHS3 compliance standards. Electrically and mechanically, both parts are identical.

Q: Why is the MAX603CPA listed as obsolete?

A: The MAX603CPA has been discontinued by the manufacturer. The MAX603CPA+ represents the current active product line for this regulator topology. For ongoing production and new designs, the MAX603CPA+ should be specified.

Q: Are there any package differences between these parts?

A: Both parts use the 8-DIP (0.300", 7.62mm) through-hole package. The MAX603CPA+ is supplied in tube packaging, while the MAX603CPA packaging specification is not detailed. The physical package dimensions and pin configuration are identical.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by matching output configuration (positive), output type (adjustable/fixed), voltage specifications (11.5V input max, 1.25V/5V output min/fixed, 11V output max), dropout voltage (0.55V @ 500mA), output current (500mA), quiescent current (35 µA), control features (enable), protection features (overcurrent, overtemperature, reverse polarity), and operating temperature range (0°C ~ 70°C). The MAX603CPA+ meets all these criteria.

Q: Is RoHS compliance important for my application?

A: RoHS compliance is required for products sold in markets with RoHS regulations, including the European Union and many other regions. If your application or end market requires RoHS compliance, the MAX603CPA+ is the appropriate selection. The MAX603CPA is RoHS non-compliant and may not be acceptable for regulated markets.