MAX603ESA Linear Voltage Regulator IC

Part Overview

The MAX603ESA 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 capable of delivering 500mA output current in an 8-SOIC surface mount package. The MAX603ESA is currently listed as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity.

Substiute Parts

MAX603ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 2878MAX603ESA Datasheet

Current PartRFQ

MAX603ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 5987MAX603ESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX603ESA is determined by strict equivalence across the following critical parameters:

• Output configuration (Positive)
• Output type (Adjustable/Fixed)
• Number of regulators (1)
• Maximum input voltage (11.5V)
• Output voltage range (1.25V to 11V)
• Output current capability (500mA)
• Voltage dropout specification (0.55V @ 500mA)
• Quiescent current (35 µA)
• Control features (Enable function)
• Protection features (Over Current, Over Temperature, Reverse Polarity)
• Operating temperature range (-40°C ~ 85°C)
• Package type (8-SOIC)

The MAX603ESA+ is identified as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MAX603ESA+ serves as the direct substitute for the obsolete MAX603ESA. Both parts maintain identical electrical and mechanical specifications, ensuring functional equivalence in circuit applications. The MAX603ESA+ is currently in active production status, providing supply chain continuity for designs requiring this regulator topology.

The MAX603ESA+ achieves ROHS3 compliance, whereas the original MAX603ESA is RoHS non-compliant. This distinction is significant for applications subject to regulatory requirements mandating RoHS compliance. Both parts maintain REACH Unaffected status and identical Moisture Sensitivity Level (MSL) classification of 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Selection between these parts should be based on product availability, supply chain requirements, and regulatory compliance mandates applicable to the end application. The electrical performance and mechanical compatibility are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the MAX603ESA+ be used as a direct replacement for the MAX603ESA in existing designs?

A: Yes. The MAX603ESA+ is electrically and mechanically equivalent to the MAX603ESA. Both devices feature identical output configurations, voltage specifications, current ratings, dropout voltage, quiescent current, control features, protection mechanisms, operating temperature range, and 8-SOIC package dimensions. PCB layout and circuit design require no modification.

Q: What is the primary difference between the MAX603ESA and MAX603ESA+?

A: The MAX603ESA is obsolete, while the MAX603ESA+ is in active production. Additionally, the MAX603ESA+ achieves ROHS3 compliance, whereas the MAX603ESA is RoHS non-compliant. All electrical and mechanical parameters remain identical.

Q: Are there any packaging differences between these parts?

A: Both parts use the 8-SOIC (0.154", 3.90mm Width) package. The MAX603ESA+ is supplied in Tube packaging, while the original MAX603ESA packaging specification is not detailed. The physical component dimensions and pin configuration are identical.

Q: Does the MAX603ESA+ require different PCB layout considerations?

A: No. The MAX603ESA+ maintains the same 8-SOIC package footprint and pin assignment as the MAX603ESA. Existing PCB designs require no modification for component substitution.

Q: What regulatory compliance should be considered when selecting between these parts?

A: The MAX603ESA+ is ROHS3 compliant, making it suitable for applications subject to RoHS directives. The MAX603ESA is RoHS non-compliant. Both parts are REACH Unaffected. Regulatory requirements of the target market and end application should determine part selection.

Q: Are the thermal and reliability characteristics identical?

A: Yes. Both parts operate across the identical temperature range (-40°C ~ 85°C), maintain the same quiescent current (35 µA), and feature identical protection mechanisms (Over Current, Over Temperature, Reverse Polarity). Moisture Sensitivity Level (MSL) classification is identical at Level 1 (Unlimited).