MAX640ESA Equivalent & Substitute Parts

Part Overview

The MAX640ESA is a buck switching regulator IC from Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) component. It functions as a step-down converter delivering positive adjustable/fixed output voltage at 225mA maximum output current in an 8-SOIC surface mount package. The device operates across an input voltage range of 4V to 11.5V and supports output configurations from 1.3V to 11.5V.

The MAX640ESA is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

MAX640ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 3582MAX640ESA Datasheet

Current PartRFQ

MAX640ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 3304MAX640ESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX640ESA is determined by strict equivalence across the following critical parameters:

• Topology: Buck (step-down) switching regulator
• Output Configuration: Positive single output
• Output Type: Adjustable (Fixed) voltage capability
• Input Voltage Range: 4V to 11.5V minimum and maximum
• Output Voltage Range: 1.3V to 11.5V minimum and maximum
• Output Current: 225mA
• Package Type: 8-SOIC (0.154", 3.90mm Width)
• Mounting: Surface Mount
• Operating Temperature Range: -40°C to 85°C
• Synchronous Rectifier: No

The MAX640ESA+ qualifies as a direct substitute based on identical electrical specifications, package configuration, and functional characteristics. The primary distinction between these parts relates to product status and compliance certifications rather than electrical or mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The MAX640ESA+ is the direct equivalent substitute for the MAX640ESA. Both parts share identical electrical and mechanical specifications, ensuring functional interchangeability in circuit applications.

The MAX640ESA+ is recommended for new designs and ongoing production due to its active product status. The MAX640ESA, classified as obsolete, presents supply chain risk and should be replaced in active programs.

The MAX640ESA+ provides improved compliance posture, meeting ROHS3 requirements compared to the non-compliant status of the MAX640ESA. Both parts maintain REACH Unaffected classification and identical Moisture Sensitivity Level (MSL) ratings.

Frequently Asked Questions (FAQ)

Q: Can MAX640ESA+ be used as a direct replacement for MAX640ESA in existing designs?

A: Yes. The MAX640ESA+ is electrically and mechanically identical to the MAX640ESA. All electrical parameters, output specifications, input voltage ranges, current ratings, operating temperature range, and package configuration are equivalent. No circuit modifications are required.

Q: What is the primary difference between MAX640ESA and MAX640ESA+?

A: The primary differences are product status and regulatory compliance. The MAX640ESA is obsolete, while the MAX640ESA+ is active. The MAX640ESA+ meets ROHS3 compliance requirements, whereas the MAX640ESA is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout and mechanical dimensions. PCB layout and component placement require no modification.

Q: What is the inventory status for these parts?

A: The MAX640ESA has 3478 pieces in stock (new original). The MAX640ESA+ has 3200 pieces in stock (new original). Availability should be confirmed with the supplier for current procurement requirements.

Q: Are there compliance or certification considerations for part selection?

A: The MAX640ESA+ is ROHS3 compliant, making it suitable for applications subject to RoHS regulations. The MAX640ESA is RoHS non-compliant. Both parts are REACH Unaffected. For new designs or programs with regulatory requirements, the MAX640ESA+ is the appropriate selection.