MAX1626ESA-T Buck Regulator Controller Equivalent & Substitute Parts

Part Overview

The MAX1626ESA-T is a buck regulator positive output step-down DC-DC controller IC manufactured by Analog Devices Inc./Maxim Integrated in an 8-SOIC package. This component functions as a transistor driver for step-down voltage conversion applications with a single output phase and 100% maximum duty cycle capability. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement capability.

Substiute Parts

MAX1626ESA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 3692MAX1626ESA-T Datasheet

Current PartRFQ

MAX1626ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 10389MAX1626ESA+T Datasheet

Parametric EquivalentRFQ

MAX1627ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3479MAX1627ESA+T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX1626ESA-T are qualified based on strict equivalence across all electrical and mechanical parameters. The substitution criteria are:

• Identical function as step-down buck regulator controller with transistor driver output
• Matching positive output configuration with single output phase
• Identical supply voltage range of 3V ~ 16.5V
• Identical switching frequency of 300kHz
• Identical maximum duty cycle of 100%
• Identical control features (Enable function)
• Identical operating temperature range of -40°C ~ 85°C
• Identical 8-SOIC package with 0.154" (3.90mm) width
• Surface mount mounting type

The identified substitutes maintain full parametric equivalence across all specified electrical and mechanical characteristics, enabling direct replacement in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both MAX1626ESA+T and MAX1627ESA+T qualify as direct parametric equivalents to the obsolete MAX1626ESA-T based on identical electrical and mechanical specifications. Selection between these alternatives should be based on the following factors:

MAX1626ESA+T is recommended for applications requiring RoHS3 compliance with active product status and higher current inventory availability (10,300 pcs). This part maintains the MAX1626 base product number designation.

MAX1627ESA+T is recommended as an alternative active substitute with RoHS3 compliance and adequate inventory (3,392 pcs). This part carries the MAX1627 base product number designation while maintaining full parametric equivalence.

Both substitutes are available in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both prototype and production volume requirements. The selection between MAX1626ESA+T and MAX1627ESA+T should be based on design validation history, supply chain preferences, and inventory availability for the specific application.

Frequently Asked Questions (FAQ)

Q: Can MAX1626ESA+T and MAX1627ESA+T be used interchangeably with MAX1626ESA-T?

A: Yes. Both parts maintain identical electrical specifications including supply voltage range (3V ~ 16.5V), switching frequency (300kHz), duty cycle (100%), and operating temperature range (-40°C ~ 85°C). Both are packaged in 8-SOIC with identical pin configurations and mechanical dimensions, enabling direct circuit board replacement.

Q: What is the primary difference between the substitute parts?

A: The MAX1626ESA+T and MAX1627ESA+T differ in base product number designation (MAX1626 versus MAX1627) and current inventory levels. Both are active products with RoHS3 compliance. Electrical and mechanical parameters are identical.

Q: Why is the original MAX1626ESA-T classified as obsolete?

A: The MAX1626ESA-T is listed as obsolete by the manufacturer. The active equivalents MAX1626ESA+T and MAX1627ESA+T are recommended for new designs and ongoing production to ensure long-term supply availability and compliance with current regulatory standards including RoHS3.

Q: Are there packaging differences between the main part and substitutes?

A: The main part MAX1626ESA-T does not specify packaging format. Both substitutes are available in Cut Tape (CT) and Digi-Reel® packaging, which are standard formats for surface mount components in 8-SOIC packages.

Q: Do the substitute parts meet current regulatory compliance requirements?

A: Yes. Both MAX1626ESA+T and MAX1627ESA+T are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components in most markets.

Q: What inventory levels are available for these substitute parts?

A: MAX1626ESA+T has 10,300 pcs in stock. MAX1627ESA+T has 3,392 pcs in stock. Both represent adequate inventory for production requirements.