MAX1626ESA Equivalent & Substitute Parts

Part Overview

The MAX1626ESA is a buck regulator positive output step-down DC-DC controller IC manufactured by Analog Devices Inc./Maxim Integrated in 8-SOIC surface mount packaging. This device functions as a transistor driver for step-down topology applications with a single output phase. The MAX1626ESA is currently classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and component procurement.

Substiute Parts

MAX1626ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 6290MAX1626ESA Datasheet

Current PartRFQ

MAX1626ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2046MAX1626ESA+ Datasheet

DirectRFQ

MAX1627ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1342MAX1627ESA+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX1626ESA are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Topology: Buck (step-down)
• Output Type: Transistor Driver
• Output Configuration: Positive
• Number of Outputs: 1
• Output Phases: 1
• Voltage Supply Range: 3V ~ 16.5V
• Switching Frequency: 300kHz
• Duty Cycle (Max): 100%
• Control Features: Enable
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the original MAX1626ESA, ensuring direct functional equivalence in applications requiring step-down DC-DC controller functionality.

Parameter Comparison

Engineering Selection Recommendations

MAX1626ESA+ (Direct Substitute): This part is the direct equivalent to the MAX1626ESA with identical electrical and mechanical specifications. The MAX1626ESA+ is currently in active production status and is ROHS3 compliant, addressing regulatory requirements that the original obsolete part does not meet. Selection of MAX1626ESA+ is appropriate for new designs and component replacement requiring direct compatibility.

MAX1627ESA+ (Parametric Equivalent): This part maintains all critical electrical parameters and mechanical compatibility with the MAX1626ESA. The MAX1627ESA+ is based on the MAX1627 base product number and is also in active production with ROHS3 compliance. This part provides functional equivalence for applications where the specific base product number variant is not a design constraint.

Both substitute parts are manufactured by the same supplier (Analog Devices Inc./Maxim Integrated), operate within identical voltage supply ranges, switching frequencies, and temperature specifications, and are packaged in the same 8-SOIC form factor. Selection between MAX1626ESA+ and MAX1627ESA+ depends on design documentation requirements and component availability.

Frequently Asked Questions (FAQ)

Q: Can MAX1626ESA+ be used as a direct replacement for MAX1626ESA?

A: Yes. The MAX1626ESA+ maintains identical electrical specifications, output configuration, switching frequency, duty cycle, control features, operating temperature range, and 8-SOIC packaging. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between MAX1626ESA+ and MAX1627ESA+?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The difference lies in the base product number (MAX1626 vs. MAX1627). Both are active, ROHS3 compliant, and packaged in 8-SOIC. Selection depends on design documentation and availability requirements.

Q: Are the substitute parts pin-compatible with the original MAX1626ESA?

A: Yes. All substitute parts use the same 8-SOIC (0.154", 3.90mm Width) package with identical pin configuration, enabling direct board-level replacement without layout modifications.

Q: Does the MAX1626ESA+ support synchronous rectification?

A: No. The MAX1626ESA+ does not include synchronous rectifier functionality, maintaining the same feature set as the original MAX1626ESA.

Q: What is the switching frequency of these buck controller ICs?

A: The switching frequency is fixed at 300kHz for the MAX1626ESA, MAX1626ESA+, and MAX1627ESA+.

Q: Are these parts suitable for applications requiring RoHS compliance?

A: The MAX1626ESA+ and MAX1627ESA+ are ROHS3 compliant. The original MAX1626ESA is RoHS non-compliant. For applications with RoHS requirements, use MAX1626ESA+ or MAX1627ESA+.

Q: What is the maximum duty cycle supported by these controllers?

A: The maximum duty cycle is 100% for all three parts (MAX1626ESA, MAX1626ESA+, and MAX1627ESA+).