MAX1687ESA+ Equivalent & Substitute Parts

Part Overview

The MAX1687ESA+ is a boost switching regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for step-up voltage conversion applications. This positive adjustable output regulator operates with a fixed switching frequency of 1MHz and delivers up to 730mA output current with integrated synchronous rectification. The device is classified as Active product status and is ROHS3 compliant, making it suitable for modern electronic applications requiring reliable power management in compact form factors.

Alternative components are identified when original stock availability is limited, when design flexibility across compatible topologies is required, or when supply chain optimization is necessary while maintaining identical electrical and mechanical specifications.

Substiute Parts

MAX1687ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 786MAX1687ESA+ Datasheet

Current PartRFQ

MAX1687ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 786MAX1687ESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX1687ESA+ is determined by strict equivalence across the following critical parameters:

• Topology & Function: Boost (step-up) switching regulator configuration
• Output Configuration: Positive adjustable output with single output channel
• Electrical Specifications: Input voltage range 2.7V–6V, output voltage adjustable 1.25V–6V, output current 730mA
• Switching Frequency: Fixed 1MHz operation
• Synchronous Rectification: Integrated synchronous rectifier present
• Package & Pinout: 8-SOIC (0.154", 3.90mm Width) surface mount package
• Temperature Rating: -40°C to 85°C operating range
• Compliance: ROHS3 compliant, MSL 1 rating

Based on the provided input data, the MAX1687ESA+ is listed as its own direct equivalent. No alternative part numbers with differing manufacturer sources or specifications are provided in the substitute list.

Parameter Comparison

Engineering Selection Recommendations

The MAX1687ESA+ maintains Active product status with full ROHS3 compliance and MSL 1 moisture sensitivity rating, indicating unrestricted shelf life and suitability for standard manufacturing environments. The device is manufactured by Analog Devices Inc./Maxim Integrated, a primary source supplier with established quality and reliability standards.

Selection of this component is appropriate for applications requiring boost regulation within the specified input and output voltage ranges, with output current demands up to 730mA. The integrated synchronous rectifier provides efficiency optimization for battery-powered and low-voltage input applications. The 8-SOIC package accommodates space-constrained PCB layouts while maintaining thermal performance suitable for the -40°C to 85°C operating range.

Frequently Asked Questions (FAQ)

Q: What defines a valid substitute for the MAX1687ESA+?

A: A valid substitute must match all critical electrical parameters: boost topology, 2.7V–6V input range, 1.25V–6V adjustable output, 730mA output current, 1MHz switching frequency, integrated synchronous rectification, and 8-SOIC package configuration. Compliance certifications (ROHS3, MSL 1) and operating temperature range (-40°C to 85°C) must also be identical.

Q: Is the MAX1687ESA+ available from multiple manufacturers?

A: The MAX1687ESA+ is manufactured by Analog Devices Inc./Maxim Integrated. This is the primary source part number. No alternative manufacturer variants are listed in the provided substitute data.

Q: Can the MAX1687ESA+ be used in applications requiring different output voltage ranges?

A: The MAX1687ESA+ supports adjustable output voltage from 1.25V to 6V through external resistor divider configuration. Applications requiring fixed output voltages within this range can be accommodated through appropriate feedback network design.

Q: What is the significance of the 8-SOIC package specification?

A: The 8-SOIC (0.154", 3.90mm Width) package is a surface mount configuration with 0.154-inch body width and 3.90mm overall width. This package type is standard for small-signal integrated circuits and requires compatible PCB footprints and reflow soldering processes. Substitutes must use identical package geometry to ensure mechanical and electrical compatibility.

Q: Does the MAX1687ESA+ require external components for operation?

A: The MAX1687ESA+ requires external passive components for proper operation, including input/output filtering capacitors, feedback resistors for output voltage adjustment, and an inductor for the boost converter topology. Specific component values depend on application requirements and are determined during circuit design.

Q: What does MSL 1 (Unlimited) moisture sensitivity rating indicate?

A: MSL 1 rating indicates the component has unlimited shelf life and does not require moisture-controlled storage or baking procedures prior to assembly. This simplifies inventory management and reduces manufacturing process constraints.