MAX759CWE+ Equivalent & Substitute Parts

Part Overview

The MAX759CWE+ is a buck-boost switching regulator IC manufactured by Analog Devices Inc./Maxim Integrated. This device functions as a step-up/step-down converter with negative adjustable output, delivering 300mA output current across an input voltage range of 4V to 11V. The part is actively produced and widely stocked, with 3575 units available in new original condition. The MAX759CWE+ operates at a switching frequency of 185kHz and is housed in a 16-SOIC surface mount package. Identification of equivalent and substitute parts is necessary for supply chain continuity, design flexibility, and procurement optimization when the primary part number becomes unavailable or when alternative sourcing is required.

Substiute Parts

MAX759CWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 3657MAX759CWE+ Datasheet

Current PartRFQ

MAX759CWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 3657MAX759CWE+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX759CWE+ is determined by strict alignment with the following critical parameters:

• Topology & Function: Buck-boost switching regulator with step-up/step-down capability
• Output Configuration: Negative adjustable output
• Electrical Specifications: Input voltage range 4V to 11V; output voltage range 0V to -15V; 300mA output current
• Switching Frequency: 185kHz operation
• Package Format: 16-SOIC surface mount package with 0.295" (7.50mm) width
• Compliance & Status: Active product status; ROHS3 compliant; REACH unaffected; MSL Level 1

Only parts meeting all of these parameters qualify as direct substitutes. Deviations in any electrical specification, package type, or compliance certification disqualify a part from substitution consideration.

Parameter Comparison

Engineering Selection Recommendations

The MAX759CWE+ is an active product with full ROHS3 compliance and REACH unaffected status, making it suitable for current production designs and long-term supply chain planning. The part carries MSL Level 1 moisture sensitivity rating, indicating unlimited shelf life under standard storage conditions. Selection of equivalent parts must maintain identical compliance certifications and active product status to ensure regulatory adherence and manufacturing continuity. The 16-SOIC package format and surface mount technology are standard for this device class and should be preserved in any substitution decision.

Frequently Asked Questions (FAQ)

Q: What defines a direct substitute for the MAX759CWE+?

A: A direct substitute must match all electrical specifications (input voltage 4V–11V, output voltage 0V to -15V, 300mA current), maintain the same buck-boost topology with negative adjustable output, operate at 185kHz switching frequency, use the 16-SOIC package format, and maintain identical compliance certifications (ROHS3, REACH unaffected).

Q: Can parts with different output current ratings substitute for the MAX759CWE+?

A: No. The 300mA output current specification is a critical parameter. Parts with different current ratings do not qualify as direct substitutes.

Q: Are package variants acceptable substitutes?

A: No. The 16-SOIC (0.295", 7.50mm Width) package is a mandatory specification. Alternative package formats, including different SOIC widths or other package types, are not acceptable substitutes.

Q: What is the significance of the ROHS3 and REACH compliance status?

A: ROHS3 compliance and REACH unaffected status are regulatory requirements for many markets and applications. Substitute parts must maintain these certifications to ensure legal and contractual compliance in production designs.

Q: Does the MSL Level 1 rating affect substitution?

A: MSL Level 1 indicates unlimited shelf life under standard storage conditions. Substitute parts should maintain this or better MSL rating to ensure consistent handling and storage requirements.

Q: Can the MAX759CWE+ be substituted with a positive output buck-boost regulator?

A: No. The negative output configuration is a fundamental functional requirement. Positive output regulators are not compatible with designs requiring negative voltage rails.