MAX759CWE Equivalent & Substitute Parts

Part Overview

The MAX759CWE is a Buck-Boost Switching Regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for negative adjustable output applications. This component operates as a step-up/step-down converter with a single negative output, delivering 300mA at switching frequencies of 185kHz. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

MAX759CWE

Analog Devices Inc./Maxim IntegratedIn Stock: 3975MAX759CWE Datasheet

Current PartRFQ

MAX759CWE+

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX759CWE is determined by strict equivalence across 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–11V), output voltage range (0V to –15V), output current (300mA), and switching frequency (185kHz)
• Package Compatibility: 16-SOIC surface mount package with identical physical dimensions
• Operating Temperature Range: 0°C to 70°C

The MAX759CWE+ qualifies as a direct substitute based on identical electrical performance, package form factor, and functional topology. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MAX759CWE+ is the direct functional equivalent of the MAX759CWE. Selection between these parts is determined by regulatory and procurement requirements:

MAX759CWE: Suitable for legacy systems, maintenance applications, or designs where RoHS compliance is not mandated. Product status is obsolete; availability is limited to existing inventory.

MAX759CWE+: Recommended for new designs and applications requiring RoHS3 compliance. Active product status ensures ongoing availability and manufacturing support. Identical electrical and mechanical specifications enable direct substitution without circuit redesign.

Both parts share identical electrical performance, package form factor, and thermal operating range. The choice between them depends on compliance requirements and procurement timeline.

Frequently Asked Questions (FAQ)

Q: Can MAX759CWE+ replace MAX759CWE in existing designs? A: Yes. The MAX759CWE+ is electrically and mechanically identical to the MAX759CWE. No circuit modifications are required for substitution.

Q: What is the primary difference between MAX759CWE and MAX759CWE+? A: The MAX759CWE+ is ROHS3 compliant and carries active product status, while the MAX759CWE is obsolete and RoHS non-compliant. Electrical specifications and package form factor are identical.

Q: Are the packages physically interchangeable? A: Yes. Both parts use the 16-SOIC (0.295", 7.50mm Width) surface mount package with identical pin configuration and physical dimensions.

Q: What is the switching frequency of these regulators? A: Both the MAX759CWE and MAX759CWE+ operate at a fixed switching frequency of 185kHz.

Q: What output voltage range is supported? A: Both parts support adjustable negative output voltage from 0V to -15V, with a maximum output current of 300mA.

Q: Are there any thermal or operating condition differences? A: No. Both parts operate across the same temperature range of 0°C to 70°C and share identical thermal characteristics.

Q: Which part should be selected for new designs? A: The MAX759CWE+ is recommended for new designs due to active product status, ROHS3 compliance, and assured long-term availability.