MAX751CPA+ Equivalent & Substitute Parts

Part Overview

The MAX751CPA+ is a boost switching regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for step-up voltage conversion applications. This component delivers a fixed 5V output at 1.5A (switch) from input voltages ranging from 1.2V to 5.25V, operating at a switching frequency of 170kHz. The device is packaged in an 8-DIP (0.300", 7.62mm) through-hole configuration. As an obsolete product status component, identifying equivalent alternatives is necessary for ongoing system support, design updates, and long-term supply chain management.

Substiute Parts

MAX751CPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 925MAX751CPA+ Datasheet

Current PartRFQ

MAX751CPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 925MAX751CPA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX751CPA+ is determined by strict alignment with the following critical parameters:

• Output Voltage Configuration: Fixed 5V output
• Output Current Capability: Minimum 1.5A switch current
• Input Voltage Range: Support for 1.2V to 5.25V input
• Topology: Boost (step-up) switching regulator
• Package: 8-DIP through-hole form factor
• Switching Frequency: 170kHz operation
• Compliance: ROHS3 compliant, MSL Level 1

The MAX751CPA+ serves as both the primary reference and direct equivalent. Substitute parts must maintain identical electrical specifications across all parameters listed above to ensure functional and mechanical compatibility in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The MAX751CPA+ is classified as obsolete. For applications currently utilizing this component, direct replacement with the MAX751CPA+ remains the only equivalent option when available from authorized distributors. The part maintains ROHS3 compliance and MSL Level 1 rating, supporting deployment in standard manufacturing environments without moisture sensitivity constraints.

When the MAX751CPA+ is unavailable, alternative boost regulator solutions must be evaluated against the complete parameter set: fixed 5V output, 1.5A minimum switch current, 1.2V to 5.25V input range, 8-DIP through-hole package, and 170kHz switching frequency. Any deviation from these specifications constitutes a design change requiring full electrical and thermal validation.

Frequently Asked Questions (FAQ)

Q: Can the MAX751CPA+ be replaced with a different boost regulator IC?

A: Direct substitution requires an alternative component with identical output voltage (5V fixed), output current (1.5A switch minimum), input voltage range (1.2V to 5.25V), switching frequency (170kHz), and 8-DIP through-hole package. Components with different specifications represent design changes, not substitutions.

Q: What does the obsolete product status mean for the MAX751CPA+?

A: Obsolete status indicates the manufacturer has discontinued production. Existing inventory may be available through authorized distributors. For new designs or long-term production, alternative components meeting the specified parameters should be evaluated.

Q: Is the 8-DIP package critical for substitution?

A: Yes. The 8-DIP (0.300", 7.62mm) through-hole package is a mechanical requirement for PCB compatibility. Surface-mount alternatives or different DIP pin counts are not direct substitutes without PCB redesign.

Q: Does RoHS3 compliance affect substitution eligibility?

A: Yes. Substitute parts must maintain ROHS3 compliance to meet regulatory and supply chain requirements. Non-compliant alternatives are not acceptable substitutes.

Q: What is the significance of the 170kHz switching frequency?

A: The switching frequency determines EMI characteristics, component selection for external inductors and capacitors, and overall circuit performance. Substitutes must operate at 170kHz to maintain design integrity.