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 device delivers a fixed 5V output at 1.5A (switch current) from input voltages ranging from 1.2V to 5.25V, operating at a switching frequency of 170kHz. The part is mounted in an 8-DIP (0.300", 7.62mm) through-hole package and is classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity and procurement planning.

Substiute Parts

MAX751CPA

Analog Devices Inc./Maxim IntegratedIn Stock: 881MAX751CPA Datasheet

Current PartRFQ

MAX751CPA+

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX751CPA is determined by strict equivalence across the following critical parameters:

• Input voltage range: 1.2V to 5.25V
• Fixed output voltage: 5V
• Output current capability: 1.5A (switch)
• Switching frequency: 170kHz
• Topology: Boost (step-up)
• Package: 8-DIP (0.300", 7.62mm) through-hole
• Mounting type: Through-hole
• Operating temperature range: 0°C to 70°C

The MAX751CPA+ qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction between these parts lies in packaging format (tube vs. standard) and compliance certifications, not in functional or electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The MAX751CPA+ serves as the direct electrical equivalent to the MAX751CPA, with identical performance specifications across all functional parameters. The key differentiator is compliance status: the MAX751CPA+ achieves ROHS3 compliance, whereas the original MAX751CPA is RoHS non-compliant. For applications subject to RoHS regulations or environmental compliance requirements, the MAX751CPA+ is the appropriate selection. Both parts share identical electrical characteristics, package dimensions, and thermal operating ranges, ensuring functional interchangeability in circuit designs. Packaging format differs (tube for MAX751CPA+), which may affect procurement and handling procedures but does not impact electrical performance or board-level integration.

Frequently Asked Questions (FAQ)

Q: Are MAX751CPA and MAX751CPA+ electrically identical?

A: Yes. Both parts deliver identical electrical performance: 5V fixed output, 1.5A switch current, 170kHz switching frequency, and 1.2V to 5.25V input range. All functional specifications are equivalent.

Q: What is the primary difference between MAX751CPA and MAX751CPA+?

A: The MAX751CPA+ is ROHS3 compliant, while the MAX751CPA is RoHS non-compliant. Additionally, MAX751CPA+ is supplied in tube packaging. Electrical and thermal specifications remain identical.

Q: Can I use MAX751CPA+ as a direct replacement for MAX751CPA in existing designs?

A: Yes. The MAX751CPA+ is a direct substitute with no circuit modifications required. Pin configuration, package dimensions (8-DIP, 0.300" spacing), and electrical characteristics are identical.

Q: Does the tube packaging of MAX751CPA+ affect circuit performance?

A: No. Packaging format is a procurement and handling consideration only. It does not affect electrical performance, thermal characteristics, or board-level functionality.

Q: Are there any temperature or operating condition differences between these parts?

A: No. Both parts operate across the identical temperature range of 0°C to 70°C (TA) and share all electrical specifications.

Q: Which part should I specify for new designs?

A: For applications requiring RoHS compliance, specify MAX751CPA+. Both parts are obsolete; however, MAX751CPA+ offers superior compliance status for regulated environments.