MAX5035CUPA+ Equivalent & Substitute Parts

Part Overview

The MAX5035CUPA+ is a buck switching regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for step-down voltage conversion with a fixed 12V output at 1A output current. This device operates across a wide input voltage range of 7.5V to 76V and is packaged in an 8-DIP (0.300", 7.62mm) through-hole configuration. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations where 12V fixed output regulation is required.

Substiute Parts

MAX5035CUPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 21919MAX5035CUPA+ Datasheet

Current PartRFQ

MAX17502HAUD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1737MAX17502HAUD+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX5035CUPA+ is determined by the following critical parameters:

• Output voltage regulation capability (fixed 12V or adjustable to 12V equivalent)
• Output current rating (minimum 1A)
• Input voltage compatibility (minimum 7.5V, maximum 76V tolerance)
• Topology (buck switching regulator)
• Regulatory compliance (ROHS3, REACH Unaffected)

The MAX17502HAUD+ qualifies as a manufacturer-recommended substitute based on its buck topology, 1A output current capability, and input voltage range that encompasses the MAX5035CUPA+ operating window. While the MAX17502HAUD+ features adjustable output voltage (0.9V to 57.9V) rather than fixed 12V output, it can be configured to deliver 12V through external resistor networks, providing functional equivalence for the primary application requirement.

Parameter Comparison

Engineering Selection Recommendations

The MAX17502HAUD+ is the manufacturer-recommended substitute for the obsolete MAX5035CUPA+. Both devices maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory continuity. The MAX17502HAUD+ is currently in active production status, providing long-term availability and supply chain stability compared to the obsolete MAX5035CUPA+.

Key considerations for selection include package transition from through-hole 8-DIP to surface-mount 14-TSSOP, which requires PCB layout redesign. The MAX17502HAUD+ offers extended operating temperature range (-40°C to 125°C junction temperature versus 0°C to 85°C ambient), higher switching frequency (300kHz versus 125kHz), and integrated synchronous rectification for improved efficiency. The adjustable output voltage architecture of the MAX17502HAUD+ requires external resistor configuration to establish 12V output, whereas the MAX5035CUPA+ provides fixed 12V output without external adjustment components.

Frequently Asked Questions (FAQ)

Q: Can the MAX17502HAUD+ directly replace the MAX5035CUPA+ without circuit modifications?

A: No. The MAX17502HAUD+ requires external resistor divider network configuration to set output voltage to 12V, whereas the MAX5035CUPA+ provides fixed 12V output. Additionally, the package transition from 8-DIP through-hole to 14-TSSOP surface-mount requires PCB redesign.

Q: What is the input voltage compatibility between these devices?

A: The MAX5035CUPA+ operates from 7.5V to 76V input. The MAX17502HAUD+ operates from 4.5V to 60V input. The MAX17502HAUD+ covers the lower input voltage range but has a reduced maximum input voltage specification of 60V compared to 76V.

Q: Are both devices RoHS compliant?

A: Yes. Both the MAX5035CUPA+ and MAX17502HAUD+ are ROHS3 compliant and REACH Unaffected, meeting current regulatory requirements.

Q: What are the package differences?

A: The MAX5035CUPA+ uses 8-DIP (0.300", 7.62mm) through-hole packaging for breadboard and traditional PCB assembly. The MAX17502HAUD+ uses 14-TSSOP (0.173", 4.40mm Width) surface-mount packaging with exposed pad, requiring SMT assembly equipment and techniques.

Q: How do the switching frequencies compare?

A: The MAX5035CUPA+ operates at 125kHz switching frequency. The MAX17502HAUD+ operates at 300kHz, resulting in smaller external component requirements and potentially improved transient response in the substitute design.

Q: What is the product status difference?

A: The MAX5035CUPA+ is obsolete with no further production. The MAX17502HAUD+ is active in production, ensuring availability for new designs and ongoing support.