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 capacity. 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.

Substiute Parts

MAX5035CUPA

Analog Devices Inc./Maxim IntegratedIn Stock: 2347MAX5035CUPA 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 Configuration: The MAX5035CUPA provides a fixed 12V output. Substitute parts must deliver equivalent voltage output or provide adjustable output capability that includes the 12V operating point.
• Output Current Rating: Minimum 1A output current capacity is required to maintain functional equivalence.
• Input Voltage Range: The substitute must accept the operating input voltage range of 7.5V to 76V, or a subset thereof that covers the intended application.
• Topology: Buck (step-down) switching regulator topology is mandatory.
• Manufacturer Continuity: Parts from Analog Devices Inc./Maxim Integrated ensure design continuity, documentation compatibility, and supply chain reliability.
• Compliance Standards: RoHS3 compliance is required for regulatory alignment with the original component.

The MAX17502HAUD+ qualifies as a substitute based on these criteria: it maintains buck topology, delivers 1A output current, accepts input voltages within the required range (4.5V to 60V), and provides adjustable output voltage capability that encompasses the 12V fixed output of the original part.

Parameter Comparison

Engineering Selection Recommendations

The MAX17502HAUD+ is the manufacturer-recommended substitute for the obsolete MAX5035CUPA. Selection of this substitute is supported by the following factors:

• Product Status: The MAX17502HAUD+ maintains active product status with ongoing manufacturer support, documentation, and supply availability, addressing the obsolescence of the original component.
• Regulatory Compliance: Both components maintain ROHS3 compliance, ensuring continued adherence to environmental and regulatory requirements.
• Functional Equivalence: The MAX17502HAUD+ delivers the required 1A output current and accepts input voltages within the operational range of the original design. The adjustable output voltage capability of the substitute accommodates the fixed 12V output requirement through appropriate external resistor configuration.
• Manufacturer Continuity: Both components are manufactured by Analog Devices Inc./Maxim Integrated, ensuring design documentation compatibility and technical support consistency.

Implementation of the MAX17502HAUD+ requires circuit board redesign due to package type change from through-hole to surface mount and pin configuration differences. External resistor networks for output voltage adjustment must be incorporated into the design.

Frequently Asked Questions (FAQ)

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

A: No. The MAX17502HAUD+ requires circuit board redesign. The package changes from 8-DIP through-hole to 14-TSSOP surface mount, and the pin configuration differs. Additionally, the adjustable output voltage design requires external resistor networks to set the 12V output level.

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

A: The MAX5035CUPA accepts 7.5V to 76V input. The MAX17502HAUD+ accepts 4.5V to 60V input. The substitute covers the lower portion of the original range (7.5V to 60V) but does not support inputs above 60V. Verify that your application operates within the 7.5V to 60V window before substitution.

Q: Does the MAX17502HAUD+ provide the same fixed 12V output as the original part?

A: The MAX17502HAUD+ provides adjustable output voltage from 0.9V to 57.9V. To achieve 12V output, external resistors must be configured according to the device datasheet feedback network specifications. This is not a fixed output like the original component.

Q: What are the package and mounting differences?

A: The MAX5035CUPA uses 8-DIP (0.300", 7.62mm) through-hole packaging for breadboard or through-hole PCB mounting. The MAX17502HAUD+ uses 14-TSSOP (0.173", 4.40mm Width) with exposed pad for surface mount PCB assembly. This requires complete circuit board redesign and different assembly processes.

Q: Are there temperature range differences between these components?

A: Yes. The MAX5035CUPA operates from 0°C to 85°C (TA). The MAX17502HAUD+ operates from -40°C to 125°C (TJ), providing extended temperature capability. If your application requires operation below 0°C or above 85°C, the substitute offers improved performance margin.

Q: What is the switching frequency difference and does it matter?

A: The MAX5035CUPA switches at 125kHz, while the MAX17502HAUD+ switches at 300kHz. Higher switching frequency reduces output filter component size but may increase EMI considerations. Circuit design must account for this frequency change in filter and layout design.

Q: Does the MAX17502HAUD+ include synchronous rectification?

A: Yes. The MAX17502HAUD+ includes an integrated synchronous rectifier, while the MAX5035CUPA does not. This improves efficiency at the cost of increased circuit complexity and requires different external component selection.