MAX797CSE-T Equivalent & Substitute Parts

Part Overview

The MAX797CSE-T is a Buck, Boost, Flyback Regulator controller IC manufactured by Analog Devices Inc./Maxim Integrated, designed for positive output step-up and step-up/step-down DC-DC conversion applications. This device functions as a transistor driver with integrated control features including enable, pulse skipping, and soft start capabilities. The MAX797CSE-T is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and procurement planning.

Substiute Parts

MAX797CSE-T

Analog Devices Inc./Maxim IntegratedIn Stock: 2826MAX797CSE-T Datasheet

Current PartRFQ

MAX797CSE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 15587MAX797CSE+T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX797CSE-T is determined by strict equivalence across the following critical parameters:

• Manufacturer and Base Product Number: Both the main part and substitute must originate from Analog Devices Inc./Maxim Integrated and share the MAX797 base product number to ensure functional and pin-level compatibility.
• Package and Pinout: The 16-SOIC package specification must be identical to maintain mechanical and electrical compatibility with existing PCB layouts.
• Electrical Specifications: Supply voltage range (4.5V ~ 30V), switching frequency options (150kHz, 300kHz), maximum duty cycle (96%), and output configuration (positive, single output, single phase) must remain unchanged.
• Functional Features: Synchronous rectifier capability, clock sync, and control features (enable, pulse skipping, soft start) must be preserved.
• Compliance and Certifications: RoHS3 compliance and MSL rating must be maintained for regulatory and manufacturing process compatibility.

The primary distinction between the main part and its substitute is the packaging format: the MAX797CSE-T uses standard packaging, while the MAX797CSE+T is supplied in Tape & Reel (TR) format. This difference affects procurement and assembly processes but does not alter the electrical or functional characteristics of the component.

Parameter Comparison

Engineering Selection Recommendations

The MAX797CSE+T serves as a direct functional equivalent to the MAX797CSE-T, with identical electrical specifications, pinout, and package dimensions. The primary advantage of the MAX797CSE+T is its active product status with Analog Devices Inc./Maxim Integrated, ensuring continued availability and manufacturing support. Both parts maintain ROHS3 compliance and MSL Level 1 ratings, satisfying regulatory and manufacturing requirements.

For new designs or system refreshes, the MAX797CSE+T is the preferred selection due to its active status and higher inventory availability. For legacy system maintenance where the original MAX797CSE-T is required, the MAX797CSE+T provides electrical and mechanical interchangeability without design modifications.

Frequently Asked Questions (FAQ)

Q: Are MAX797CSE-T and MAX797CSE+T pin-for-pin compatible?

A: Yes. Both parts use the 16-SOIC package with identical pinout and electrical characteristics. They are direct substitutes at the circuit level.

Q: What is the difference between MAX797CSE-T and MAX797CSE+T?

A: The primary difference is packaging format. MAX797CSE-T uses standard packaging, while MAX797CSE+T is supplied in Tape & Reel (TR) format for automated assembly. Electrically and functionally, they are identical.

Q: Can I use MAX797CSE+T in place of MAX797CSE-T on existing PCBs?

A: Yes. The identical 16-SOIC package dimensions and pinout ensure direct PCB compatibility without layout modifications.

Q: Why is MAX797CSE-T listed as obsolete?

A: MAX797CSE-T has been superseded by the MAX797CSE+T, which remains in active production. Analog Devices Inc./Maxim Integrated continues to support the MAX797 product line through the active variant.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts maintain identical ROHS3 compliance, MSL Level 1 rating, REACH status, and ECCN classification.

Q: What supply voltage range do these controllers support?

A: Both the MAX797CSE-T and MAX797CSE+T support a supply voltage range of 4.5V to 30V, enabling operation across a wide range of input power sources.

Q: Can these parts operate at different switching frequencies?

A: Yes. Both controllers support selectable switching frequencies of 150kHz or 300kHz, allowing system designers to optimize efficiency and component sizing for specific applications.