MAX797ESE Equivalent & Substitute Parts

Part Overview

The MAX797ESE 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 MAX797ESE is classified as obsolete, which necessitates identification of functionally equivalent substitute components for new designs and ongoing production support.

Substiute Parts

MAX797ESE

Analog Devices Inc./Maxim IntegratedIn Stock: 2583MAX797ESE Datasheet

Current PartRFQ

MAX797ESE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2159MAX797ESE+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX797ESE is determined by strict equivalence across the following critical parameters:

• Package Compatibility: 16-SOIC (0.154", 3.90mm Width) form factor
• Functional Topology: Buck, Boost, Flyback regulator controller capability
• Output Characteristics: Positive output, single output, single phase configuration
• Electrical Performance: 5V ~ 30V supply voltage range, 150kHz and 300kHz switching frequency support, 96% maximum duty cycle
• Control Architecture: Transistor driver output type with enable, pulse skipping, and soft start features
• Synchronization Capability: Clock sync and synchronous rectifier support
• Operating Range: -40°C ~ 85°C temperature specification

The substitute part MAX797ESE+ maintains identical electrical and mechanical specifications while offering improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The MAX797ESE+ serves as the direct substitute for the MAX797ESE based on the following criteria:

Product Status: The MAX797ESE is classified as obsolete, while the MAX797ESE+ maintains active product status. For new designs and ongoing production, the MAX797ESE+ is the appropriate selection to ensure long-term component availability and manufacturer support.

Regulatory Compliance: The MAX797ESE+ is ROHS3 compliant, whereas the original MAX797ESE is RoHS non-compliant. This distinction is significant for applications subject to RoHS directives and environmental regulations. Both parts maintain REACH Unaffected status.

Electrical and Mechanical Equivalence: The MAX797ESE+ provides complete functional equivalence across all electrical parameters, control features, and mechanical specifications. Pin-for-pin compatibility and identical package geometry ensure direct substitution without circuit redesign.

Inventory and Supply Chain: The MAX797ESE+ is available in tube packaging with active inventory status, providing superior supply chain reliability compared to the obsolete MAX797ESE.

Frequently Asked Questions (FAQ)

Q: Can MAX797ESE+ be used as a direct replacement for MAX797ESE in existing designs?

A: Yes. The MAX797ESE+ is electrically and mechanically identical to the MAX797ESE. Both devices share the same 16-SOIC package, identical pin configuration, and equivalent electrical specifications across all parameters including supply voltage range, switching frequency, duty cycle, and control features. No circuit modifications are required.

Q: What is the primary difference between MAX797ESE and MAX797ESE+?

A: The primary differences are product status and regulatory compliance. The MAX797ESE is obsolete and RoHS non-compliant, while the MAX797ESE+ is an active product that meets ROHS3 compliance requirements. Electrically and functionally, both parts are equivalent.

Q: Are there any package or pinout differences between these parts?

A: No. Both the MAX797ESE and MAX797ESE+ use the 16-SOIC (0.154", 3.90mm Width) package with identical pinout and mechanical specifications. The only packaging difference is that MAX797ESE+ is supplied in tube format.

Q: Which part should be selected for new production designs?

A: The MAX797ESE+ should be selected for all new designs. As an active product with ROHS3 compliance and established supply chain availability, it provides superior long-term support and regulatory alignment compared to the obsolete MAX797ESE.

Q: Are the control features identical between both parts?

A: Yes. Both the MAX797ESE and MAX797ESE+ provide identical control features including enable, pulse skipping, and soft start functionality. Synchronous rectifier and clock sync capabilities are present in both devices.

Q: What is the operating temperature range for both parts?

A: Both the MAX797ESE and MAX797ESE+ operate across the identical temperature range of -40°C to 85°C (TA).