MAX771C/D Equivalent & Substitute Parts

Part Overview

The MAX771C/D is a Boost Regulator Positive Output Step-Up DC-DC Controller IC in dice packaging, manufactured by Analog Devices Inc./Maxim Integrated. This component functions as a transistor driver for step-up topology applications with a single positive output phase. The product is currently obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

MAX771C/D

Analog Devices Inc./Maxim IntegratedIn Stock: 817MAX771C/D Datasheet

Current PartRFQ

MAX608ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1918MAX608ESA+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The MAX608ESA+ serves as the manufacturer-recommended substitute for the MAX771C/D. Substitution is based on the following critical parameters that remain consistent between the two components:

• Boost regulator topology with positive output configuration
• Transistor driver output type for step-up DC-DC control
• Single output phase architecture
• Switching frequency up to 300kHz
• Enable control feature
• ROHS3 compliance and MSL 1 rating
• Same manufacturer (Analog Devices Inc./Maxim Integrated)

The MAX608ESA+ extends the supply voltage range to 1.8V minimum and expands the operating temperature range to -40°C ~ 85°C, providing broader application flexibility while maintaining functional equivalence in boost regulator control.

Parameter Comparison

Engineering Selection Recommendations

The MAX608ESA+ is the active, manufacturer-recommended substitute for the obsolete MAX771C/D. Both components maintain ROHS3 compliance and MSL 1 ratings, ensuring regulatory and environmental compatibility. The MAX608ESA+ is available in 8-SOIC surface mount packaging with 1900 units in current inventory, compared to the MAX771C/D dice form factor with 781 units remaining in stock.

Selection of the MAX608ESA+ is appropriate for applications requiring boost regulator control with positive output configuration. The extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) and lower minimum supply voltage (1.8V versus 3V) provide enhanced operational flexibility for diverse thermal and power supply environments.

Frequently Asked Questions (FAQ)

Q: Can the MAX608ESA+ directly replace the MAX771C/D in existing designs?

A: Functional substitution is valid based on matching boost regulator topology, transistor driver output type, and control features. However, packaging differs significantly: MAX771C/D is supplied as dice, while MAX608ESA+ is 8-SOIC surface mount. Circuit board redesign is required for physical integration.

Q: What are the key differences between these components?

A: The MAX608ESA+ extends the supply voltage range to 1.8V minimum (versus 3V) and operating temperature to -40°C ~ 85°C (versus 0°C ~ 70°C). Both maintain identical switching frequency capability (300kHz) and boost topology function.

Q: Are there any compliance or certification differences?

A: Both components are ROHS3 compliant with MSL 1 rating. The MAX608ESA+ carries EAR99 ECCN classification, while the MAX771C/D is marked obsolete. No regulatory barriers exist for substitution.

Q: What packaging considerations apply to this substitution?

A: The MAX771C/D dice package requires specialized handling and assembly processes. The MAX608ESA+ 8-SOIC package is standard surface mount, compatible with conventional PCB assembly equipment and processes.