MAX765ESA Buck-Boost Switching Regulator IC

Part Overview

The MAX765ESA is a buck-boost switching regulator IC designed for negative output voltage applications. This device generates a fixed -1V output (with -12V capability) from input supplies ranging from 3V to 16V, delivering up to 120mA of output current. The MAX765ESA is classified as obsolete, which necessitates identification of active alternative components for new designs and ongoing production requirements.

Substiute Parts

MAX765ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 8253MAX765ESA Datasheet

Current PartRFQ

MAX765ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1612MAX765ESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX765ESA is determined by strict equivalence across the following electrical and mechanical parameters:

• Output Configuration: Negative voltage output
• Topology: Buck-Boost switching regulator
• Output Voltage: -1V fixed output (-12V range capability)
• Output Current: 120mA minimum
• Input Voltage Range: 3V to 16V
• Switching Frequency: 300kHz
• Package Type: 8-SOIC form factor
• Operating Temperature Range: -40°C to 85°C
• Mounting: Surface Mount

The MAX765ESA+ meets all these criteria and serves as a direct functional equivalent with improved compliance status.

Parameter Comparison

Engineering Selection Recommendations

The MAX765ESA+ is the appropriate substitute for the obsolete MAX765ESA. Both components are electrically and mechanically identical across all functional parameters. The MAX765ESA+ offers the additional advantage of active product status and ROHS3 compliance, making it suitable for new designs and production environments with regulatory requirements. The identical 8-SOIC package, electrical specifications, and operating characteristics ensure direct compatibility without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the MAX765ESA+ be used as a direct replacement for MAX765ESA in existing designs?

A: Yes. The MAX765ESA+ is electrically and mechanically equivalent to the MAX765ESA. Both devices feature identical output voltage (-1V fixed, -12V range), output current (120mA), input voltage range (3V to 16V), switching frequency (300kHz), and 8-SOIC package configuration. No circuit modifications are required.

Q: What is the primary difference between MAX765ESA and MAX765ESA+?

A: The MAX765ESA+ is the active production variant with ROHS3 compliance, while the MAX765ESA is obsolete and RoHS non-compliant. Functionally, both devices are identical.

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

A: No. Both the MAX765ESA and MAX765ESA+ use the 8-SOIC (0.154", 3.90mm Width) package with identical pinout and mechanical dimensions.

Q: What is the moisture sensitivity level for these components?

A: Both the MAX765ESA and MAX765ESA+ have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.

Q: Can these devices operate across the full -40°C to 85°C temperature range?

A: Yes. Both the MAX765ESA and MAX765ESA+ are rated for continuous operation across the -40°C to 85°C ambient temperature range.