MAX634EPA Equivalent & Substitute Parts

Part Overview

The MAX634EPA is a buck-boost switching regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for negative adjustable output applications. This component operates as a step-up/step-down converter with a single negative output, capable of delivering 150mA across an input voltage range of 2.6V to 16.5V. The device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

MAX634EPA

Analog Devices Inc./Maxim IntegratedIn Stock: 2339MAX634EPA Datasheet

Current PartRFQ

MAX634EPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 834MAX634EPA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX634EPA is determined by strict equivalence across the following critical parameters:

• Base product number (MAX634 series)
• Functional topology (buck-boost switching regulator)
• Output configuration (negative adjustable)
• Electrical specifications (input voltage range, output voltage range, output current)
• Package type (8-DIP through-hole)
• Operating temperature range

The MAX634EPA+ qualifies as a direct substitute based on identical electrical performance characteristics and package compatibility. Both devices share the same base product number, topology, and electrical ratings. The primary distinction is regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The MAX634EPA+ is a direct functional equivalent to the MAX634EPA. Both devices are obsolete products from the same manufacturer with identical electrical specifications and package configurations. The MAX634EPA+ offers improved regulatory compliance, meeting ROHS3 standards, whereas the original MAX634EPA is RoHS non-compliant. For applications requiring RoHS compliance or environmental regulations adherence, the MAX634EPA+ is the appropriate selection. Both devices maintain REACH Unaffected status and identical ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the MAX634EPA+ be used as a direct replacement for the MAX634EPA?

A: Yes. Both devices share identical electrical specifications, including input voltage range (2.6V to 16.5V), output voltage range (-2.6V to -20V), output current (150mA), switching frequency (100Hz to 75kHz), and 8-DIP package configuration. Pin-for-pin compatibility is maintained.

Q: What is the primary difference between MAX634EPA and MAX634EPA+?

A: The MAX634EPA+ is ROHS3 compliant, while the MAX634EPA is RoHS non-compliant. All electrical and functional characteristics remain identical.

Q: Are both parts still available for procurement?

A: Both the MAX634EPA and MAX634EPA+ are classified as obsolete products. Availability is limited to existing inventory from authorized distributors.

Q: Does the package type differ between these devices?

A: No. Both devices use the same 8-DIP (0.300", 7.62mm) through-hole package, ensuring identical PCB layout compatibility.

Q: What applications are suitable for these buck-boost regulators?

A: The MAX634EPA and MAX634EPA+ are designed for applications requiring negative adjustable voltage outputs with input voltage flexibility. The 150mA output current and adjustable topology support diverse power management requirements across the specified input and output voltage ranges.