MAX1658ESA Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The MAX1658ESA is a linear voltage regulator IC from Analog Devices Inc./Maxim Integrated, designed for positive adjustable output applications. This device delivers 350mA output current in an 8-SOIC surface mount package and is classified as a Power Management (PMIC) component. The MAX1658ESA is currently listed as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain identical electrical performance characteristics and package compatibility to ensure direct replacement capability.

Substiute Parts

MAX1658ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 17159MAX1658ESA Datasheet

Current PartRFQ

MAX1658ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2369MAX1658ESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX1658ESA is determined by strict equivalence across the following critical parameters:

• Output Configuration & Type: Must be positive adjustable (fixed) output with single regulator topology
• Electrical Performance: Input voltage range (16.5V max), output voltage range (1.25V to 16V), dropout voltage (1.5V @ 350mA), and output current (350mA) must be identical
• Quiescent Current: 60 µA specification must be maintained
• Protection & Control: Over current, over temperature, and reverse polarity protection with enable control feature required
• Package Compatibility: 8-SOIC surface mount package with 0.154" (3.90mm) width is mandatory for PCB layout compatibility
• Operating Temperature Range: -40°C to 85°C specification must be met

The MAX1658ESA+ meets all substitution criteria as a direct equivalent part with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The MAX1658ESA+ is the direct substitute for the obsolete MAX1658ESA. Both parts share identical electrical specifications and package geometry, ensuring functional equivalence in circuit applications. The primary distinction is product status: the MAX1658ESA is obsolete while the MAX1658ESA+ is active and currently in production.

The MAX1658ESA+ offers improved compliance status, meeting ROHS3 requirements compared to the non-compliant status of the original part. This compliance improvement is significant for applications subject to environmental regulations. Both parts maintain REACH unaffected status and EAR99 export classification.

For new designs or production continuity, the MAX1658ESA+ is the appropriate selection. The active product status ensures long-term availability and supply chain stability. Electrical performance remains unchanged, allowing direct substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can MAX1658ESA+ directly replace MAX1658ESA in existing designs?

A: Yes. The MAX1658ESA+ is electrically and mechanically identical to the MAX1658ESA. All electrical parameters, output specifications, protection features, and package dimensions are equivalent. Direct substitution is possible without circuit modification.

Q: What is the primary reason to substitute the MAX1658ESA?

A: The MAX1658ESA is classified as obsolete. The MAX1658ESA+ is the active equivalent part, ensuring continued availability and supply chain support for production and design continuity.

Q: Are there package compatibility concerns?

A: No. Both parts use the 8-SOIC surface mount package with identical 0.154" (3.90mm) width specification. PCB layouts and footprints are fully compatible.

Q: Does the MAX1658ESA+ meet modern compliance requirements?

A: The MAX1658ESA+ is ROHS3 compliant, whereas the original MAX1658ESA is non-compliant. For applications requiring environmental compliance, the MAX1658ESA+ is the appropriate choice.

Q: Are the output voltage ranges identical?

A: Yes. Both parts support adjustable (fixed) output from 1.25V to 16V with identical 350mA output current capability and 1.5V maximum dropout voltage at rated current.

Q: What protection features are included in both parts?

A: Both the MAX1658ESA and MAX1658ESA+ include over current protection, over temperature protection, and reverse polarity protection with enable control functionality.