MAX858CSA Equivalent & Substitute Parts

Part Overview

The MAX858CSA is a boost switching regulator IC from Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) component. This device functions as a step-up converter with positive output configuration, delivering programmable output voltages of 3.3V or 5V at 125mA switch current. The MAX858CSA operates from an input voltage range of 0.8V to 6V with a switching frequency of 500kHz and is housed in an 8-SOIC package measuring 0.154" (3.90mm width).

The MAX858CSA carries an obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

MAX858CSA

Analog Devices Inc./Maxim IntegratedIn Stock: 2434MAX858CSA Datasheet

Current PartRFQ

MAX858CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 988MAX858CSA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX858CSA is determined by strict equivalence across the following critical parameters:

• Topology & Function: Boost switching regulator with step-up conversion capability
• Output Configuration: Positive output with programmable voltage selection
• Electrical Specifications: Input voltage range 0.8V to 6V, output voltages 3.3V or 5V, 125mA switch current, 500kHz switching frequency
• Package Compatibility: 8-SOIC surface mount package (0.154", 3.90mm width)
• Operating Temperature Range: 0°C to 70°C
• Pin Configuration: Single output, non-synchronous rectifier topology

The MAX858CSA+ qualifies as a direct substitute based on identical electrical performance, package form factor, and functional specifications. The primary distinction lies in product status and compliance certifications rather than technical performance parameters.

Parameter Comparison

Engineering Selection Recommendations

The MAX858CSA+ is the direct substitute for the MAX858CSA. Both devices are electrically and functionally identical across all specified parameters. The MAX858CSA+ is preferred for new designs and ongoing production due to its active product status and ROHS3 compliance certification. The MAX858CSA, classified as obsolete, should be replaced with the MAX858CSA+ in applications where regulatory compliance and long-term supply chain availability are considerations.

Selection between these parts should be based on product lifecycle requirements and compliance mandates applicable to the end application. The MAX858CSA+ maintains full backward compatibility with existing circuit designs utilizing the MAX858CSA.

Frequently Asked Questions (FAQ)

Q: Are the MAX858CSA and MAX858CSA+ electrically interchangeable?

A: Yes. Both devices share identical electrical specifications, including input voltage range (0.8V to 6V), output voltage options (3.3V, 5V), output current (125mA), switching frequency (500kHz), and operating temperature range (0°C to 70°C). They are pin-compatible and functionally equivalent.

Q: What is the primary difference between MAX858CSA and MAX858CSA+?

A: The MAX858CSA carries an obsolete product status, while the MAX858CSA+ is active. Additionally, the MAX858CSA+ is ROHS3 compliant, whereas the MAX858CSA is RoHS non-compliant. Both devices share identical electrical performance and package specifications.

Q: Can I use MAX858CSA+ in place of MAX858CSA in existing designs?

A: Yes. The MAX858CSA+ is a direct substitute with no circuit modifications required. The identical package (8-SOIC), pin configuration, and electrical characteristics ensure seamless replacement in existing applications.

Q: What packaging options are available?

A: The MAX858CSA is supplied in standard packaging, while the MAX858CSA+ is available in Tube packaging. Both use the 8-SOIC (0.154", 3.90mm width) surface mount package form factor.

Q: Are there any compliance differences I should consider?

A: The MAX858CSA+ is ROHS3 compliant and carries active product status, making it suitable for applications with regulatory compliance requirements. The MAX858CSA is RoHS non-compliant and obsolete. For new designs or applications requiring environmental compliance certification, the MAX858CSA+ is the appropriate selection.

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

A: Both the MAX858CSA and MAX858CSA+ have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited moisture sensitivity tolerance and no special storage or handling requirements.