MAX1681ESA Equivalent & Substitute Parts

Part Overview

The MAX1681ESA is a charge pump switching regulator IC manufactured by Analog Devices Inc./Maxim Integrated. This component functions as a positive or negative fixed output power management IC with a single output delivering 125mA. The device operates across an input voltage range of 2V to 5.5V and is housed in an 8-SOIC surface mount package.

The MAX1681ESA is classified as obsolete, which necessitates identification of equivalent substitute components for new designs or ongoing production requirements. Active alternatives with identical electrical and mechanical specifications are available to ensure design continuity and supply chain reliability.

Substiute Parts

MAX1681ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 5338MAX1681ESA Datasheet

Current PartRFQ

MAX1681ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1955MAX1681ESA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX1681ESA is determined by strict equivalence across the following critical parameters:

• Topology: Charge pump switching regulator architecture
• Output Configuration: Positive or negative fixed output capability
• Output Current: 125mA rated output
• Input Voltage Range: 2V to 5.5V operation
• Output Voltage Options: -Vin or 2Vin fixed outputs
• Switching Frequency: 500kHz or 1MHz operation
• Package: 8-SOIC (0.154", 3.90mm Width) surface mount
• Operating Temperature Range: -40°C to 85°C

The MAX1681ESA+ is a direct substitute that maintains identical electrical specifications and mechanical compatibility while offering improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The MAX1681ESA+ is the direct substitute for the obsolete MAX1681ESA. Both components share identical electrical specifications and mechanical packaging, ensuring pin-for-pin compatibility and functional equivalence in circuit applications.

The MAX1681ESA+ offers the advantage of active product status, indicating ongoing manufacturer support and availability. Additionally, the MAX1681ESA+ achieves ROHS3 compliance, whereas the original MAX1681ESA is RoHS non-compliant. This compliance improvement aligns with current regulatory requirements for electronic component manufacturing and distribution.

Both parts maintain identical moisture sensitivity levels (MSL 1 - Unlimited) and REACH unaffected status, ensuring consistent handling and environmental compliance across substitution.

Frequently Asked Questions (FAQ)

Q: Can the MAX1681ESA+ be used as a direct replacement for the MAX1681ESA?

A: Yes. The MAX1681ESA+ is electrically and mechanically equivalent to the MAX1681ESA. Both components feature identical input voltage ranges (2V to 5.5V), output current capability (125mA), switching frequencies (500kHz, 1MHz), operating temperature range (-40°C to 85°C), and 8-SOIC package dimensions.

Q: What is the primary difference between these two parts?

A: The MAX1681ESA+ is an active product with ROHS3 compliance, while the MAX1681ESA is obsolete and RoHS non-compliant. The electrical and mechanical specifications remain identical.

Q: Are there any package or pinout differences?

A: No. Both the MAX1681ESA and MAX1681ESA+ use the 8-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout and mechanical dimensions.

Q: What output voltage configurations are supported?

A: Both parts support fixed output configurations of either -Vin or 2Vin, determined by application circuit design and component selection.

Q: Is the moisture sensitivity level the same for both parts?

A: Yes. Both components have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.