MAX631ACSA Equivalent & Substitute Parts

Part Overview

The MAX631ACSA is a boost and charge pump switching regulator IC from Analog Devices Inc./Maxim Integrated, designed for power management applications requiring step-up voltage conversion. This component operates as a positive or negative adjustable (fixed) regulator with a single output capable of 450mA switching current. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

MAX631ACSA

Analog Devices Inc./Maxim IntegratedIn Stock: 2304MAX631ACSA Datasheet

Current PartRFQ

MAX631ACSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1964MAX631ACSA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX631ACSA is determined by strict equivalence across the following critical parameters:

• Topology: Boost and Charge Pump switching regulator
• Output Configuration: Positive or Negative
• Output Type: Adjustable (Fixed)
• Number of Outputs: Single output
• Input Voltage Range: 2V to 16.5V
• Output Voltage Range: 1.31V (5V) to 18V (Switch)
• Output Current: 450mA (Switch)
• Switching Frequency: 45kHz
• Package: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

The MAX631ACSA+ qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction between these parts is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MAX631ACSA+ is the direct functional equivalent of the MAX631ACSA. Both parts share identical electrical and mechanical specifications, including input/output voltage ranges, output current capacity, switching frequency, and package configuration.

The MAX631ACSA+ offers two significant advantages for new designs and system replacements:

1. Active Product Status: The MAX631ACSA+ maintains active production status, ensuring continued availability and supply chain reliability.

2. Regulatory Compliance: The MAX631ACSA+ is ROHS3 compliant, meeting current environmental and regulatory requirements, whereas the original MAX631ACSA is RoHS non-compliant.

For applications where RoHS compliance is mandatory or where long-term component availability is required, the MAX631ACSA+ is the appropriate selection. Both parts are functionally interchangeable at the circuit level.

Frequently Asked Questions (FAQ)

Q: Are the MAX631ACSA and MAX631ACSA+ pin-compatible?

A: Yes. Both parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pin configurations, enabling direct substitution without PCB redesign.

Q: What is the primary reason to substitute the MAX631ACSA?

A: The MAX631ACSA is classified as obsolete. The MAX631ACSA+ provides an active, production-supported alternative with identical electrical performance.

Q: Does the MAX631ACSA+ meet RoHS requirements?

A: Yes. The MAX631ACSA+ is ROHS3 compliant. The original MAX631ACSA is RoHS non-compliant.

Q: Are there differences in electrical performance between these parts?

A: No. Both parts operate identically across all specified electrical parameters: input voltage range (2V to 16.5V), output voltage range (1.31V to 18V), output current (450mA), and switching frequency (45kHz).

Q: What packaging options are available?

A: The MAX631ACSA+ is supplied in Tube packaging. The original MAX631ACSA packaging specification is not provided in the technical data.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The MAX631ACSA+ is a direct substitute for the MAX631ACSA in all applications requiring boost and charge pump switching regulation with the specified electrical and thermal characteristics.