MAX664CSA Linear Voltage Regulator IC

Part Overview

The MAX664CSA is a linear voltage regulator IC designed for negative adjustable (fixed) output applications. This Surface Mount device delivers 40mA output current in an 8-SOIC package and is classified as obsolete. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for ongoing design support and procurement continuity.

Substiute Parts

MAX664CSA

Analog Devices Inc./Maxim IntegratedIn Stock: 10041MAX664CSA Datasheet

Current PartRFQ

MAX664CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 5129MAX664CSA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX664CSA is determined by strict equivalence across the following critical parameters:

• Output Configuration: Negative polarity regulation
• Output Type: Adjustable (Fixed) capability
• Number of Regulators: Single output
• Voltage specifications: Input maximum -16.5V, output range -1.3V to -16V
• Current rating: 40mA output capability
• Voltage Dropout: 0.35V @ 40mA
• Quiescent Current: 15 µA
• Control Features: Current Limit and Enable functions
• Package: 8-SOIC form factor
• Mounting: Surface Mount technology

The MAX664CSA+ meets all these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The MAX664CSA+ is the direct substitute for the obsolete MAX664CSA. Both parts share identical electrical specifications and package form factor, ensuring pin-for-pin compatibility and functional equivalence in circuit applications.

The primary distinction is product status and regulatory compliance. The MAX664CSA+ maintains active production status and achieves ROHS3 compliance, whereas the original MAX664CSA is obsolete and RoHS non-compliant. For new designs or ongoing production requiring regulatory compliance, the MAX664CSA+ is the appropriate selection.

Both parts maintain identical moisture sensitivity classification (MSL 1) and REACH status, confirming environmental handling and supply chain compatibility.

Frequently Asked Questions (FAQ)

Q: Can MAX664CSA+ be used as a direct replacement for MAX664CSA?

A: Yes. The MAX664CSA+ is electrically and mechanically identical to the MAX664CSA. Pin configuration, package dimensions (8-SOIC), and all electrical parameters including voltage ratings, current output, and control features are equivalent. Direct substitution is supported without circuit modification.

Q: What is the primary reason to transition from MAX664CSA to MAX664CSA+?

A: The MAX664CSA is obsolete and no longer manufactured. The MAX664CSA+ is the active production equivalent. Additionally, the MAX664CSA+ achieves ROHS3 compliance, whereas the original part is RoHS non-compliant, making it necessary for applications subject to regulatory requirements.

Q: Are there any package or mounting differences between these parts?

A: No. Both parts use the 8-SOIC (0.154", 3.90mm Width) Surface Mount package. PCB layout and assembly processes require no modification.

Q: Do both parts have the same moisture sensitivity level?

A: Yes. Both MAX664CSA and MAX664CSA+ are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching negative output configuration, adjustable (fixed) output type, -16.5V maximum input voltage, -1.3V to -16V output range, 40mA output current, 0.35V maximum dropout voltage, 15 µA quiescent current, and Current Limit and Enable control features.