MAX636ACSA Equivalent & Substitute Parts

Part Overview

The MAX636ACSA is a buck switching regulator IC from Analog Devices Inc./Maxim Integrated designed for negative voltage regulation. It delivers a fixed output of -1.31V (-12V) at 200mA with an input voltage range of 2.3V to 16.5V. The device operates at a switching frequency of 50kHz and is housed in an 8-SOIC surface mount package.

The MAX636ACSA is classified as obsolete, which necessitates identification of equivalent substitute parts for new designs or component replenishment. Active alternatives with identical electrical and mechanical specifications are available to ensure design continuity and supply chain reliability.

Substiute Parts

MAX636ACSA

Analog Devices Inc./Maxim IntegratedIn Stock: 2215MAX636ACSA Datasheet

Current PartRFQ

MAX636ACSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1513MAX636ACSA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX636ACSA is determined by strict equivalence across the following critical parameters:

• Output Voltage Specification: -1.31V (-12V) fixed output
• Output Current Rating: 200mA minimum
• Input Voltage Range: 2.3V to 16.5V
• Topology: Buck switching regulator with negative output configuration
• Package: 8-SOIC surface mount form factor
• Switching Frequency: 50kHz operation
• Temperature Range: 0°C to 70°C operating specification

Only parts meeting all these criteria without deviation are classified as direct substitutes. The MAX636ACSA+ variant satisfies all electrical and mechanical requirements for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

The MAX636ACSA+ is the direct active substitute for the obsolete MAX636ACSA. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical specifications and package geometry.

The primary distinction is product status and regulatory compliance. The MAX636ACSA+ carries active product status with ROHS3 compliance, whereas the original MAX636ACSA is obsolete and RoHS non-compliant. For new designs or long-term supply requirements, the MAX636ACSA+ is the appropriate selection.

Both parts operate within the same input voltage range (2.3V to 16.5V), deliver identical output specifications (-1.31V/-12V at 200mA), and function at 50kHz switching frequency. The 8-SOIC package footprint is identical, permitting direct PCB layout compatibility without modification.

Frequently Asked Questions (FAQ)

Q: Can MAX636ACSA+ be used as a direct replacement for MAX636ACSA in existing designs?

A: Yes. The MAX636ACSA+ is electrically and mechanically identical to the MAX636ACSA. Output voltage, current rating, input voltage range, switching frequency, and 8-SOIC package dimensions are equivalent. PCB layout and schematic integration require no modification.

Q: What is the primary reason to transition from MAX636ACSA to MAX636ACSA+?

A: The MAX636ACSA is classified as obsolete with limited inventory availability. The MAX636ACSA+ is an active product with ROHS3 compliance, ensuring long-term supply chain access and regulatory alignment for new production.

Q: Are there differences in thermal performance or operating characteristics between these parts?

A: No. Both parts operate at 0°C to 70°C and share identical thermal and electrical characteristics. Switching frequency, output current capability, and input voltage specifications are unchanged.

Q: Does the package type differ between MAX636ACSA and MAX636ACSA+?

A: No. Both parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package. Pin configuration, footprint, and mounting requirements are identical.

Q: What is the significance of RoHS compliance difference?

A: The MAX636ACSA+ is ROHS3 compliant, meeting current environmental and hazardous substance restrictions. The original MAX636ACSA is RoHS non-compliant. For applications subject to RoHS regulations or customer requirements, the MAX636ACSA+ is the appropriate selection.