MAX856CSA Equivalent & Substitute Parts

Part Overview

The MAX856CSA is a boost switching regulator IC from Analog Devices Inc./Maxim Integrated, designed for positive programmable output voltage regulation. This device functions as a step-up converter with a single programmable output capable of delivering 500mA at either 3.3V or 5V from input voltages ranging from 0.8V to 6V. The MAX856CSA operates at a switching frequency of 500kHz and is packaged in an 8-SOIC surface mount configuration.

The MAX856CSA is classified as obsolete. Identifying equivalent substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity when original inventory becomes unavailable.

Substiute Parts

MAX856CSA

Analog Devices Inc./Maxim IntegratedIn Stock: 3559MAX856CSA Datasheet

Current PartRFQ

MAX856CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 17439MAX856CSA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX856CSA are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution validity:

• Identical boost converter topology and step-up function
• Matching input voltage range (0.8V to 6V)
• Identical programmable output voltage options (3.3V, 5V)
• Equivalent output current capability (500mA switch rating)
• Same switching frequency (500kHz)
• Identical package type (8-SOIC with 0.154" / 3.90mm width)
• Surface mount mounting type
• Operating temperature range compatibility (0°C ~ 70°C minimum)
• Same base product number (MAX856 series)

The MAX856CSA+ meets all substitution criteria and is classified as a direct equivalent within the MAX856 product family.

Parameter Comparison

Engineering Selection Recommendations

The MAX856CSA+ is the direct substitute for the MAX856CSA. Both parts share identical electrical specifications and package configurations, ensuring functional compatibility in boost converter applications requiring 500mA output at 3.3V or 5V from 0.8V to 6V input.

The MAX856CSA+ offers the advantage of active product status and ROHS3 compliance, making it the preferred selection for new designs and legacy system updates. The MAX856CSA is obsolete and should be replaced with the MAX856CSA+ for long-term supply chain reliability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the MAX856CSA+ directly replace the MAX856CSA in existing designs?

A: Yes. The MAX856CSA+ is electrically and mechanically identical to the MAX856CSA. Both devices feature the same input voltage range (0.8V to 6V), programmable output voltages (3.3V, 5V), 500mA output current, 500kHz switching frequency, and 8-SOIC package. No circuit modifications are required.

Q: What is the difference between MAX856CSA and MAX856CSA+?

A: The primary differences are product status and compliance. The MAX856CSA is obsolete and RoHS non-compliant, while the MAX856CSA+ is active and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are there any package differences between these parts?

A: No. Both the MAX856CSA and MAX856CSA+ use the 8-SOIC (0.154", 3.90mm Width) surface mount package. PCB layout and component placement remain unchanged.

Q: What is the significance of the "+" suffix in MAX856CSA+?

A: The "+" suffix indicates a newer revision or variant within the MAX856 product family. In this case, it denotes the active, RoHS3-compliant version of the boost regulator IC.

Q: Is the MAX856CSA+ available in different packaging options?

A: The MAX856CSA+ is supplied in Tube packaging, while the MAX856CSA packaging is not specified. Both use the same 8-SOIC case type for the die itself.