MAX724CCK Equivalent & Substitute Parts

Part Overview

The MAX724CCK is a Buck, Boost, and Flyback Switching Regulator IC manufactured by Analog Devices Inc./Maxim Integrated. It provides positive or negative adjustable output voltage with a maximum switch current of 5.5A in a TO-220-5 package. The device operates across an input voltage range of 8V to 40V with adjustable output voltage from 2.5V to 35V at a switching frequency of 100kHz.

The MAX724CCK is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing system maintenance, design updates, and new production requirements where the original component is no longer readily available from primary sources.

Substiute Parts

MAX724CCK

Analog Devices Inc./Maxim IntegratedIn Stock: 1227MAX724CCK Datasheet

Current PartRFQ

LT1076HVCT#PBF

Analog Devices Inc.In Stock: 1231LT1076HVCT#PBF Datasheet

MFR RecommendedRFQ

LT1076HVIT#PBF

Analog Devices Inc.In Stock: 2029LT1076HVIT#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX724CCK is based on the following critical parameters that must align across parts:

• Topology and Function: Buck, Boost, and Flyback switching regulator capability with Step-Up, Step-Down, and Step-Up/Step-Down functionality
• Output Configuration: Positive or negative adjustable output
• Number of Outputs: Single output
• Output Voltage Range: Adjustable from 2.5V to 35V minimum
• Switching Frequency: 100kHz operation
• Package: TO-220-5 through-hole mounting
• Synchronous Rectifier: Not present

The substitute parts LT1076HVCT#PBF and LT1076HVIT#PBF meet these core functional and mechanical requirements. Both are manufactured by Analog Devices Inc. and share identical topology, output configuration, voltage ranges, switching frequency, and package specifications. The primary difference between substitutes and the original part is the maximum output current rating, which is reduced from 5.5A to 2A in the LT1076 series.

Parameter Comparison

Engineering Selection Recommendations

Both LT1076HVCT#PBF and LT1076HVIT#PBF are active products from Analog Devices Inc. and represent direct functional equivalents to the obsolete MAX724CCK. Both substitute parts are ROHS3 compliant, addressing regulatory requirements that the original part does not meet.

The LT1076HVIT#PBF offers an extended operating temperature range of -40°C to 85°C compared to the 0°C to 70°C range of both the MAX724CCK and LT1076HVCT#PBF. This extended range is suitable for applications requiring operation across wider environmental conditions.

The maximum input voltage specification for both LT1076 variants is 64V, exceeding the 40V maximum of the MAX724CCK. This provides additional design margin for input voltage transients and system variations.

The critical design consideration is the reduced maximum output current of 2A in the LT1076 series versus 5.5A in the MAX724CCK. Applications requiring output currents exceeding 2A cannot use these substitutes without circuit redesign or parallel device configurations.

Frequently Asked Questions (FAQ)

Q: Can LT1076HVCT#PBF and LT1076HVIT#PBF be used interchangeably with MAX724CCK?

A: Both LT1076 variants share identical functional topology, output configuration, voltage specifications, and TO-220-5 package with the MAX724CCK. However, the maximum output current is reduced from 5.5A to 2A. Substitution is valid only for applications where the required output current does not exceed 2A.

Q: What is the difference between LT1076HVCT#PBF and LT1076HVIT#PBF?

A: Both parts are functionally identical with the same electrical specifications. The primary difference is the operating temperature range: LT1076HVCT#PBF operates from 0°C to 70°C, while LT1076HVIT#PBF operates from -40°C to 85°C. Select LT1076HVIT#PBF for applications requiring extended temperature operation.

Q: Are the substitute parts pin-compatible with MAX724CCK?

A: Both LT1076 variants use the TO-220-5 package, matching the MAX724CCK package specification. Pin compatibility is confirmed by the identical package designation.

Q: Do the substitute parts meet current regulatory requirements?

A: Yes. Both LT1076HVCT#PBF and LT1076HVIT#PBF are ROHS3 compliant, whereas the MAX724CCK is RoHS non-compliant. Both substitute parts are REACH unaffected and classified under ECCN EAR99.

Q: What is the impact of the higher maximum input voltage specification in the LT1076 series?

A: The LT1076 variants support input voltages up to 64V compared to 40V for the MAX724CCK. This extended specification provides additional design margin and may accommodate a wider range of input supply conditions without circuit modification.

Q: Can the reduced output current rating of the LT1076 series be overcome through circuit design?

A: The 2A output current rating is a fundamental device specification. Applications requiring higher output currents must either use alternative components with higher current ratings or implement parallel device configurations with appropriate current-sharing circuitry.