CS5173ED8G Equivalent & Substitute Parts

Part Overview

The CS5173ED8G is a multi-configuration adjustable switching regulator IC manufactured by onsemi, designed for buck, boost, flyback, forward converter, and SEPIC topologies. This component supports positive or negative adjustable output configurations with a 1.5A switch current rating and operates across a wide input voltage range of 2.7V to 30V. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

CS5173ED8G

onsemiIn Stock: 824CS5173ED8G Datasheet

Current PartRFQ

CS5173EDR8G

onsemiIn Stock: 4499CS5173EDR8G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS5173ED8G is based on strict equivalence across the following critical parameters:

• Identical topology support: Buck, Boost, Flyback, Forward Converter, SEPIC
• Matching output configuration: Positive or Negative adjustable
• Equivalent electrical specifications: 1.5A switch current, 560kHz switching frequency, 2.7V to 30V input range, 1.28V to 40V output range
• Identical package: 8-SOIC (0.154", 3.90mm Width)
• Matching operating temperature range: -40°C to 125°C
• Surface mount mounting type

The CS5173EDR8G meets all these criteria and serves as a direct functional equivalent. The primary distinction between these parts is product status and packaging format, not electrical or mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The CS5173EDR8G is the appropriate substitute for the obsolete CS5173ED8G. Both parts share identical electrical and mechanical specifications, including topology support, output configuration, current rating, switching frequency, voltage ranges, package type, and operating temperature range.

The CS5173EDR8G carries Active product status, ensuring continued manufacturer support and availability. This part is ROHS3 compliant, meeting current environmental and regulatory requirements. The packaging format difference (Cut Tape & Digi-Reel® versus tube) does not affect functional compatibility and reflects standard industry practices for active production components.

Frequently Asked Questions (FAQ)

Q: Can the CS5173EDR8G be used as a direct replacement for the CS5173ED8G?

A: Yes. Both parts are manufactured by onsemi and share identical electrical specifications, topology support, output configuration, current rating, switching frequency, voltage ranges, package type, and operating temperature range. The parts are functionally equivalent.

Q: What is the difference between CS5173ED8G and CS5173EDR8G?

A: The primary differences are product status and packaging format. The CS5173ED8G is obsolete and supplied in tube packaging. The CS5173EDR8G is active and supplied in Cut Tape and Digi-Reel® formats. The CS5173EDR8G also carries ROHS3 compliance certification.

Q: Are there any package compatibility concerns when switching from CS5173ED8G to CS5173EDR8G?

A: No. Both parts use the identical 8-SOIC (0.154", 3.90mm Width) package. PCB footprints, lead spacing, and mounting procedures remain unchanged.

Q: Does the CS5173EDR8G support the same topologies as the CS5173ED8G?

A: Yes. Both parts support buck, boost, flyback, forward converter, and SEPIC topologies with identical electrical performance across all supported configurations.

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

A: Substitution compatibility is determined by matching topology support, output configuration (positive or negative adjustable), 1.5A switch current, 560kHz switching frequency, 2.7V to 30V input voltage range, 1.28V to 40V output voltage range, and -40°C to 125°C operating temperature range.