CS5173GD8G Equivalent & Substitute Parts

Part Overview

The CS5173GD8G 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 CS5173GD8G is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator topology.

Substiute Parts

CS5173GD8G

onsemiIn Stock: 2626CS5173GD8G Datasheet

Current PartRFQ

CS5173GDR8G

onsemiIn Stock: 1294CS5173GDR8G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS5173GD8G is determined by strict equivalence across the following critical parameters:

• Input voltage range: 2.7V to 30V
• Output voltage adjustability: 1.28V minimum to 40V maximum
• Output current capability: 1.5A (Switch)
• Switching frequency: 560kHz
• Topology support: Buck, Boost, Flyback, Forward Converter, SEPIC
• Package type: 8-SOIC (0.154", 3.90mm Width)
• Operating temperature range: 0°C ~ 125°C (TJ)

Only parts meeting all these specifications qualify as direct substitutes. The CS5173GDR8G satisfies all substitution criteria and is listed as an equivalent part.

Parameter Comparison

Engineering Selection Recommendations

The CS5173GDR8G is the qualified substitute for the obsolete CS5173GD8G. Both parts share identical electrical specifications, topology support, and package configuration. The primary distinction is product status: the CS5173GDR8G is actively manufactured and supported by onsemi, while the CS5173GD8G is obsolete.

The CS5173GDR8G carries ROHS3 compliance certification, providing enhanced environmental and regulatory alignment for new designs and ongoing production. Both parts maintain REACH Unaffected status and EAR99 export classification.

Selection of the CS5173GDR8G ensures access to current manufacturing support, documented supply availability, and compliance with modern regulatory requirements while maintaining full electrical and mechanical compatibility with existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the CS5173GDR8G directly replace the CS5173GD8G in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including input/output voltage ranges, current ratings, switching frequency, topology support, and 8-SOIC package configuration. No circuit modifications are required.

Q: What is the primary reason to transition from CS5173GD8G to CS5173GDR8G?

A: The CS5173GD8G is obsolete and no longer manufactured. The CS5173GDR8G is the active equivalent part from onsemi, ensuring continued supply chain access and manufacturer support.

Q: Are there packaging differences between these parts?

A: The CS5173GD8G is supplied in standard packaging, while the CS5173GDR8G is available in Cut Tape (CT) and Digi-Reel® packaging options. Both use the same 8-SOIC (0.154", 3.90mm Width) case. Packaging format does not affect electrical performance or pin compatibility.

Q: Do these parts have different compliance certifications?

A: Both parts maintain REACH Unaffected status and EAR99 export classification. The CS5173GDR8G additionally carries ROHS3 compliance certification, providing enhanced regulatory alignment for applications requiring modern environmental standards.

Q: What is the moisture sensitivity level for these parts?

A: Both the CS5173GD8G and CS5173GDR8G have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.