CS5174EDR8G Equivalent & Substitute Parts

Part Overview

The CS5174EDR8G is a multi-configuration adjustable switching regulator IC from onsemi, designed for buck, boost, flyback, forward converter, and SEPIC topologies. It supports positive or negative output configurations with 1.5A switch current capability and operates across a 2.7V to 30V input range. The device is classified as obsolete, making identification of suitable alternatives essential for ongoing design support and production continuity.

Substiute Parts

CS5174EDR8G

onsemiIn Stock: 1510CS5174EDR8G Datasheet

Current PartRFQ

CS5173GDR8G

onsemiIn Stock: 1294CS5173GDR8G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS5174EDR8G is determined by the following critical parameters:

• Package compatibility: 8-SOIC form factor with identical 0.154" (3.90mm) width
• Input voltage range: 2.7V to 30V minimum requirement
• Output current capability: 1.5A switch current
• Switching frequency: 560kHz operation
• Topology support: Buck, boost, flyback, forward converter, and SEPIC configurations
• Mounting type: Surface mount technology

The CS5173GDR8G qualifies as a direct substitute based on matching all critical electrical and mechanical parameters within the allowed specification envelope.

Parameter Comparison

Engineering Selection Recommendations

The CS5173GDR8G is a qualified substitute for the obsolete CS5174EDR8G. Both devices share identical electrical specifications, package geometry, and functional capabilities across all supported topologies. The CS5173GDR8G maintains active product status with onsemi, ensuring continued availability and manufacturing support.

Compliance certifications are equivalent between the two parts: both are REACH unaffected and classified under ECCN EAR99. The CS5173GDR8G carries RoHS3 compliance, providing additional regulatory alignment for modern production environments.

Operating temperature ranges differ slightly: the CS5174EDR8G operates from -40°C to 125°C, while the CS5173GDR8G operates from 0°C to 125°C. Design applications requiring sub-zero operation must account for this specification difference.

Frequently Asked Questions (FAQ)

Q: Can the CS5173GDR8G directly replace the CS5174EDR8G in existing designs?

A: Yes, the CS5173GDR8G is a direct substitute. Both devices share identical package geometry (8-SOIC), input voltage range (2.7V to 30V), output current (1.5A), switching frequency (560kHz), and topology support. Pin-for-pin compatibility is maintained.

Q: What is the primary difference between these two parts?

A: The CS5174EDR8G is obsolete, while the CS5173GDR8G is active. The CS5173GDR8G also has a narrower operating temperature range (0°C to 125°C versus -40°C to 125°C) and includes RoHS3 compliance certification.

Q: Are there packaging format differences?

A: Both parts use the 8-SOIC package with 0.154" (3.90mm) width. The CS5173GDR8G is available in Cut Tape (CT) and Digi-Reel® formats, while the CS5174EDR8G packaging format is not specified in available documentation.

Q: Do these parts support the same converter topologies?

A: Yes. Both the CS5174EDR8G and CS5173GDR8G support buck, boost, flyback, forward converter, and SEPIC topologies with positive or negative output configurations.

Q: What compliance certifications apply to both parts?

A: Both parts are REACH unaffected, classified under ECCN EAR99, and carry HTSUS code 8542.39.0001. The CS5173GDR8G additionally carries RoHS3 compliance.