CS5172GD8G Equivalent & Substitute Parts

Part Overview

The CS5172GD8G 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 adjustable 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 equivalent substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

CS5172GD8G

onsemiIn Stock: 793CS5172GD8G Datasheet

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CS5172EDR8G

onsemiIn Stock: 2495CS5172EDR8G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS5172GD8G is determined by strict equivalence across the following critical parameters:

• Topology support: Buck, Boost, Flyback, Forward Converter, SEPIC
• Output configuration: Positive or Negative adjustable
• Input voltage range: 2.7V to 30V
• Output current capability: 1.5A (Switch)
• Switching frequency: 280kHz
• Package type: 8-SOIC (0.154", 3.90mm Width)
• Pin-for-pin compatibility and functional equivalence

The CS5172EDR8G meets all electrical and mechanical substitution criteria. Both devices share the same base product number (CS5172), identical electrical specifications, and compatible packaging. The primary distinction is packaging format (tape reel versus cut tape) and operating temperature range extension.

Parameter Comparison

Engineering Selection Recommendations

The CS5172EDR8G is a direct functional equivalent to the CS5172GD8G. Both devices are classified as obsolete products from onsemi, indicating end-of-life status. Selection between these parts should be based on:

Packaging requirements: The CS5172GD8G is supplied in tube packaging, while the CS5172EDR8G is supplied in cut tape format. Choose based on assembly line compatibility and procurement volume.

Operating temperature range: The CS5172EDR8G extends the lower operating temperature limit to -40°C, compared to 0°C for the CS5172GD8G. Applications requiring operation below 0°C must use the CS5172EDR8G.

Compliance status: The CS5172EDR8G carries RoHS3 compliance certification, providing additional regulatory assurance for new designs. Both parts maintain REACH unaffected status and EAR99 export classification.

Inventory availability: Procurement decisions may be influenced by current stock levels and supplier lead times for each variant.

Frequently Asked Questions (FAQ)

Q: Are CS5172GD8G and CS5172EDR8G pin-for-pin compatible?

A: Yes. Both devices use the 8-SOIC package with identical pinout and electrical characteristics, enabling direct substitution at the board level.

Q: What is the difference between tube and cut tape packaging?

A: Tube packaging (CS5172GD8G) is suitable for manual handling and smaller production runs. Cut tape packaging (CS5172EDR8G) is optimized for automated pick-and-place assembly equipment. The choice depends on manufacturing process requirements.

Q: Can I use CS5172EDR8G in applications designed for CS5172GD8G?

A: Yes, provided your application does not require operation below 0°C. The CS5172EDR8G supports the extended temperature range of -40°C to 125°C, making it suitable for all temperature profiles covered by the CS5172GD8G.

Q: Why are both parts marked as obsolete?

A: Obsolete status indicates that onsemi has discontinued active production and support for these devices. Existing inventory may still be available through authorized distributors, but long-term availability is not guaranteed. Design teams should evaluate alternative current-generation switching regulator ICs for new projects.

Q: What compliance certifications apply to these parts?

A: Both devices maintain REACH unaffected status, indicating no conflict with REACH substance restrictions. The CS5172EDR8G additionally carries RoHS3 compliance. Both parts are classified under ECCN EAR99 for export purposes and HTSUS code 8542.39.0001 for tariff classification.

Q: Are there any electrical performance differences between these parts?

A: No. Both devices deliver identical electrical performance across all specified parameters, including input voltage range (2.7V to 30V), output current (1.5A), switching frequency (280kHz), and supported topologies (buck, boost, flyback, forward converter, SEPIC).