CS5172EDR8 Equivalent & Substitute Parts

Part Overview

The CS5172EDR8 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 part is classified as obsolete, making identification of compatible substitutes essential for ongoing design support and procurement planning.

Substiute Parts

CS5172EDR8

onsemiIn Stock: 25303CS5172EDR8 Datasheet

Current PartRFQ

CS5172EDR8G

onsemiIn Stock: 2495CS5172EDR8G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CS5172EDR8 is determined by strict equivalence across the following critical parameters:

• Identical base product number (CS5172)
• Matching package type (8-SOIC with 0.154" / 3.90mm width)
• Identical electrical specifications (input voltage range 2.7V–30V, output range -2.45V to -40V, 1.5A switch current)
• Matching topology support (Buck, Boost, Flyback, Forward Converter, SEPIC)
• Identical output configuration (Positive or Negative adjustable)
• Matching switching frequency (280kHz)
• Identical operating temperature range (-40°C to 125°C)

The CS5172EDR8G qualifies as a direct substitute based on full alignment with these parameters. Differences are limited to packaging format (Cut Tape vs. standard reel) and RoHS compliance status, which do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The CS5172EDR8G is a direct functional equivalent to the CS5172EDR8. Both parts share identical electrical and mechanical specifications, including input/output voltage ranges, current ratings, switching frequency, and thermal operating limits. The primary distinction is RoHS compliance status: the CS5172EDR8G meets ROHS3 requirements, while the original CS5172EDR8 does not.

For new designs or procurement requiring RoHS compliance, the CS5172EDR8G is the appropriate selection. For legacy systems or applications without RoHS mandates, either part is electrically interchangeable. Packaging format differences (Cut Tape vs. standard reel) are procurement considerations only and do not affect circuit performance or PCB assembly compatibility.

Frequently Asked Questions (FAQ)

Q: Can CS5172EDR8G replace CS5172EDR8 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The CS5172EDR8G can be substituted directly without circuit modifications or re-qualification.

Q: What is the difference between CS5172EDR8 and CS5172EDR8G?

A: The parts are functionally equivalent. The CS5172EDR8G is ROHS3 compliant, while the CS5172EDR8 is not. Packaging format may differ (Cut Tape vs. reel), but this does not affect electrical performance or PCB assembly.

Q: Are there any pin compatibility concerns?

A: No. Both parts use the identical 8-SOIC package with 0.154" (3.90mm) width. Pin count, spacing, and functionality are identical.

Q: Why is the CS5172EDR8 marked as obsolete?

A: Obsolete status indicates the part is no longer in active production. The CS5172EDR8G represents the current equivalent offering from onsemi and should be used for new designs and ongoing procurement.

Q: Does RoHS compliance affect circuit performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical or thermal performance. Both parts operate identically within specified parameters.

Q: Can I use these parts interchangeably in high-temperature applications?

A: Yes. Both parts share the identical operating temperature range of -40°C to 125°C (TJ). Thermal performance is equivalent.