AP65452SP-13 Equivalent & Substitute Parts

Part Overview

The AP65452SP-13 is a buck switching regulator IC manufactured by Diodes Incorporated, designed for positive adjustable output voltage regulation with 4A output current capability. This component operates across a 4.5V to 18V input range and delivers adjustable output from 0.76V to 6V, making it suitable for various power management applications requiring step-down voltage conversion with synchronous rectification.

The AP65452SP-13 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

AP65452SP-13

Diodes IncorporatedIn Stock: 879AP65452SP-13 Datasheet

Current PartRFQ

TPS54228DR

Texas InstrumentsIn Stock: 2882TPS54228DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP65452SP-13 is determined by alignment of the following critical parameters:

Electrical Compatibility Requirements:

• Input voltage range: 4.5V minimum to 18V maximum
• Output voltage adjustability: 0.76V minimum to at least 6V maximum
• Topology: Buck (step-down) switching regulator
• Output configuration: Positive adjustable
• Synchronous rectification capability
• Operating temperature range: -40°C to 85°C

Mechanical Compatibility Requirements:

• Package type: 8-SOIC with exposed pad
• Package dimensions: 0.154" width, 3.90mm width
• Mounting type: Surface mount

Regulatory & Compliance Requirements:

• RoHS3 compliance
• REACH unaffected status
• ECCN: EAR99

The TPS54228DR from Texas Instruments meets the core electrical and mechanical substitution criteria, though with a reduced output current rating of 2A compared to the original 4A specification.

Parameter Comparison

Engineering Selection Recommendations

The TPS54228DR is an active product from Texas Instruments and represents a direct functional substitute for the obsolete AP65452SP-13 across the specified electrical and mechanical parameters. Both devices maintain identical input voltage ranges, adjustable output voltage minimums, package form factors, and operating temperature specifications. Both are ROHS3 compliant and REACH unaffected.

The primary design consideration is the output current rating differential: the TPS54228DR delivers 2A maximum output current versus the AP65452SP-13's 4A rating. Applications requiring the full 4A output capacity of the original part will require alternative solutions or circuit redesign to accommodate the reduced current capability of the substitute.

The TPS54228DR's active product status ensures ongoing availability, technical support, and supply chain continuity compared to the obsolete status of the AP65452SP-13.

Frequently Asked Questions (FAQ)

Q: Can the TPS54228DR directly replace the AP65452SP-13 in all applications?

A: The TPS54228DR is mechanically and electrically compatible for package and pinout considerations. However, applications drawing more than 2A output current cannot use this substitute without circuit modification. Verify your application's maximum output current requirement against the 2A limit of the TPS54228DR.

Q: Are there package compatibility concerns between these parts?

A: Both parts use 8-SOIC packages with 0.154" width and 3.90mm dimensions. The AP65452SP-13 includes an exposed pad; the TPS54228DR specification provided does not explicitly reference an exposed pad. Confirm PCB layout compatibility, particularly for thermal management and grounding connections.

Q: What is the significance of the switching frequency difference?

A: The AP65452SP-13 operates at 650kHz while the TPS54228DR operates at 700kHz. This 50kHz difference may affect output filter component selection and EMI characteristics. Review your output filter design to ensure compatibility with the 700kHz switching frequency.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both the AP65452SP-13 and TPS54228DR are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic components.

Q: Why is the AP65452SP-13 obsolete?

A: The product status reflects Diodes Incorporated's discontinuation of this part. The TPS54228DR from Texas Instruments provides functional continuity for new designs and ongoing production support.