TPS54233DR Equivalent & Substitute Parts

Part Overview

The TPS54233DR is a buck switching regulator IC manufactured by Texas Instruments, designed for positive adjustable output applications. This device operates as a step-down converter with a single adjustable output ranging from 0.8V to 25V and delivers up to 2A of output current. The part is actively produced and widely stocked, with 35,400 units available in inventory. The TPS54233DR is part of the SWIFT™ and Eco-Mode™ series, offering efficient power management in a compact 8-SOIC surface mount package. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

TPS54233DR

Texas InstrumentsIn Stock: 35411TPS54233DR Datasheet

Current PartRFQ

AP64351SP-13

Diodes IncorporatedIn Stock: 100317AP64351SP-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS54233DR are identified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following allowed parameters:

• Package compatibility: 8-SOIC form factor with 0.154" (3.90mm) width
• Functional equivalence: Buck topology with adjustable positive output
• Electrical overlap: Input voltage range, output voltage range, and output current capacity
• Surface mount mounting type
• Active product status and RoHS3 compliance

The AP64351SP-13 from Diodes Incorporated qualifies as a substitute based on matching package geometry, buck converter topology, adjustable output configuration, and overlapping electrical specifications within the defined parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Both the TPS54233DR and AP64351SP-13 are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The TPS54233DR operates at 300kHz switching frequency with 2A output current capacity. The AP64351SP-13 provides higher output current (4.6A), wider input voltage range (3.8V to 40V), higher output voltage ceiling (40V), and includes a synchronous rectifier for improved efficiency. Both devices are housed in mechanically compatible 8-SOIC packages with 0.154" width. Selection between these parts depends on application-specific requirements for output current, input voltage range, and efficiency considerations. The AP64351SP-13 with exposed pad offers enhanced thermal performance suitable for higher power dissipation scenarios.

Frequently Asked Questions (FAQ)

Q: Can the AP64351SP-13 directly replace the TPS54233DR in existing designs?

A: The AP64351SP-13 is mechanically compatible in the 8-SOIC package and functionally equivalent as a buck converter with adjustable output. However, design validation is necessary to confirm that the higher switching frequency (570kHz vs. 300kHz), increased output current rating (4.6A vs. 2A), and presence of a synchronous rectifier do not introduce unintended effects in the specific application circuit.

Q: What are the key electrical differences between these parts?

A: The AP64351SP-13 supports a wider input voltage range (3.8V to 40V vs. 4.6V to 28V) and higher maximum output voltage (40V vs. 25V). The AP64351SP-13 includes a synchronous rectifier, whereas the TPS54233DR does not. The AP64351SP-13 operates at 570kHz compared to the TPS54233DR's 300kHz, affecting component selection for external filtering and power dissipation characteristics.

Q: Are there package differences between these parts?

A: Both parts use the 8-SOIC (0.154", 3.90mm Width) package. The AP64351SP-13 includes an exposed pad variant (8-SO-EP), providing additional thermal dissipation capability compared to the standard 8-SOIC package of the TPS54233DR.

Q: Do both parts meet current compliance standards?

A: Yes, both the TPS54233DR and AP64351SP-13 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What inventory considerations apply to these parts?

A: The TPS54233DR has 35,400 units in stock as tape and reel packaging. The AP64351SP-13 has 100,300 units available in cut tape and Digi-Reel® packaging, offering greater inventory availability for high-volume applications.