TPS54335DDA Equivalent & Substitute Parts

Part Overview

The TPS54335DDA is a buck switching regulator IC from Texas Instruments' SWIFT™ series, designed for positive adjustable step-down voltage regulation with 3A output current capability. This component operates across a 4.5V to 28V input range and delivers adjustable output from 0.8V to 25V, making it suitable for diverse power management applications requiring compact surface-mount solutions.

The TPS54335DDA is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

TPS54335DDA

Texas InstrumentsIn Stock: 2356TPS54335DDA Datasheet

Current PartRFQ

TPS54335ADDAR

Texas InstrumentsIn Stock: 43388TPS54335ADDAR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS54335DDA is determined by strict alignment across the following critical parameters:

• Topology & Function: Buck (step-down) switching regulator with positive adjustable output
• Electrical Specifications: Input voltage range 4.5V to 28V, output adjustable from 0.8V minimum, output current 3A, switching frequency 50kHz to 1.5MHz
• Synchronous Rectification: Integrated synchronous rectifier capability
• Package Compatibility: 8-PowerSOIC form factor (0.154", 3.90mm width) for direct PCB footprint compatibility
• Mounting & Environmental: Surface mount technology, operating temperature range, moisture sensitivity level, and compliance certifications

The TPS54335ADDAR qualifies as a direct substitute based on identical electrical performance parameters, matching package geometry, and equivalent functional specifications across all critical selection criteria.

Parameter Comparison

Engineering Selection Recommendations

The TPS54335ADDAR is the direct substitute for the obsolete TPS54335DDA. Both components share identical base product architecture, electrical performance specifications, and physical packaging. The TPS54335ADDAR maintains active product status with Texas Instruments, ensuring ongoing availability and supply chain support.

Key selection considerations:

• Maximum Output Voltage: The TPS54335ADDAR specifies 24V maximum output versus 25V for the TPS54335DDA. Applications requiring output voltages above 24V require design verification.
• Operating Temperature Range: The TPS54335ADDAR operates to 150°C junction temperature versus 85°C ambient for the TPS54335DDA, providing extended thermal performance capability.
• Compliance & Certifications: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity ratings, ensuring regulatory and environmental compatibility.
• Packaging & Mounting: Identical 8-PowerSOIC package geometry enables direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the TPS54335ADDAR directly replace the TPS54335DDA on existing PCBs?

A: Yes. Both components utilize the identical 8-PowerSOIC package with matching pinout and footprint geometry. No PCB layout modifications are required for substitution.

Q: What is the significance of the product status difference (Obsolete vs. Active)?

A: The TPS54335DDA is obsolete and no longer manufactured by Texas Instruments. The TPS54335ADDAR is actively produced, ensuring reliable long-term availability, consistent quality, and ongoing technical support for new designs and production runs.

Q: Are there electrical performance differences between these parts?

A: Both parts deliver identical switching regulator performance across input voltage range (4.5V to 28V), output current (3A), switching frequency (50kHz to 1.5MHz), and synchronous rectification capability. The maximum output voltage specification differs by 1V (25V vs. 24V), which is application-dependent.

Q: Do both parts meet the same compliance and environmental standards?

A: Yes. Both the TPS54335DDA and TPS54335ADDAR are ROHS3 compliant, REACH unaffected, and carry identical MSL 2 (1 Year) moisture sensitivity ratings.

Q: What packaging options are available for the TPS54335ADDAR?

A: The TPS54335ADDAR is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both manual assembly and automated production workflows.