TPS54352PWPR Equivalent & Substitute Parts

Part Overview

The TPS54352PWPR is a buck switching regulator IC from Texas Instruments' SWIFT™ series, designed for step-down voltage conversion with a fixed 1.2V output at 3A maximum current. This device operates across a 4.5V to 20V input range and features synchronous rectification for improved efficiency. The part is currently in Last Time Buy status, making identification of suitable alternatives essential for ongoing design support and procurement planning.

Substiute Parts

TPS54352PWPR

Texas InstrumentsIn Stock: 3293TPS54352PWPR Datasheet

Current PartRFQ

TPS62933DRLR

Texas InstrumentsIn Stock: 3071TPS62933DRLR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The TPS62933DRLR qualifies as a manufacturer-recommended substitute based on the following alignment criteria:

Matching Parameters:

• Manufacturer: Texas Instruments (same source)
• Topology: Buck switching regulator with synchronous rectification
• Output Current Rating: 3A (identical)
• Output Configuration: Positive
• Number of Outputs: 1
• RoHS Compliance: ROHS3 Compliant
• REACH Status: REACH Unaffected
• Mounting Type: Surface Mount

Substitution Basis: The TPS62933DRLR maintains functional equivalence in buck regulation topology and current handling capacity. Both devices employ synchronous rectification and operate within compatible input voltage ranges that overlap the primary application window. The substitute's adjustable output (0.8V to 22V) encompasses the fixed 1.2V output of the TPS54352PWPR, allowing configuration flexibility for the target voltage level.

Parameter Comparison

Engineering Selection Recommendations

The TPS62933DRLR is designated as the manufacturer-recommended substitute for the TPS54352PWPR. Selection of this alternative is supported by:

• Product Status Alignment: The TPS62933DRLR maintains Active status, ensuring continued availability and manufacturing support beyond the Last Time Buy window of the primary part.
• Compliance Continuity: Both devices maintain ROHS3 compliance and REACH Unaffected status, preserving regulatory requirements for the application.
• Functional Equivalence: Identical 3A output current rating and synchronous buck topology ensure drop-in compatibility for power delivery requirements.
• Packaging Consideration: The SOT-583 package of the substitute differs from the 16-PowerTSSOP of the primary part, requiring PCB layout modification.
• Thermal Performance: The TPS62933DRLR supports extended operating temperature range (-40°C to 150°C junction temperature) compared to the primary part's -40°C to 85°C ambient specification.

Frequently Asked Questions (FAQ)

Q: Can the TPS62933DRLR directly replace the TPS54352PWPR without circuit modifications?

A: The TPS62933DRLR requires output voltage configuration through external resistor dividers to achieve the 1.2V fixed output of the primary part. The adjustable output topology necessitates additional passive components not present in the fixed-output TPS54352PWPR design. PCB layout changes are required due to package differences.

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

A: The primary electrical differences are output type (fixed versus adjustable), input voltage range (4.5V–20V versus 3.8V–30V), switching frequency range (250kHz/500kHz versus 200kHz–2.2MHz), and operating temperature specification (ambient versus junction). Output current and synchronous rectification topology remain identical.

Q: Is the package change from 16-PowerTSSOP to SOT-583 significant?

A: Yes. The package change requires PCB redesign, including new footprint layout, trace routing, and thermal management considerations. The SOT-583 package has different pin configuration and thermal characteristics than the 16-PowerTSSOP.

Q: Does the TPS62933DRLR support the same input voltage range?

A: The TPS62933DRLR supports a wider input range (3.8V–30V) that encompasses the TPS54352PWPR specification (4.5V–20V). Applications operating within the original 4.5V–20V window remain compatible.

Q: What is the impact of the adjustable output on design complexity?

A: The adjustable output requires external resistor dividers to set the 1.2V reference voltage. This adds component count and design complexity compared to the fixed-output primary part, but provides flexibility for future voltage adjustments if needed.

Q: Are there moisture sensitivity differences between these parts?

A: Yes. The TPS54352PWPR has MSL 2 rating (1 Year), while the TPS62933DRLR has MSL 1 rating (Unlimited). The substitute offers superior moisture tolerance for storage and handling.