TPS62320YZDT Equivalent & Substitute Parts

Part Overview

The TPS62320YZDT is a buck switching regulator IC from Texas Instruments designed for positive adjustable output applications. This device operates as a step-down converter with a single adjustable output, delivering up to 500mA at output voltages ranging from 0.6V to 5.4V. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

TPS62320YZDT

Texas InstrumentsIn Stock: 2307TPS62320YZDT Datasheet

Current PartRFQ

TPS62801YKAT

Texas InstrumentsIn Stock: 3488TPS62801YKAT Datasheet

MFR RecommendedRFQ

TPS62821DLCT

Texas InstrumentsIn Stock: 5194TPS62821DLCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS62320YZDT is determined by the following critical parameters:

• Topology: Buck (step-down) switching regulator
• Output Configuration: Positive adjustable output
• Input Voltage Range: Minimum 2.7V, maximum 6V
• Output Voltage Range: Minimum 0.6V, maximum 5.4V
• Output Current Capability: 500mA minimum requirement
• Synchronous Rectification: Required
• Compliance: ROHS3 compliant, REACH unaffected

The identified substitute parts maintain functional equivalence within these parameters while offering active product status and improved thermal operating ranges.

Parameter Comparison

Engineering Selection Recommendations

TPS62801YKAT is suitable for applications where output voltage requirements are limited to 0.8V to 1.55V and input voltage operates between 1.8V and 5.5V. This part offers active product status and extended operating temperature range (-40°C to 125°C). The 6-DSBGA package differs from the original 8-DSBGA, requiring PCB layout modification. Output current capability of 1A exceeds the original 500mA specification.

TPS62821DLCT provides direct functional equivalence for adjustable output applications spanning 0.6V to 4V with input voltage range 2.4V to 5.5V. This part maintains active product status and extended thermal performance (-40°C to 125°C). The 8-VFDFN package represents a different form factor from the original 8-UFBGA, necessitating PCB redesign. Output current of 1A provides increased capacity over the original 500mA rating.

Both substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity level, and REACH unaffected status. Selection between substitutes depends on specific output voltage requirements and package compatibility constraints within the target application.

Frequently Asked Questions (FAQ)

Q: Can TPS62801YKAT directly replace TPS62320YZDT without circuit modification?

A: No. While both are buck regulators with synchronous rectification, the TPS62801YKAT has a narrower output voltage range (0.8V to 1.55V versus 0.6V to 5.4V). Package differences (6-DSBGA versus 8-UFBGA) require PCB layout changes. Circuit redesign is necessary if the application requires output voltages below 0.8V or above 1.55V.

Q: What are the key differences between TPS62821DLCT and TPS62320YZDT?

A: Both devices support adjustable output from 0.6V, matching the original part's minimum output voltage. The TPS62821DLCT uses an 8-VFDFN package instead of 8-UFBGA, requiring PCB redesign. Output current increases from 500mA to 1A. Operating temperature range extends from 85°C to 125°C maximum. Switching frequency differs (2.2MHz versus 3MHz).

Q: Are package changes between substitutes and the original part critical?

A: Yes. The TPS62320YZDT uses 8-UFBGA packaging, while TPS62801YKAT uses 6-DSBGA and TPS62821DLCT uses 8-VFDFN. Different package geometries, pin counts, and thermal characteristics require complete PCB layout redesign. Thermal performance, current distribution, and component placement strategies differ significantly between packages.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. TPS62801YKAT and TPS62821DLCT both maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, matching the original TPS62320YZDT specifications.

Q: Which substitute is better for high-temperature applications?

A: Both TPS62801YKAT and TPS62821DLCT support operating temperatures to 125°C (junction temperature), compared to the original part's 85°C maximum. Selection depends on output voltage requirements: TPS62801YKAT for 0.8V to 1.55V outputs, TPS62821DLCT for 0.6V to 4V outputs.