TPS72515DCQ Equivalent & Substitute Parts

Part Overview

The TPS72515DCQ is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.5V output applications with 1A current capacity. This Surface Mount device in SOT-223-6 packaging is classified as Last Time Buy, indicating end-of-life status. Finding equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications requiring this power management solution.

Substiute Parts

TPS72515DCQ

Texas InstrumentsIn Stock: 3248TPS72515DCQ Datasheet

Current PartRFQ

TPS74601PDRVR

Texas InstrumentsIn Stock: 44730TPS74601PDRVR Datasheet

MFR RecommendedRFQ

TPS72615DCQ

Texas InstrumentsIn Stock: 1956TPS72615DCQ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS72515DCQ is determined by the following critical parameters:

Parametric Equivalents maintain identical electrical specifications: positive fixed output configuration, 1.5V output voltage, 1A output current, 6V maximum input voltage, 0.32V maximum dropout voltage at 1A, and SOT-223-6 packaging. These parts are direct functional replacements with no design modifications required.

Functional Alternatives provide equivalent power management capability but differ in one or more parameters. The TPS74601PDRVR offers adjustable output voltage (0.55V to 5.5V range), allowing 1.5V configuration through external resistor networks, with improved quiescent current (35 µA vs. 225 µA) and lower moisture sensitivity. This part requires circuit design changes to set the output voltage but provides superior performance characteristics and Active product status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: TPS72615DCQ is the parametric equivalent, maintaining identical output voltage, current capacity, dropout voltage, and SOT-223-6 packaging. Both parts share Last Time Buy status. Selection between TPS72515DCQ and TPS72615DCQ depends on quiescent current requirements; TPS72615DCQ offers lower Iq (120 µA vs. 225 µA) with identical fixed output specifications.

For Long-Term Supply Assurance: TPS74601PDRVR is the only Active product among the three options, ensuring continued availability and manufacturing support. This part requires circuit modification to configure 1.5V output through external resistor divider networks but provides superior quiescent current performance (35 µA), lower moisture sensitivity (MSL 1 vs. MSL 2), and unlimited shelf life. The increased dropout voltage (0.896V vs. 0.32V) must be evaluated against specific application power budget constraints.

Compliance Considerations: All three parts are ROHS3 compliant, REACH unaffected, and classified as EAR99. Selection should prioritize Active product status for new designs and long-term production continuity.

Frequently Asked Questions (FAQ)

Q: Can TPS72615DCQ directly replace TPS72515DCQ without circuit modifications?

A: Yes. TPS72615DCQ is a parametric equivalent with identical output voltage (1.5V), current rating (1A), dropout voltage (0.32V @ 1A), and SOT-223-6 packaging. No design changes are required. The primary difference is lower quiescent current in TPS72615DCQ (120 µA vs. 225 µA).

Q: What design changes are required to use TPS74601PDRVR as a substitute?

A: TPS74601PDRVR is an adjustable regulator requiring external resistor networks to set output voltage to 1.5V. The feedback network must be designed according to the device datasheet. Additionally, the package changes from SOT-223-6 to 6-WSON (2x2), requiring PCB layout modifications. The higher dropout voltage (0.896V) must be verified against application input voltage margins.

Q: Why is TPS74601PDRVR recommended despite higher dropout voltage?

A: TPS74601PDRVR is the only Active product, ensuring long-term supply availability. It offers significantly lower quiescent current (35 µA), superior moisture sensitivity rating (MSL 1 with unlimited shelf life vs. MSL 2 with 1-year limit), and continued manufacturing support. These advantages justify the design effort for applications where supply continuity is critical.

Q: Are all three parts suitable for the same operating temperature range?

A: Yes. All three parts operate across -40°C to 125°C, meeting identical thermal specifications.

Q: What is the impact of package change from SOT-223-6 to 6-WSON?

A: Package change requires PCB layout redesign, including trace routing, thermal management considerations, and component placement. The 6-WSON (2x2) package is smaller than SOT-223-6, potentially reducing board space but requiring updated assembly and test procedures.