TPS7348QP Equivalent & Substitute Parts

Part Overview

The TPS7348QP is a linear voltage regulator IC from Texas Instruments designed for positive fixed output regulation at 4.85V with 500mA output current capability. This device features integrated enable and reset control functions, along with comprehensive protection including over-current, over-temperature, and reverse polarity protection. The TPS7348QP is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity. The TPS7348QDR provides functional equivalence in an alternative package configuration suitable for modern surface-mount assembly processes.

Substiute Parts

TPS7348QP

Texas InstrumentsIn Stock: 3283TPS7348QP Datasheet

Current PartRFQ

TPS7348QDR

Texas InstrumentsIn Stock: 871TPS7348QDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The TPS7348QDR qualifies as a direct functional substitute for the TPS7348QP based on electrical parameter equivalence. Both devices share identical electrical specifications across all critical parameters: fixed 4.85V output voltage, 500mA output current capacity, 10V maximum input voltage, 0.15V typical dropout voltage, 550 µA maximum supply current, and identical control and protection feature sets. The primary distinction between these parts is packaging format: the TPS7348QP uses through-hole 8-DIP mounting, while the TPS7348QDR uses surface-mount 8-SOIC configuration. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The substitution is valid when PCB layout and assembly process accommodate the surface-mount package change.

Parameter Comparison

Engineering Selection Recommendations

The TPS7348QDR is the active equivalent for the obsolete TPS7348QP. Both parts maintain identical electrical performance specifications and regulatory compliance status (ROHS3 compliant, REACH unaffected). Selection between these parts depends on assembly methodology: the TPS7348QP suits through-hole assembly processes, while the TPS7348QDR is appropriate for surface-mount technology (SMT) production environments. The TPS7348QDR's active product status ensures long-term availability and supply chain continuity compared to the obsolete TPS7348QP. PCB redesign to accommodate the 8-SOIC package footprint is required when transitioning from through-hole to surface-mount assembly.

Frequently Asked Questions (FAQ)

Q: Can the TPS7348QDR directly replace the TPS7348QP in existing designs?

A: Electrical substitution is complete; however, PCB layout modification is required. The TPS7348QP uses through-hole 8-DIP packaging (0.300" lead spacing), while the TPS7348QDR uses surface-mount 8-SOIC packaging (0.154" body width). Pin-to-pin electrical functionality is identical, but physical footprints differ significantly.

Q: What is the primary reason for substitution?

A: The TPS7348QP is classified as obsolete. The TPS7348QDR provides identical electrical performance with active product status, ensuring availability for new production and long-term supply chain stability.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts deliver identical output voltage (4.85V fixed), output current (500mA), input voltage rating (10V max), dropout voltage (0.15V typical), supply current (550 µA max), PSRR (53dB ~ 50dB at 120Hz), and protection features (over-current, over-temperature, reverse polarity).

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the TPS7348QP and TPS7348QDR are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity level) ratings.

Q: What assembly process considerations apply to each part?

A: The TPS7348QP requires through-hole insertion and wave or selective soldering. The TPS7348QDR requires surface-mount assembly using reflow soldering processes. Manufacturing process selection determines which part is appropriate for production.