TPS7348QPE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
TPS7348QPE4 is a PMOS ultra-low-dropout linear voltage regulator from Texas Instruments, featuring a 150 mV typical dropout voltage with 5.2 V to 10 V input range. Housed in an 8-pin DIP package with fixed output and Pb-free compliance. From $1.80 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TPS7348QPE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 150 mV typical dropout voltage using PMOS pass element for maximum efficiency at high load currents
- Fixed output voltage with 5.2 V to 10 V input range covering 5 V and 9 V battery and wall-adapter supply systems
- 8-pin DIP package enabling easy prototyping and field replacement in industrial and laboratory equipment
Applications
TPS7348QPE4 is used in microcontroller supply rails, analog sensor front-ends, and laboratory instruments that operate from 5 V or 9 V adapters and require a stable regulated output with minimal headroom loss. Its PMOS architecture and 150 mV dropout make it well-suited for high-current output rails in 5 V bus systems where conventional NPN-based LDOs would saturate.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.25V |
| Dropout Voltage1-Nom | 0.15V |
| Input Voltage Absolute-Max | 11V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 5.2V |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.037% |
| Load Regulation-Max | 0.13% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.5A |
| Output Voltage1-Max | 4.95V |
| Output Voltage1-Min | 4.75V |
| Output Voltage1-Nom | 4.85V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | NO |
| Technology | BICMOS |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 2% |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS7348QPE4:
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Frequently Asked Questions
Why does TPS7348QPE4 use a PMOS pass element, and how does that reduce dropout voltage compared to NPN-based LDOs?
TPS7348QPE4 uses a PMOS transistor as its pass element, which only needs a gate voltage below the input rail to conduct, eliminating the 0.6 V base-emitter saturation requirement of NPN bipolar pass devices. The result is a 150 mV typical dropout versus 600 mV or more in bipolar LDOs, allowing a 5 V output from a 5.15 V minimum input—a 450 mV headroom improvement that prevents brownout in near-depleted battery scenarios.
What is the maximum input voltage for TPS7348QPE4, and does it suit 9 V alkaline battery supplies?
TPS7348QPE4 accepts up to 10 V continuous input with an absolute maximum of 11 V. A fresh 9 V alkaline battery delivers 9.5 V, comfortably within the 10 V rating, while the 5.2 V minimum input accommodates the end-of-life discharge of a 9 V battery at approximately 5.4 V. This full voltage range across a 9 V battery lifecycle makes TPS7348QPE4 suitable for handheld instruments with a single alkaline cell.
How does the 250 mV maximum dropout of TPS7348QPE4 affect efficiency in a 5 V supply design?
At full load from a 5.5 V input to a 5.0 V output, the power loss is 0.25 V × load current. For a 100 mA load, that is only 25 mW of dissipation, giving a conversion efficiency above 90%. This is approximately 40 percentage points better than a 600 mV dropout bipolar LDO under the same conditions, reducing both heat generation and battery drain in portable 5 V-powered test equipment.
For lab prototyping, what advantages does the DIP-8 package of TPS7348QPE4 offer over SMT alternatives?
The 8-pin DIP package with 2.54 mm pin pitch plugs directly into standard breadboards and wirewrap sockets without soldering, enabling rapid circuit evaluation in under 5 minutes. The 9.27 mm body width and through-hole leads also provide a sturdy mechanical mount that tolerates repeated probe contact and manual rework—important in university labs and R&D environments where SMT rework stations are shared or unavailable.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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