TPS78928DBVRG4 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
The TPS78928DBVRG4 is a fixed 2.8 V, 100 mA low-dropout linear regulator from Texas Instruments. It operates from 3.129 V to 10 V input and achieves a maximum dropout voltage of 245 mV at full load. Packaged in a 5-pin SOT-23, it suits space-constrained portable and wireless applications.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- TPS78928DBVRG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 2.8 V output in a compact 5-pin SOT-23 package
- Low dropout voltage of 245 mV maximum at 100 mA load
- Wide input range from 3.129 V to 10 V for versatile supply compatibility
- Excellent line regulation of 0.0173% for stable output under supply variation
- AEC-Q100 qualified variant available for automotive-grade applications
Applications
The TPS78928DBVRG4 is well suited for powering RF transceivers, Bluetooth modules, and sensor front-ends that require a clean 2.8 V supply in battery-operated devices. Its low quiescent current and minimal dropout make it ideal for wearables, IoT nodes, and handheld instruments where extending battery runtime is critical. The small SOT-23 footprint allows integration into dense PCB layouts alongside other power management components.
Specifications
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.245V |
| Dropout Voltage1-Nom | 0.329V |
| Input Voltage Absolute-Max | 13.5V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 3.129V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.0173% |
| Load Regulation-Max | 0.012% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.1A |
| Output Voltage1-Max | 2.884V |
| Output Voltage1-Min | 2.716V |
| Output Voltage1-Nom | 2.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | PMOS |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 3% |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS78928DBVRG4:
Frequently Asked Questions
What is the maximum output current the TPS78928DBVRG4 can deliver, and what dropout voltage should be budgeted at that load?
The TPS78928DBVRG4 delivers a maximum continuous output current of 100 mA. At this full load, the dropout voltage reaches up to 245 mV, which means the input supply must remain at least 3.045 V to maintain the regulated 2.8 V output without dropout.
For a 3.3 V single-cell Li-ion powered design, does the TPS78928DBVRG4 remain regulated throughout the battery discharge cycle?
A single-cell Li-ion battery discharges from about 4.2 V fully charged down to approximately 3.0 V at cutoff. Since the TPS78928DBVRG4 requires a minimum input of 3.129 V, it will maintain its 2.8 V output for most of the discharge range but may drop out near the end of battery life, so system design should account for that 129 mV margin.
How does the 5-pin SOT-23 package of the TPS78928DBVRG4 compare in board area to larger LDO packages, and why does it matter for wearables?
The 5-pin SOT-23 package occupies roughly 3 mm x 1.75 mm of PCB area, significantly smaller than SOT-89 or TO-252 alternatives that may use 4 mm x 4 mm or more. For wearable devices and hearing-aid modules with sub-10 cm² boards, saving several square millimeters per regulator directly enables tighter integration of battery, antenna, and sensor components.
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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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