TPS78928DBVTG4 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
The TPS78928DBVTG4 from Texas Instruments is a fixed 2.8 V, 100 mA low-dropout linear regulator with a 245 mV maximum dropout voltage in a compact 5-pin SOT-23 package. It accepts input voltages from 3.1 V to 10 V and achieves excellent line regulation of 0.017%, making it ideal for noise-sensitive analog and RF circuits. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- TPS78928DBVTG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 2.8 V output with 100 mA current capability and ultra-low dropout of 245 mV max for efficient battery-powered designs
- Excellent line regulation of 0.017% ensuring stable 2.8 V supply across input voltage variations from 3.1 V to 10 V
- Compact 5-pin SOT-23 package enabling minimal PCB footprint for space-constrained portable and IoT applications
Applications
The TPS78928DBVTG4 is used to supply a stable 2.8 V rail to noise-sensitive RF front ends, wireless sensor nodes, and analog signal chains where the ultra-low 245 mV dropout allows operation from lithium-ion cells down to near their discharge point. It is well suited for powering camera modules, MEMS sensors, and Bluetooth/Wi-Fi transceivers in wearable and IoT devices. The device also serves as a post-regulator in multi-rail power trees where a clean 2.8 V must be derived from a higher switching regulator output.
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 TPS78928DBVTG4:
Frequently Asked Questions
What is the output voltage and maximum current of TPS78928DBVTG4, and how does the dropout voltage affect battery life?
The TPS78928DBVTG4 provides a fixed 2.8 V output at up to 100 mA with a maximum dropout of 245 mV, allowing the input supply to drop to 3.045 V before regulation is lost, which extends usable battery life in portable designs powered by single-cell Li-ion or 3x AA battery packs.
For a Bluetooth Low Energy sensor module requiring a stable 2.8 V rail, how does the TPS78928DBVTG4 minimize RF noise?
The TPS78928DBVTG4 achieves 0.017% line regulation and inherently low output noise characteristic of linear regulators, making it superior to switching regulators for powering BLE RF transceivers and analog front ends where switching noise above 1 MHz would degrade receiver sensitivity.
What is the input voltage range of TPS78928DBVTG4 and which supply topologies does it support?
The TPS78928DBVTG4 accepts input voltages from 3.129 V to 10 V (absolute max 13.5 V), making it compatible with 3.3 V, 5 V, and higher switching regulator outputs as a low-noise post-regulator for generating a clean 2.8 V rail in mixed-signal systems.
How compact is the TPS78928DBVTG4 SOT-23 package compared to alternatives for space-constrained IoT designs?
The 5-pin SOT-23 package occupies roughly 3 mm x 1.75 mm of PCB area, making TPS78928DBVTG4 one of the smallest 100 mA LDO solutions available, well suited for wearable devices, coin-cell modules, and compact IoT nodes where every square millimeter of board space matters.
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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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