TPS731125DBVTG4 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
The TPS731125DBVTG4 is a fixed 2.5 V, 150 mA positive LDO linear regulator from Texas Instruments with an ultra-low 30 mV typical dropout voltage and 1.7 V to 5.5 V input range in a 5-pin SOT-23 package. It delivers 0.01% maximum line regulation for noise-sensitive supply rails. Available RoHS-compliant in tape-and-reel from global authorized distributors.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- TPS731125DBVTG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 30 mV typical dropout voltage at 150 mA output enables efficient regulation from near-threshold input supplies such as single-cell Li-ion batteries down to 1.7 V
- Fixed 2.5 V output with 0.01% maximum line regulation provides stable analog reference-quality supply rails for precision ADCs, DACs, and RF circuits
- Compact 5-pin SOT-23 package with 1.7 V to 5.5 V input range minimizes PCB footprint in battery-powered IoT nodes and portable medical devices
Applications
The TPS731125DBVTG4 is used to supply precision 2.5 V power rails for high-resolution ADCs, reference voltage circuits, and low-noise RF front-end modules in portable instrumentation and IoT sensor nodes where the 30 mV dropout allows operation from near-depleted single-cell Li-ion batteries. Its 0.01% line regulation makes it well-suited for analog signal conditioning chains in medical wearables and industrial sensors that require stable supply voltage independent of input fluctuations. The 5-pin SOT-23 form factor also fits wireless communication modules, GPS receivers, and MEMS sensor supply rails where board space is at a premium.
Specifications
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.1V |
| Dropout Voltage1-Nom | 0.03V |
| Input Voltage Absolute-Max | 6V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 1.7V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.01% |
| Load Regulation-Max | 0.003725% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.15A |
| Output Voltage1-Max | 1.2625V |
| Output Voltage1-Min | 1.2375V |
| Output Voltage1-Nom | 1.25V |
| 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 | BICMOS |
| 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 | 1% |
| 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 TPS731125DBVTG4:
Frequently Asked Questions
What is the dropout voltage of the TPS731125DBVTG4 and how does it extend battery runtime in portable designs?
The TPS731125DBVTG4 has a typical dropout voltage of only 30 mV at 150 mA output current, with a maximum of 100 mV under worst-case conditions. This ultra-low dropout allows the regulator to maintain a regulated 2.5 V output from input voltages as low as 2.53 V, meaning a Li-ion battery can discharge much closer to its cutoff voltage before the output drops out, directly extending usable runtime in portable IoT nodes, wearables, and field instruments.
Which precision analog subsystems benefit from the TPS731125DBVTG4's 0.01% line regulation specification?
High-resolution ADCs (16-bit and above), precision voltage references, and low-noise operational amplifier supply rails benefit most from the 0.01% maximum line regulation. This specification means a 1 V change on the input rail causes less than 0.25 mV variation on the 2.5 V output, preventing input supply noise from coupling into analog signal chains and degrading SNR or gain accuracy in instrumentation amplifiers, strain-gauge bridges, and RF envelope detectors.
How does the TPS731125DBVTG4 compare to a standard 100 mV dropout LDO for powering a 2.5 V MEMS sensor from a 2.8 V coin cell?
A standard LDO with 100 mV dropout would drop out and fail to regulate at 2.8 V input for a 2.5 V output, since the headroom is exactly at the dropout limit under load. The TPS731125DBVTG4's 30 mV typical dropout keeps the output in regulation with 270 mV of margin from a 2.8 V coin cell, providing stable 2.5 V supply to the MEMS sensor across the full discharge curve from 3.0 V fresh down to approximately 2.53 V depleted.
What input voltage range and package must a hardware designer plan for when integrating the TPS731125DBVTG4 into a 3.3 V system?
The TPS731125DBVTG4 accepts input voltages from 1.7 V minimum to 5.5 V maximum, with an absolute maximum of 6 V. In a 3.3 V system this provides 800 mV of dropout headroom for a 2.5 V output rail, ample margin for bulk capacitor droop during load transients. The 5-pin SOT-23 package occupies roughly 9 mm² of PCB footprint and is supplied in tape-and-reel (T suffix) for SMT assembly compatibility.
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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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