TPS731125DBVR Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
TPS731125DBVR is a low-dropout linear regulator from Texas Instruments providing a fixed 1.25V output with ultra-low dropout of 30 mV typical. It operates from 1.7V to 5.5V input and is packaged in a compact SOT-23-5 for space-constrained designs.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- TPS731125DBVR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6262(MOQ 238)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low dropout voltage of 30 mV typical at rated load, ideal for battery-powered applications
- Fixed 1.25V output with input voltage range of 1.7V to 5.5V enabling flexible supply rail support
- Compact SOT-23-5 package (5 pins) minimizes PCB footprint in space-constrained portable electronics
- High PSRR and low quiescent current supporting stable operation in noise-sensitive analog circuits
Applications
The TPS731125DBVR is designed for portable consumer electronics, wearables, and IoT devices where tight output voltage regulation from a low input supply is critical. Its ultra-low 30 mV dropout voltage makes it ideal for single-cell Li-ion battery systems where maximum energy extraction is needed. It is also well-suited for post-regulation of switch-mode power supplies in RF modules and precision analog front-ends requiring a clean 1.25V reference rail.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| 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 | 0.00046875% |
| 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, 7 INCH |
| 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 (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 1% |
| ## TPS731125DBVR Alternates Showing results | Image |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS731125DBVR:
Frequently Asked Questions
How low is the dropout voltage of TPS731125DBVR and why does it matter for battery-powered designs?
The TPS731125DBVR has a typical dropout voltage of only 30 mV at full load, with a maximum of 100 mV. This extremely low dropout allows the device to maintain a regulated 1.25V output even when the input supply is nearly depleted, extending useful battery life in Li-ion and coin-cell powered products significantly beyond standard LDO alternatives.
What input voltage range does the TPS731125DBVR support and which power supply topologies can drive it?
The TPS731125DBVR accepts input voltages from 1.7V to 5.5V, with an absolute maximum of 6V. This wide input range allows it to be driven directly from single-cell Li-ion batteries, 3.3V or 5V regulated rails, or the output of a boost converter, making it highly versatile for multi-topology system power architectures.
In what scenarios would TPS731125DBVR be preferred over a higher-voltage fixed LDO like TPS73133?
TPS731125DBVR is preferred when the system requires a 1.25V rail that would not be achievable with a higher-output LDO like TPS73133 (3.3V output) without additional circuitry. At only 5 pins in SOT-23, it occupies under 3 mm² of board area and its 30 mV typical dropout makes it the right choice when input headroom is limited to under 200 mV above the regulated output.
Can TPS731125DBVR power a precision ADC reference circuit, and what output accuracy can be expected?
Yes, the TPS731125DBVR can supply a stable 1.25V reference rail for precision ADC circuits. Its fixed output has tight accuracy specifications and the device features good power supply rejection ratio (PSRR) across audio frequencies, typically better than 40 dB at 1 kHz, helping to isolate the ADC reference from upstream supply noise. The SOT-23-5 package keeps parasitic inductance and layout-induced noise to a minimum.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 238+ | $1.2600 | $299.88 |
| 250+ | $0.9532 | $238.30 |
| 500+ | $0.9170 | $458.52 |
| 1000+ | $0.8383 | $838.30 |
| 10000+ | $0.7474 | $7474.00 |
| 100000+ | $0.6262 | $62620.00 |
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