REG113NA-3/250 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
REG113NA-3/250 is a 400 mA fixed 3 V output low-noise, low-dropout linear regulator in SOT-23-5 package. It features a typical dropout voltage of 250 mV and input range from 3.4 V to 10 V. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- REG113NA-3/250 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.5900(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of REG113NA-3/250?
- Ultra-low dropout voltage of 250 mV typical (410 mV max) at 400 mA output, minimizing power dissipation in battery-powered applications
- Fixed 3 V regulated output with wide input voltage range from 3.4 V to 10 V, supporting single-cell Li-ion and multi-cell battery systems
- Low-noise LDO architecture suitable for noise-sensitive RF, analog, and audio signal-chain circuits
- Compact SOT-23-5 (5-pin) package enabling space-efficient PCB layouts for wearables and portable electronics
What is REG113NA-3/250 used for?
REG113NA-3/250 is ideal for powering microcontrollers, RF modules, and analog sensor circuits from a 3.3 V to 10 V source where low noise and minimal voltage headroom are critical. Its 400 mA current capability and 250 mV typical dropout make it well-suited for single-cell Li-ion battery-powered portable devices such as wearables and IoT nodes. The compact SOT-23-5 footprint also fits naturally into space-constrained handheld and industrial sensor designs.
What are the specifications of REG113NA-3/250?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.41V |
| Dropout Voltage1-Nom | 0.25V |
| Input Voltage Absolute-Max | 12V |
| Input Voltage-Max | 10V |
| Input Voltage-Min | 3.4V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.09% |
| Load Regulation-Max | 0.09% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 85°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.4A |
| Output Voltage1-Max | 3.09V |
| Output Voltage1-Min | 2.91V |
| Output Voltage1-Nom | 3V |
| 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 | NMOS |
| 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 | 2.3% |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the REG113NA-3/250 datasheet?
REG113NA-3/250 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for REG113NA-3/250?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the dropout voltage of REG113NA-3/250 at maximum load current, and why does it matter for battery-powered designs?
REG113NA-3/250 has a maximum dropout voltage of 410 mV at 400 mA output, with a typical value of 250 mV. For a single-cell Li-ion battery discharging from 3.7 V down toward 3.4 V, this low dropout of 250 mV to 410 mV allows the regulator to maintain a clean 3 V rail much longer than standard LDOs that require 1 V or more of headroom.
What input voltage range does REG113NA-3/250 support, and which power sources are compatible?
REG113NA-3/250 accepts input voltages from 3.4 V minimum to 10 V maximum (absolute maximum 12 V). This range accommodates single-cell Li-ion batteries (3.6 V to 4.2 V), 5 V USB rails, and regulated 9 V sources, making it a versatile choice for portable, automotive accessory, and bench-supply-powered IoT designs.
How does the SOT-23-5 package of REG113NA-3/250 benefit compact PCB designs compared to larger LDO packages?
The SOT-23-5 (5-pin, JEDEC R-PDSO-G5) footprint occupies less than 9 mm² of PCB area, roughly 6× smaller than a standard SOT-223 package used for similar 400 mA LDOs. This allows engineers to fit the regulator within tight battery board layouts for wearables, hearing aids, and compact sensor modules without sacrificing thermal or electrical performance.
When is REG113NA-3/250 a better choice than a switching regulator for powering a 3 V analog front end?
REG113NA-3/250 is preferred when the input-to-output voltage differential is small (under 1 V), eliminating the switching noise inherent in DC-DC converters. Its low-noise LDO topology delivers a clean 3 V output suitable for 16-bit ADC reference circuits, RF LNA bias rails, and MEMS sensor supplies where switching ripple above 1 mV would degrade measurement accuracy.
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Why Buy from FindMyChip
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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.0500 | $4.05 |
| 8+ | $2.9700 | $23.76 |
| 24+ | $2.9550 | $70.92 |
| 26+ | $2.7000 | $70.20 |
| 100+ | $2.6800 | $268.00 |
| 250+ | $2.5900 | $647.50 |
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