REG113NA-5/250 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
REG113NA-5/250 is a Texas Instruments 400 mA low-noise, low-dropout LDO linear regulator with a fixed 5 V output, 250 mV typical dropout voltage, and 5.4 V to 10 V input range, housed in a 5-pin SOT-23 package for space-efficient designs.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- REG113NA-5/250 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3726(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-5/250?
- 400 mA output current with 250 mV typical dropout enabling efficient 5 V regulation from standard 6 V to 9 V sources
- Low output noise suitable for analog, RF, and precision sensor supply rails requiring clean 5 V power
- Wide 5.4 V to 10 V input range accommodating 6 V, 7.5 V, and 9 V adapter and battery inputs
- Compact 5-pin SOT-23 package with RoHS-compliant lead-free construction for high-density PCB designs
What is REG113NA-5/250 used for?
REG113NA-5/250 is designed to regulate 5 V power for analog front-ends, operational amplifiers, and precision sensors in industrial measurement, medical instrumentation, and audio equipment powered from 6 V to 9 V sources. Its low noise output makes it suitable for powering op-amp supply rails in strain gauge amplifiers, pressure transducers, and audio DACs where switching regulator noise would degrade signal quality. It is also used in portable handheld test instruments and battery-powered data loggers deriving a stable 5 V rail from a 9 V alkaline or 2-cell Li-ion battery pack.
What are the specifications of REG113NA-5/250?
| 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 | 5.4V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Line Regulation-Max | 0.15% |
| Load Regulation-Max | 0.15% |
| 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 | 5.15V |
| Output Voltage1-Min | 4.85V |
| Output Voltage1-Nom | 5V |
| 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-5/250 datasheet?
REG113NA-5/250 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for REG113NA-5/250?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the typical dropout voltage of REG113NA-5/250 at full 400 mA load, and what minimum input is required?
REG113NA-5/250 has a typical dropout voltage of 250 mV and a maximum of 410 mV at 400 mA output. This means the input supply must be at least 5.41 V (5 V output plus 410 mV maximum dropout) to maintain regulation, and the minimum specified input voltage is 5.4 V, so a 6 V source provides adequate headroom across the full load range.
For a 9 V battery-powered industrial sensor, how much headroom does REG113NA-5/250 have at its 5 V output?
With a 9 V alkaline battery as input and a 5 V regulated output, REG113NA-5/250 operates with 4 V of input headroom above its 250 mV typical dropout. As the battery discharges toward 5.4 V minimum input, the regulator can still maintain 5 V regulation up to 400 mA, giving roughly 200+ hours of operation in low-power sensor applications drawing 10 mA to 50 mA.
How does REG113NA-5/250's low-noise characteristic benefit an op-amp circuit measuring millivolt-level sensor signals?
REG113NA-5/250's low output noise, typically in the µV RMS range across audio and low-frequency bands, prevents supply ripple from coupling into op-amp supply rails and appearing as noise at the amplifier output. For a precision instrumentation amplifier with 60 dB gain, even 10 µV of supply noise at the op-amp rail can produce 10 mV of output noise, so a low-noise LDO is essential for millivolt-level signal measurement accuracy.
Can REG113NA-5/250 be used in place of a 7805 linear regulator for a compact 5 V power section?
Yes, REG113NA-5/250 can replace a TO-220 packaged 7805 in applications where board space is constrained, as the SOT-23 package occupies under 5 mm² versus the 7805's ~60 mm². However, REG113NA-5/250 is limited to 400 mA output while the 7805 typically supports 1 A, so the replacement is suitable only for loads below 400 mA. Input voltage must also remain within 5.4 V to 10 V.
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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+ | $3.8415 | $3.84 |
| 9+ | $2.8171 | $25.35 |
| 28+ | $2.5610 | $71.71 |
| 50+ | $1.5002 | $75.01 |
| 150+ | $1.4364 | $215.46 |
| 250+ | $1.3726 | $343.15 |
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