REG103FA-5KTTT Texas Instruments Integrated Circuit (Other) In Stock
REG103FA-5KTTT is a 5V fixed-output ultra-low dropout linear voltage regulator from Texas Instruments, featuring 0.115V typical dropout voltage, 500mA output current, and 16V absolute maximum input. Ideal for battery-powered and low-noise applications. From $3.91, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- REG103FA-5KTTT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.9129(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low dropout voltage of 0.115V typical (0.25V max) enables efficient operation close to output rail
- Fixed 5V output with tight regulation for stable power delivery in noise-sensitive designs
- Wide input voltage range from 5.25V to 15V supports diverse power supply architectures
- SOIC-5 (R-PSSO-G5) compact package optimized for space-constrained PCB layouts
- Lead-free (Pb-free) construction compliant with RoHS and JESD-609 e3 environmental standards
Applications
The REG103FA-5KTTT is well-suited for battery-powered portable devices where minimizing voltage headroom loss is critical. It serves as a post-regulator in telecom and industrial equipment requiring clean, low-noise 5V rails. The device is also widely used in data acquisition systems, sensor interfaces, and audio circuits where stable, low-dropout regulation ensures accurate signal processing.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.25V |
| Dropout Voltage1-Nom | 0.115V |
| Input Voltage Absolute-Max | 16V |
| Input Voltage-Max | 15V |
| Input Voltage-Min | 5.25V |
| JESD-30 Code | R-PSSO-G5 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.175% |
| Load Regulation-Max | 0.175% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -55 °C |
| Output Current1-Max | 0.5A |
| Output Voltage1-Max | 5.1V |
| Output Voltage1-Min | 4.9V |
| Output Voltage1-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP5H,.6,67TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| 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 | Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.7mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 2.8% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the dropout voltage of the REG103FA-5KTTT?
The REG103FA-5KTTT has a typical dropout voltage of 0.115V and a maximum dropout voltage of 0.25V at full load. This ultra-low dropout characteristic allows the regulator to maintain a stable 5V output even when the input supply is only slightly above 5V, making it ideal for battery-powered applications where supply voltage may be marginal.
What is the input voltage range for the REG103FA-5KTTT?
The REG103FA-5KTTT accepts an input voltage ranging from 5.25V minimum to 15V maximum, with an absolute maximum rating of 16V. Operating beyond 16V may permanently damage the device. For reliable regulation, ensure the input stays within the 5.25V–15V range at all times.
What package does the REG103FA-5KTTT use, and what are its key mechanical details?
The REG103FA-5KTTT comes in a 5-pin SOIC package (JESD-30 code R-PSSO-G5), a compact surface-mount outline that simplifies PCB layout in space-constrained designs. The package is lead-free (Pb-free, JESD-609 e3) and compliant with RoHS requirements, making it suitable for environmentally conscious product designs.
What are typical applications for the REG103FA-5KTTT?
The REG103FA-5KTTT is commonly used in battery-powered portable electronics, industrial sensors, audio equipment, and data acquisition systems requiring a clean, stable 5V supply. Its ultra-low dropout voltage and low quiescent current make it particularly effective in designs where power efficiency and noise performance are priorities.
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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 |
|---|---|---|
| 1+ | $7.8259 | $7.83 |
| 5+ | $5.0868 | $25.43 |
| 21+ | $3.9129 | $82.17 |
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