LM7805SX/NOPB Texas Instruments Integrated Circuit (Other) In Stock
The LM7805SX/NOPB is a fixed 5 V linear voltage regulator from Texas Instruments supporting input voltages up to 30 V and a 2 V typical dropout in a 3-pin SOT-223 package. Designed for reliable 5 V rail generation in consumer and industrial designs. Available worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LM7805SX/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0405(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM7805SX/NOPB?
- Fixed 5 V output voltage for direct microcontroller and logic-level power supply
- Wide input voltage range of 7.5 V to 30 V, absolute max 35 V
- 2 V typical dropout voltage at rated output current
- 3-pin SOT-223 surface-mount package with integrated heat-spreading pad
- RoHS-compliant, lead-free (NOPB) packaging per TI's e3 JEDEC standard
What is LM7805SX/NOPB used for?
The LM7805SX/NOPB is widely used to generate stable 5 V power rails in consumer electronics, industrial control panels, and embedded system prototype boards fed from unregulated 9 V to 24 V supplies. Its SOT-223 package with exposed thermal pad allows moderate heat dissipation on standard FR4 PCBs without external heatsinks at low-to-medium load currents. The fixed 5 V output simplifies designs by eliminating external feedback resistors and compensation components.
What are the specifications of LM7805SX/NOPB?
| Pbfree Code | Yes |
| Date Of Intro | 2016-07-23 |
| YTEOL | 15 |
| Adjustability | FIXED |
| Dropout Voltage1-Nom | 2V |
| Input Voltage Absolute-Max | 35V |
| Input Voltage-Max | 30V |
| Input Voltage-Min | 7.5V |
| JESD-30 Code | R-PSSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max | 0.05% |
| Load Regulation-Max | 0.05% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Output Current1-Max | 1.5A |
| Output Voltage1-Max | 5.25V |
| Output Voltage1-Min | 4.75V |
| Output Voltage1-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.55TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 245 |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 3% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the LM7805SX/NOPB datasheet?
LM7805SX/NOPB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM7805SX/NOPB?
Compatible alternatives and drop-in replacements for LM7805SX/NOPB:
Frequently Asked Questions
What is the input voltage range for the LM7805SX/NOPB, and can it handle a 24 V supply rail directly?
The LM7805SX/NOPB operates with input voltages from 7.5 V to 30 V and an absolute maximum of 35 V, so a 24 V supply rail is within its specified range. At 24 V input and 5 V output, the device drops 19 V across its junction, so output current must be limited to stay within the package's power dissipation rating to avoid thermal shutdown.
How does the LM7805SX/NOPB's SOT-223 package handle thermal dissipation compared to older TO-220 versions?
The SOT-223 package of the LM7805SX/NOPB includes an exposed thermal pad that transfers heat directly to the PCB copper pour, providing effective thermal management for dissipation up to several watts when paired with a 1 cm² or larger copper area. The TO-220 package offers lower junction-to-case thermal resistance and is better suited for higher current loads exceeding 1 A, while SOT-223 is preferred for compact surface-mount designs at moderate currents.
When is the LM7805SX/NOPB a preferred choice over a switching regulator for 5 V generation?
The LM7805SX/NOPB is preferred over switching regulators in noise-sensitive analog circuits, audio equipment, and precision sensor front ends where the ripple from a switching converter at 100 kHz to 2 MHz would degrade signal quality. Its linear regulation delivers clean DC output without switching noise, and the simple 3-pin SOT-223 footprint reduces BOM complexity compared to inductors, bootstrap capacitors, and feedback networks required by DC-DC converters.
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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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