LM2940CS-5.0In StockTexas Instruments
LM2940CS-5.0 is a 5V fixed-output low-dropout linear voltage regulator with up to 1A output current, 0.5V typical dropout voltage, and 26V max input. From $1.00, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- OBSOLETE
- Datasheet
- LM2940CS-5.0 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0036(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 5V output voltage with tight ±1% accuracy for stable power delivery
- Low 0.5V typical dropout voltage enables efficient operation close to output voltage
- 1A output current capacity supports a wide range of load requirements
- 26V maximum input voltage rating for robust input flexibility
- Built-in current limiting and thermal shutdown protection for reliability
Applications
The LM2940CS-5.0 is widely used in battery-powered portable electronics where low dropout is critical to maximizing battery life. It suits automotive and industrial applications requiring a stable 5V rail from higher-voltage sources up to 26V. Common designs include microcontroller power supplies, sensor modules, and embedded system boards needing clean, regulated 5V power.
Specifications
| Pbfree Code | Yes |
| Date Of Intro | 1995-01-01 |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1V |
| Dropout Voltage1-Nom | 0.5V |
| Input Voltage Absolute-Max | 45V |
| Input Voltage-Max | 26V |
| Input Voltage-Min | 6.25V |
| JESD-30 Code | R-PSSO-G3 |
| JESD-609 Code | e0 |
| Line Regulation-Max | 0.05% |
| Load Regulation-Max | 0.08% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Output Current1-Max | 1A |
| 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 | TUBE |
| Peak Reflow Temperature (Cel) | 235 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Voltage Tolerance-Max | 5% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM2940CS-5.0:
Regulator, 5V, 1V Dropout, BIPolar, PSSO3
Regulator, 5V, 1V Dropout, BIPolar, PSSO3
Regulator, 5V, 1V Dropout, BIPolar, PSSO3
Frequently Asked Questions
What is the output voltage and maximum output current of the LM2940CS-5.0?
The LM2940CS-5.0 provides a fixed 5V regulated output voltage with a maximum output current of 1A. Its typical dropout voltage is only 0.5V (1V max), making it suitable for low-voltage differential applications.
What is the input voltage range for the LM2940CS-5.0?
The LM2940CS-5.0 accepts an input voltage ranging from 6.25V (min) to 26V (max), with an absolute maximum of 45V. This wide range makes it compatible with automotive, industrial, and battery-powered systems.
What protection features does the LM2940CS-5.0 include?
The LM2940CS-5.0 integrates internal current limiting and thermal shutdown protection, preventing damage under overload or high-temperature conditions. It also features a reverse battery protection mechanism suitable for automotive environments.
What package type is the LM2940CS-5.0 available in?
The LM2940CS-5.0 is available in a 3-pin SOT-223 (R-PSSO-G3) surface-mount package, offering a compact footprint with good thermal dissipation for PCB integration in space-constrained designs.
What are common applications for the LM2940CS-5.0?
Typical applications include 5V power rails for microcontrollers, sensors, and embedded systems, as well as automotive electronics, portable battery-powered devices, and industrial control boards requiring a stable low-dropout regulated supply.
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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+ | $3.5760 | $3.58 |
| 4+ | $2.3840 | $9.54 |
| 11+ | $1.7880 | $19.67 |
| 185+ | $1.0852 | $200.76 |
| 240+ | $1.0444 | $250.66 |
| 300+ | $1.0036 | $301.08 |
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