L4940 (6)
The L4940 series is available from STMicroelectronics at Xecor. Designed for voltage regulation, the L4940 offers high performance with a fixed 10V output, a maximum output current of 1.5A, and a low dropout voltage of 0.9V. Available in the TO-220-3 package, it is ideal for applications in automotive, industrial, and telecommunications industries. Whether used in power management systems, automotive electronics, or communication devices, this series ensures reliable performance, efficiency, and robust protection features like over-temperature, reverse polarity, and short-circuit protection for demanding applications. Xecor is an authorized distributor for STMicroelectronics. Please view our extensive selection of the L4940 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| L4940V12 | free TO-220 3-pin LDO regulator with fixed 12V output and 0.9V dropout, PSFM3 | TO-220-3 | 6,636 | |
| L4940V85 | 8.5V LDO Voltage Regulator | TO220-3 | 9,339 | |
| L4940V5 | The L4940V5 regulator comes in a 3-pin TO-220 package with a tab for easy mounting on a PCB | TO-220 | 5,634 | |
| L4940D2T5-TR | STMICROELECTRONICS L4940D2T5-TRIC Regulator with 1.5A Output and 5V Voltage in D2PAK Package | D2PAK | 6,644 | |
| L4940D2T5 | 5V 1.5A Voltage Regulator | TO-263-3 | 9,436 | |
| L4940V10 | French Electronic Distributor since 1988 | TO-220-3 | 6,475 |
Key Featrues
Low Dropout Voltage (0.5V Nominal, 0.9V Max) - The low dropout voltage minimizes power loss, enhancing efficiency and making it ideal for applications with limited input voltage headroom.
Wide Operating Temperature Range (-40°C to 150°C) - This feature allows the regulator to function reliably in extreme environments, expanding its use cases to industrial, automotive, and outdoor applications.
Fixed Output Voltage (10V) - The fixed output voltage ensures consistent and precise power delivery, reducing the need for additional circuitry and simplifying design for specific voltage requirements.
Robust Protection Features (Over Temperature, Reverse Polarity, Short Circuit) - Built-in protection mechanisms safeguard the regulator and connected components from damage, improving reliability and longevity in critical applications.
Applications
Automotive Voltage Regulation: The L4940V10 is well-suited for automotive applications, such as regulating voltage for infotainment systems, dashboard displays, and onboard sensors. Its wide operating temperature range (-40°C to 150°C) and robust protection features, including over-temperature and short-circuit protection, ensure reliable performance in demanding automotive conditions.
Consumer Electronics Power Management: This voltage regulator is perfect for use in consumer electronics, such as set-top boxes, routers, and audio amplifiers. Its fixed 10V output and low quiescent current make it an efficient choice for maintaining stable power supply in compact, energy-efficient devices.
Medical Device Power Regulation: The L4940V10 can be used in medical devices, such as portable diagnostic equipment and patient monitoring systems. Its precise 10V output and low dropout voltage ensure consistent performance, while its compliance with industrial standards makes it a reliable choice for critical healthcare applications.
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