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L4949EDTR-E
+BOMIC REG LINEAR 5V 100MA 8SO
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ManufacturerSTMicroelectronics
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Mfr. Part #L4949EDTR-E
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Datasheet L4949EDTR-E DataSheet
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Package 8-SOIC
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In Stock4032
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Series | Automotive, AEC-Q100 |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 28V |
| Voltage-Output(Min/Fixed) | 5V |
| VoltageDropout(Max) | 0.5V @ 100mA |
| Current-Output | 100mA |
| Current-Quiescent(Iq) | 300 µA |
| Current-Supply(Max) | 5 mA |
| ControlFeatures | Reset |
| ProtectionFeatures | Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Overview
Description
The L4949EDTR-E is a low-dropout voltage regulator specifically designed for automotive applications. It is part of the L4949 series, manufactured by STMicroelectronics. This component is engineered to provide a stable output voltage, even when the input voltage is slightly higher than the output. It features an integrated reset function and watchdog timer, which are essential for ensuring reliability and safety in automotive electronics.
Key specifications include an output current capability of up to 100mA, a low dropout voltage of typically 0.5V at maximum load, and an adjustable output voltage typically around 5V. It also includes protections against overheating, overcurrent, and reverse voltage, making it robust for harsh automotive environments.
The L4949EDTR-E is often used in applications such as microcontroller power supply, sensor modules, and other critical electronic systems in vehicles. It comes in a compact surface-mount package, facilitating easy integration into printed circuit boards. Its design ensures high performance and reliability, meeting the stringent requirements of automotive standards.
Key specifications include an output current capability of up to 100mA, a low dropout voltage of typically 0.5V at maximum load, and an adjustable output voltage typically around 5V. It also includes protections against overheating, overcurrent, and reverse voltage, making it robust for harsh automotive environments.
The L4949EDTR-E is often used in applications such as microcontroller power supply, sensor modules, and other critical electronic systems in vehicles. It comes in a compact surface-mount package, facilitating easy integration into printed circuit boards. Its design ensures high performance and reliability, meeting the stringent requirements of automotive standards.
Equivalent
The L4949EDTR-E is a voltage regulator IC. Equivalent products with similar functionalities include the LM2940, LM7805, and LT1121 series. These regulators provide fixed output voltage with low dropout, suitable for automotive and industrial applications. Always verify the specific requirements such as output current, dropout voltage, and package type when choosing an equivalent.
Features
The L4949EDTR-E is a low-dropout voltage regulator designed for automotive applications. It provides a fixed output voltage of 5V with a high output current capability of up to 100mA. Key features include low dropout voltage, low quiescent current, and stability with low ESR capacitors. It incorporates protection features such as overcurrent protection, overtemperature protection, and reverse polarity protection, ensuring reliable operation under harsh conditions. The device also includes an enable input for on/off control, allowing for power management in applications. Its compact package and robust design make it suitable for use in automotive environments, where space and reliability are critical. The L4949EDTR-E is compliant with automotive standards, making it a suitable choice for automotive electronic systems.
Pinout
The L4949EDTR-E is a voltage regulator IC manufactured by STMicroelectronics. It typically comes in an 8-pin package. The primary function of this IC is to provide a stable voltage output, often used in automotive applications due to its reliability and performance under varying conditions.
Here's a brief overview of the pin functions in a standard 8-pin configuration:
1. Pin 1 (N.C.): No connection.
2. Pin 2 (I): Input pin where the unregulated voltage is applied.
3. Pin 3 (GND): Ground pin for the circuit.
4. Pin 4 (SI): Sense input.
5. Pin 5 (N.C.): No connection.
6. Pin 6 (D): Reset delay capacitor connection.
7. Pin 7 (RO): Reset output, which indicates the status of the regulator.
8. Pin 8 (Q): Output pin where the regulated voltage is provided.
The L4949EDTR-E is designed to offer features like low dropout voltage, high output current capability, and thermal protection, making it suitable for maintaining stable voltage levels in various electronic circuits.
Here's a brief overview of the pin functions in a standard 8-pin configuration:
1. Pin 1 (N.C.): No connection.
2. Pin 2 (I): Input pin where the unregulated voltage is applied.
3. Pin 3 (GND): Ground pin for the circuit.
4. Pin 4 (SI): Sense input.
5. Pin 5 (N.C.): No connection.
6. Pin 6 (D): Reset delay capacitor connection.
7. Pin 7 (RO): Reset output, which indicates the status of the regulator.
8. Pin 8 (Q): Output pin where the regulated voltage is provided.
The L4949EDTR-E is designed to offer features like low dropout voltage, high output current capability, and thermal protection, making it suitable for maintaining stable voltage levels in various electronic circuits.
Manufacturer
The L4949EDTR-E is manufactured by STMicroelectronics. STMicroelectronics is a global technology company specializing in the design, development, and manufacturing of a wide range of semiconductor products. These products are used in various applications across different industries, including automotive, industrial, personal electronics, and communications equipment. The company is known for its innovation in microelectronics and integrated circuits, providing solutions that power and enable modern electronic devices and systems. STMicroelectronics operates in multiple countries, serving a wide customer base with its diverse product portfolio.
Application
The L4949EDTR-E is a low-dropout (LDO) linear voltage regulator commonly used in automotive applications. It provides a stable output voltage and is designed to accommodate the demanding conditions of automotive environments. Key application areas include power supply stabilization for microcontrollers, sensors, and other electronic components within vehicles. Additionally, the L4949EDTR-E can be used in battery-powered systems, ensuring efficient power management with low quiescent current. Its robust performance in delivering precise voltage regulation makes it suitable for various automotive systems like infotainment, navigation, driver assistance, and safety systems.
Package
The L4949EDTR-E is housed in a SOIC-8 package. This type of package is a Small Outline Integrated Circuit with 8 pins, commonly used for surface mounting on circuit boards.
