規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 16V |
| Voltage-Output(Min/Fixed) | 5V |
| VoltageDropout(Max) | 0.375V @ 100mA |
| Current-Output | 100mA |
| Current-Quiescent(Iq) | 150 µA |
| Current-Supply(Max) | 2.6 mA |
| PSRR | 63dB (1kHz) |
| ProtectionFeatures | Over Current, Over Temperature |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | TO-243AA |
概述
Description
The LD2981ABU50TR is a low-dropout (LDO) voltage regulator designed by STMicroelectronics. It is primarily used to provide a stable and precise 5V output from a higher input voltage, with a low dropout voltage of approximately 50mV at light loads. The component is ideal for battery-powered and portable applications due to its low quiescent current consumption, which helps extend battery life. The LD2981ABU50TR features an internal current and thermal limiting mechanism for protection against overload and overheating, ensuring reliable operation.
This LDO regulator comes in a compact surface-mount SOT-89 package, making it suitable for space-constrained circuit designs. It is commonly used in applications such as microcontrollers, sensors, and communication devices where maintaining a stable voltage with minimal power loss is crucial. Its ease of use, combined with robust performance characteristics, makes the LD2981ABU50TR a popular choice for engineers and designers looking for efficient power management solutions in various electronic applications.
This LDO regulator comes in a compact surface-mount SOT-89 package, making it suitable for space-constrained circuit designs. It is commonly used in applications such as microcontrollers, sensors, and communication devices where maintaining a stable voltage with minimal power loss is crucial. Its ease of use, combined with robust performance characteristics, makes the LD2981ABU50TR a popular choice for engineers and designers looking for efficient power management solutions in various electronic applications.
Equivalent
Equivalent products to the LD2981ABU50TR, a low-dropout (LDO) voltage regulator, might include the Microchip MCP1700, Texas Instruments LP2985, and ON Semiconductor NCP1117. These components are low-dropout regulators with similar voltage and current ratings, suitable for comparable applications. Always verify the specifications and pin compatibility before substituting components.
Features
The LD2981ABU50TR is a low-dropout (LDO) voltage regulator produced by STMicroelectronics. Key features include:
1. Output Voltage: It provides a fixed output voltage of 5.0V.
2. Input Voltage: The regulator supports an input voltage range from 2.3V to 16V.
3. Output Current: It can deliver up to 100 mA of output current.
4. Low Dropout Voltage: It typically has a dropout voltage of 100 mV at light loads, making it efficient for battery-powered applications.
5. Quiescent Current: It features low quiescent current, typically around 50 µA, contributing to power efficiency.
6. Protection Features: Includes short-circuit current protection and thermal shutdown to prevent damage from overheating or overcurrent conditions.
7. Package: Comes in a compact SOT-89 package, which is suitable for space-constrained applications.
8. Stability: Requires minimal external components for stability, often just a small ceramic output capacitor.
These features make the LD2981ABU50TR suitable for applications requiring low power consumption and high efficiency, such as portable devices and battery-operated equipment.
1. Output Voltage: It provides a fixed output voltage of 5.0V.
2. Input Voltage: The regulator supports an input voltage range from 2.3V to 16V.
3. Output Current: It can deliver up to 100 mA of output current.
4. Low Dropout Voltage: It typically has a dropout voltage of 100 mV at light loads, making it efficient for battery-powered applications.
5. Quiescent Current: It features low quiescent current, typically around 50 µA, contributing to power efficiency.
6. Protection Features: Includes short-circuit current protection and thermal shutdown to prevent damage from overheating or overcurrent conditions.
7. Package: Comes in a compact SOT-89 package, which is suitable for space-constrained applications.
8. Stability: Requires minimal external components for stability, often just a small ceramic output capacitor.
These features make the LD2981ABU50TR suitable for applications requiring low power consumption and high efficiency, such as portable devices and battery-operated equipment.
Pinout
The LD2981ABU50TR is a low-dropout (LDO) voltage regulator. It typically comes in a SOT-89 package, which has 3 pins. Here are the pin functions:
1. VIN: This is the input pin where the unregulated voltage is supplied. The regulator takes this input voltage and regulates it to a fixed output voltage.
2. GND: This is the ground pin, the reference point for the input and output voltages.
3. VOUT: This is the output pin where the regulated voltage is available. The LD2981ABU50TR is specifically designed to provide a fixed output voltage of 5.0V.
These pins are standard for a SOT-89 package LDO regulator, allowing the device to maintain a stable output voltage with low input-to-output voltage differential.
1. VIN: This is the input pin where the unregulated voltage is supplied. The regulator takes this input voltage and regulates it to a fixed output voltage.
2. GND: This is the ground pin, the reference point for the input and output voltages.
3. VOUT: This is the output pin where the regulated voltage is available. The LD2981ABU50TR is specifically designed to provide a fixed output voltage of 5.0V.
These pins are standard for a SOT-89 package LDO regulator, allowing the device to maintain a stable output voltage with low input-to-output voltage differential.
Manufacturer
The LD2981ABU50TR is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a broad range of products, including integrated circuits and discrete devices. Their products serve a wide variety of applications such as automotive, industrial, personal electronics, and communications equipment. The company is known for its focus on innovation and sustainability in the technology sector.
Application
The LD2981ABU50TR is a low-dropout (LDO) voltage regulator designed for applications requiring efficient power management. Its primary application areas include:
1. Battery-Powered Devices: Ideal for extending battery life in portable electronics like smartphones, tablets, and wearables.
2. Consumer Electronics: Used in devices such as cameras and handheld gadgets for stable power supply.
3. Industrial Equipment: Suitable for providing reliable voltage regulation in industrial automation and control systems.
4. Telecommunications: Applied in networking devices and communication equipment for consistent voltage output.
5. Automotive Electronics: Utilized in car infotainment systems, dashboards, and other electronic modules requiring regulated voltage.
These applications benefit from the LDO's low power consumption and efficient performance.
1. Battery-Powered Devices: Ideal for extending battery life in portable electronics like smartphones, tablets, and wearables.
2. Consumer Electronics: Used in devices such as cameras and handheld gadgets for stable power supply.
3. Industrial Equipment: Suitable for providing reliable voltage regulation in industrial automation and control systems.
4. Telecommunications: Applied in networking devices and communication equipment for consistent voltage output.
5. Automotive Electronics: Utilized in car infotainment systems, dashboards, and other electronic modules requiring regulated voltage.
These applications benefit from the LDO's low power consumption and efficient performance.
Package
The LD2981ABU50TR is a low-dropout voltage regulator packaged in a SOT-89 form factor. This package type is compact and suitable for surface-mount applications, providing efficient thermal management and ease of integration in various electronic circuits.
