The LD2981ABM40TR is a high-quality voltage regulator component manufactured by STMicroelectronics, a global semiconductor leader known for its innovative and reliable products. This low-dropout (LDO) regulator is designed to deliver a steady and precise 4.0V output voltage, making it an ideal choice for sensitive electronic applications that require a stable power supply.

Key Features

• Output Voltage: 4.0V, which is suitable for a wide range of low-voltage electronics.
• Low Dropout Voltage: Ensures efficient operation even when the input voltage is close to the output voltage, maximizing battery life in portable devices.
• High Accuracy: Output voltage tolerance is within ±1%, providing precise voltage regulation for critical applications.
• Current Capacity: Capable of supplying up to 50mA of output current, sufficient for a variety of low-power devices.
• Low Quiescent Current: The low ground current of the device contributes to its overall power efficiency, making it suitable for battery-powered applications.
• Thermal Overload Protection: Protects the regulator from damage due to overheating, ensuring long-term reliability.
• Short-Circuit Protection: Offers safety features that prevent damage to the regulator and the connected load in the event of a short circuit.

Applications

The LD2981ABM40TR is versatile and can be used in various applications such as:

• Battery-powered devices
• Portable electronics
• Microcontroller power supply
• Low-power instrumentation

Package and Availability

This LDO voltage regulator is available in a SOT-23-5 package, which is known for its small footprint and suitability for space-constrained applications. The "TR" at the end of the product code indicates that this component is provided in tape and reel packaging, which is ideal for automated assembly processes. As part of STMicroelectronics' commitment to environmental sustainability, the LD2981ABM40TR is designed to meet RoHS (Restriction of Hazardous Substances) and Reach requirements.