STMicroelectronics

LD2981ABU33TR

LD2981ABU33TR Description

The LD2981ABU33TR is a high-performance linear voltage regulator from STMicroelectronics, designed to deliver a stable 3.3V output with a maximum current of 100mA. This device is part of the Linear & Switching Voltage Regulators category and is offered in a compact SOT89-3 package. With its fixed output type and positive output configuration, the LD2981ABU33TR is well-suited for a wide range of applications requiring reliable voltage regulation.

LD2981ABU33TR Features

• Technical Specifications:

  • Input Voltage Range: Up to 16V
  • Output Voltage: 3.3V (Fixed)
  • Output Current: 100mA
  • Number of Regulators: 1
  • Voltage Dropout (Max): 0.375V @ 100mA
  • Current - Supply (Max): 2.6 mA
  • Current - Quiescent (Iq): 150 µA
  • PSRR: 63dB (1kHz)
  • Protection Features: Over Current, Over Temperature

• Compliance and Packaging:

  • RoHS Status: ROHS3 Compliant
  • REACH Status: REACH Unaffected
  • Moisture Sensitivity Level (MSL): 1 (Unlimited)
  • Package: Tape & Reel (TR)

• Unique Features and Advantages:

  • The LD2981ABU33TR offers a low dropout voltage of 0.375V, ensuring stable operation even with low input voltages.
  • Its low quiescent current of 150 µA makes it ideal for battery-powered applications where power consumption is critical.
  • The device features over current and over temperature protection, enhancing reliability and safety in various applications.

LD2981ABU33TR Applications

The LD2981ABU33TR is ideal for applications where a stable 3.3V output is required, such as:

• Portable Electronics: Mobile devices, wearables, and IoT devices that require low power consumption and stable voltage regulation.
• Industrial Control Systems: Systems that require reliable voltage regulation in harsh environments.
• Automotive Electronics: In-vehicle electronics that demand stable power supply and protection against voltage fluctuations.

Conclusion of LD2981ABU33TR

The LD2981ABU33TR from STMicroelectronics is a reliable and efficient linear voltage regulator, offering a fixed 3.3V output with a maximum current of 100mA. Its low dropout voltage, low quiescent current, and robust protection features make it an excellent choice for a wide range of applications, from portable electronics to industrial control systems. With its compact SOT89-3 package and compliance with RoHS and REACH regulations, the LD2981ABU33TR is a versatile and environmentally friendly solution for voltage regulation needs.