LD2981ABM30TR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, 3.0V Output, SOT-23 Package
• Package: SOT-23
• Essence: LD2981ABM30TR is a voltage regulator IC that provides a stable output voltage of 3.0V with low dropout voltage. It comes in a small SOT-23 package, making it suitable for space-constrained applications.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage: 3.0V
• Dropout Voltage: 300mV at 100mA load current
• Output Current: Up to 100mA
• Quiescent Current: 75µA typical
• Line Regulation: ±0.05% typical
• Load Regulation: ±0.1% typical
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LD2981ABM30TR has the following pin configuration:

```

---

| | --| V IN|-- Input Voltage --| GND |-- Ground --| V OUT|-- Output Voltage |____| ```

Functional Features

• Low dropout voltage: The LD2981ABM30TR has a low dropout voltage of only 300mV at 100mA load current, ensuring efficient power conversion.
• Stable output voltage: It provides a stable output voltage of 3.0V, making it suitable for applications requiring a precise voltage level.
• Low quiescent current: With a typical quiescent current of 75µA, it minimizes power consumption when the load is light.
• Wide input voltage range: The IC can accept input voltages ranging from 2.5V to 16V, providing flexibility in various applications.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - Stable output voltage for precise voltage requirements. - Small SOT-23 package suitable for space-constrained applications. - Wide input voltage range provides flexibility.

Disadvantages: - Limited output current capability (up to 100mA). - May require additional heat dissipation measures for high load currents.

Working Principles

The LD2981ABM30TR is a linear voltage regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from a voltage divider connected to the output. The pass transistor adjusts its resistance to maintain a constant output voltage despite changes in the input voltage or load conditions.

Detailed Application Field Plans

The LD2981ABM30TR is commonly used in various electronic devices and systems where a stable 3.0V power supply is required. Some typical application fields include:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearable devices often require a stable 3.0V power source. The LD2981ABM30TR can be used to regulate the battery voltage and provide a reliable power supply.

2. Industrial control systems: Many industrial control systems rely on precise voltage levels for their operation. The LD2981ABM30TR can be used in these systems to ensure stable and accurate power supply to critical components.

3. Automotive electronics: In automotive applications, where voltage fluctuations are common, the LD2981ABM30TR can be used to regulate the voltage supplied to various electronic modules, ensuring proper operation and protection against voltage spikes.

Detailed and Complete Alternative Models

1. LD2981ABM33TR: Similar to LD2981ABM30TR, but provides a 3.3V output voltage.
2. LD2981ABM25TR: Similar to LD2981ABM30TR, but provides a 2.5V output voltage.
3. LD2981ABM28TR: Similar to LD2981ABM30TR, but provides a 2.8V output voltage.

These alternative models offer different output voltage options while maintaining similar characteristics and package types.

(Note: The content provided above is approximately 380 words. Please adjust the length as required.)