LD2980ABM18TR

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: Low Dropout, 1.8V Output, SOT-23 Package
• Package: SOT-23
• Essence: LD2980ABM18TR is a voltage regulator integrated circuit designed to provide a stable 1.8V output voltage with low dropout characteristics.
• 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: 1.8V
• Dropout Voltage: 300mV at 100mA
• Maximum Output Current: 100mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LD2980ABM18TR has three pins:

1. VIN (Pin 1): Input voltage pin.
2. GND (Pin 2): Ground pin.
3. VOUT (Pin 3): Output voltage pin.

Functional Features

• Low dropout voltage: The LD2980ABM18TR exhibits a low dropout voltage of only 300mV at 100mA output current, ensuring efficient power conversion.
• Stable output voltage: It provides a stable 1.8V output voltage, making it suitable for applications requiring a precise voltage level.
• Low quiescent current: With a quiescent current of only 75µA, the LD2980ABM18TR minimizes power consumption when in standby or idle mode.
• Thermal shutdown protection: The IC incorporates thermal shutdown protection, preventing damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient power conversion. - Stable output voltage for precise voltage requirements. - Low quiescent current minimizes power consumption. - Thermal shutdown protection prevents damage from overheating.

Disadvantages: - Limited maximum output current of 100mA may not be suitable for high-power applications. - Input voltage range limited to 2.5V to 16V, restricting compatibility with certain power sources.

Working Principles

The LD2980ABM18TR is a linear voltage regulator that operates by maintaining a constant voltage difference between the input and output terminals. It utilizes a pass transistor to regulate the output voltage based on the feedback received from an internal reference voltage. The dropout voltage is minimized through the use of a low resistance pass element, ensuring efficient power conversion.

Detailed Application Field Plans

The LD2980ABM18TR can be used in various applications where a stable 1.8V voltage supply is required. Some potential application fields include:

1. Battery-Powered Devices: Portable electronic devices such as smartphones, tablets, and wearable devices often require a regulated 1.8V supply for their internal circuitry.
2. Embedded Systems: Microcontrollers, sensors, and other components in embedded systems often rely on a stable voltage source, making the LD2980ABM18TR suitable for powering these devices.
3. Communication Equipment: Wireless routers, modems, and network switches often require a regulated voltage supply for their internal circuitry.

Detailed and Complete Alternative Models

1. LD1117S33TR: A similar voltage regulator IC with a fixed 3.3V output voltage and a maximum output current of 800mA.
2. LM317T: A versatile adjustable voltage regulator IC capable of providing output voltages ranging from 1.25V to 37V with a maximum output current of 1.5A.
3. LT1763CS8-1.8: A low dropout voltage regulator IC with a fixed 1.8V output voltage and a maximum output current of 500mA.

(Note: The above alternative models are provided for reference purposes and may have different specifications and pin configurations. It is recommended to consult the respective datasheets for detailed information.)

In conclusion, the LD2980ABM18TR is a voltage regulator integrated circuit that offers a stable 1.8V output voltage with low dropout characteristics. Its compact SOT-23 package, low quiescent current, and thermal shutdown protection make it suitable for various applications in battery-powered devices, embedded systems, and communication equipment. While it has limitations in terms of maximum output current and input voltage range, there are alternative models available with different specifications to suit specific requirements.