LD2979M30TR

Product Overview

• Category: Integrated Circuit
• Use: Power Management
• Characteristics: High Efficiency, Low Power Consumption
• Package: SOT-23
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 3.0V
• Maximum Output Current: 100mA
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 20µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LD2979M30TR has three pins:

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

Functional Features

• High Efficiency: The LD2979M30TR is designed to provide a high level of efficiency, ensuring minimal power loss during voltage regulation.
• Low Power Consumption: With a quiescent current of only 20µA, the LD2979M30TR minimizes power consumption when in standby or idle mode.
• Stable Output Voltage: It maintains a stable output voltage of 3.0V, even under varying load conditions.
• Short Circuit Protection: The integrated circuit includes short circuit protection to prevent damage to the device in case of a fault.

Advantages and Disadvantages

Advantages

• Compact package size (SOT-23) allows for easy integration into space-constrained designs.
• Wide input voltage range enables compatibility with various power sources.
• Low dropout voltage ensures efficient operation even with low input voltages.
• Excellent line and load regulation characteristics provide stable output voltage.

Disadvantages

• Limited maximum output current (100mA) may not be suitable for high-power applications.
• Operating temperature range (-40°C to +85°C) may restrict usage in extreme environments.

Working Principles

The LD2979M30TR is a voltage regulator that utilizes a linear regulator architecture. It regulates the input voltage to a constant 3.0V output voltage, regardless of changes in the input voltage or load conditions. The internal circuitry of the LD2979M30TR ensures efficient power conversion while maintaining a stable output voltage.

Detailed Application Field Plans

The LD2979M30TR is commonly used in various electronic devices and systems, including:

1. Battery-powered devices: It provides a stable voltage supply for portable electronics such as smartphones, tablets, and wearable devices.
2. IoT (Internet of Things) devices: The LD2979M30TR is suitable for powering sensors, microcontrollers, and other low-power IoT devices.
3. Industrial applications: It can be used in industrial automation systems, control circuits, and instrumentation equipment.

Detailed and Complete Alternative Models

1. LD2981M33TR: Similar to LD2979M30TR but with an output voltage of 3.3V.
2. LD2960M25TR: A lower dropout voltage alternative with an output voltage of 2.5V.
3. LD2937Z33TR: Offers higher maximum output current (500mA) with an output voltage of 3.3V.

These alternative models provide flexibility in choosing the appropriate voltage regulator based on specific application requirements.

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