LM2745MTCX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: TSSOP-14

Essence: The LM2745MTCX/NOPB is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The LM2745MTCX/NOPB is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 1A
• Dropout Voltage: 200mV at 500mA
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2745MTCX/NOPB has the following pin configuration:

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| | --| EN GND |-- Pin 1 --| FB NC |-- Pin 2 --| VIN VOUT|-- Pin 3 --| PG NC |-- Pin 4 |___________| ```

Functional Features

1. Adjustable Output Voltage: The LM2745MTCX/NOPB allows the user to adjust the output voltage within a specified range, providing flexibility for different applications.

2. High Efficiency: This voltage regulator IC offers high efficiency, minimizing power loss and maximizing battery life in portable devices.

3. Overcurrent Protection: The LM2745MTCX/NOPB incorporates overcurrent protection, safeguarding the circuit and connected components from excessive current.

4. Thermal Shutdown Protection: To prevent overheating, the IC includes thermal shutdown protection, which automatically shuts down the device when the temperature exceeds a certain threshold.

Advantages and Disadvantages

Advantages: - Adjustable output voltage allows for versatile applications. - High efficiency reduces power consumption. - Overcurrent and thermal shutdown protection enhance reliability and safety.

Disadvantages: - Limited maximum output current of 1A may not be suitable for high-power applications. - Dropout voltage of 200mV at 500mA may affect performance in low voltage scenarios.

Working Principles

The LM2745MTCX/NOPB operates as a linear voltage regulator. It regulates the output voltage by comparing it to a reference voltage and adjusting the internal pass transistor accordingly. The feedback pin (FB) is used to set the desired output voltage, while the enable pin (EN) controls the on/off state of the regulator.

When the input voltage (VIN) is within the specified range, the IC maintains a stable output voltage by adjusting the pass transistor's resistance. If the output current exceeds the maximum limit or the temperature rises above the threshold, the overcurrent and thermal shutdown protection mechanisms are triggered, ensuring the safety of the circuit.

Detailed Application Field Plans

The LM2745MTCX/NOPB can be used in various applications, including but not limited to: - Battery-powered devices - Portable electronic devices - IoT devices - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LM2745MTCX/NOPB include: - LM1117-ADJ - LT1086-ADJ - TPS7A4700-ADJ - ADP3339-ADJ - MAX603-ADJ

These alternatives provide adjustable output voltage, high efficiency, and similar protection features. However, it is recommended to review the datasheets of each model to ensure compatibility with specific application requirements.

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