LM3702XCTPX-308/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

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

Package: SOT-23-5

Essence: The LM3702XCTPX-308/NOPB is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The LM3702XCTPX-308/NOPB is available in a SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: 2.7V to 6V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 100mA
• Maximum Output Current: 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM3702XCTPX-308/NOPB has the following pin configuration:

1. GND (Ground)
2. EN (Enable)
3. FB (Feedback)
4. VOUT (Output Voltage)
5. VIN (Input Voltage)

Functional Features

• Low dropout voltage ensures efficient power conversion even with small input-output voltage differentials.
• High output current capability allows the IC to power a wide range of electronic devices.
• Adjustable output voltage provides flexibility in meeting specific voltage requirements.
• Thermal shutdown protection prevents the IC from overheating and damaging itself.
• Overcurrent protection safeguards the IC and connected devices from excessive current flow.

Advantages and Disadvantages

Advantages: - Low dropout voltage improves efficiency. - High output current capability enables versatile applications. - Adjustable output voltage offers flexibility. - Thermal shutdown and overcurrent protection enhance reliability.

Disadvantages: - Limited input voltage range (2.7V to 6V). - Quiescent current of 75µA may be relatively high for power-sensitive applications.

Working Principles

The LM3702XCTPX-308/NOPB operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. The feedback pin (FB) is used to set the desired output voltage, which is compared to an internal reference voltage. The enable pin (EN) controls the regulator's on/off state.

When the input voltage (VIN) is within the specified range, the IC provides a stable and regulated output voltage (VOUT) with low dropout voltage. If the temperature exceeds the threshold, the thermal shutdown protection activates, disabling the regulator until it cools down. In case of excessive current flow, the overcurrent protection kicks in to prevent damage to the IC and connected devices.

Detailed Application Field Plans

The LM3702XCTPX-308/NOPB is suitable for various applications that require a stable and regulated output voltage. Some potential application fields include:

1. Battery-powered devices: The IC can efficiently regulate the battery voltage to power portable electronics such as smartphones, tablets, and wearable devices.

2. Industrial automation: It can be used in control systems, sensors, and actuators to provide a reliable and stable power source.

3. Automotive electronics: The IC can regulate the voltage for automotive components like infotainment systems, lighting modules, and engine control units.

4. IoT devices: It is well-suited for powering Internet of Things (IoT) devices, including smart home devices, environmental sensors, and wireless communication modules.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with a wide input voltage range and high output current capability.
2. LM1117: Fixed-output voltage regulator available in various voltage options, suitable for low-power applications.
3. LT1084: Adjustable linear voltage regulator with low dropout voltage and high output current capability.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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