LP3952RL/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 and short-circuit protection

Package: TO-263-5 (D²PAK)

Essence: The LP3952RL/NOPB is a voltage regulator IC designed to provide a stable output voltage for various electronic devices.

Packaging/Quantity: The LP3952RL/NOPB is available in tape and reel packaging, with 250 units per reel.

Specifications

• Input Voltage Range: 2.5V to 7V
• Output Voltage Range: 0.8V to 5.5V
• Dropout Voltage: 200mV at 1A
• Output Current: Up to 1.5A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LP3952RL/NOPB has the following pin configuration:

```

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| | --| VIN VOUT|-- --| GND EN |-- --| FB PG |-- |___________| ```

• VIN: Input voltage pin
• VOUT: Output voltage pin
• GND: Ground pin
• EN: Enable pin
• FB: Feedback pin
• PG: Power good indicator pin

Functional Features

1. Low Dropout Voltage: The LP3952RL/NOPB exhibits a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
2. High Output Current Capability: With a maximum output current of 1.5A, this voltage regulator can power a wide range of electronic devices.
3. Adjustable Output Voltage: The output voltage can be adjusted within the range of 0.8V to 5.5V, providing flexibility for different applications.
4. Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, preventing damage due to excessive heat.
5. Overcurrent and Short-Circuit Protection: The LP3952RL/NOPB includes overcurrent and short-circuit protection mechanisms, safeguarding both the regulator and the connected devices.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation - High output current capability allows for powering various devices - Adjustable output voltage provides flexibility - Thermal shutdown and overcurrent/short-circuit protection enhance reliability

Disadvantages: - Limited input voltage range (2.5V to 7V) - Quiescent current of 75µA may not be suitable for ultra-low-power applications

Working Principles

The LP3952RL/NOPB operates as a linear voltage regulator. It takes an input voltage and regulates it to provide a stable output voltage. The feedback pin (FB) is used to set the desired output voltage, which can be adjusted using external resistors. The enable pin (EN) controls the regulator's operation, allowing it to be turned on or off as needed. The power good indicator pin (PG) provides a signal indicating when the output voltage is within the specified range.

Detailed Application Field Plans

The LP3952RL/NOPB is commonly used in various electronic devices that require a stable and regulated power supply. Some typical application fields include:

1. Mobile Devices: Smartphones, tablets, and portable media players often utilize the LP3952RL/NOPB to regulate the voltage for their internal components.
2. Wireless Communication Systems: This voltage regulator is suitable for powering RF modules, transceivers, and other wireless communication devices.
3. Industrial Control Systems: The LP3952RL/NOPB can be employed in industrial control systems to provide regulated power for sensors, actuators, and microcontrollers.
4. Automotive Electronics: In automotive applications, this IC can regulate the voltage for various components such as infotainment systems, lighting modules, and engine control units.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with similar features and capabilities.
2. LT1086: Another low dropout voltage regulator that offers high output current and adjustable output voltage.
3. LM1117: A series of low dropout voltage regulators available in different fixed output voltages.

These alternative models can be considered based on specific requirements and compatibility with the application.

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