LP3972SQE-E514

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Power Consumption
• Package: QFN (Quad Flat No-Lead)
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to 3.6V
• Maximum Output Current: 500mA
• Dropout Voltage: 200mV at 300mA
• Quiescent Current: 45µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LP3972SQE-E514 has a total of 20 pins. The pin configuration is as follows:

1. VIN: Input Voltage
2. EN: Enable Pin
3. VOUT: Output Voltage
4. GND: Ground
5. FB: Feedback Pin
6. PG: Power Good Indicator
7. NC: No Connection
8. NC: No Connection
9. NC: No Connection
10. NC: No Connection
11. NC: No Connection
12. NC: No Connection
13. NC: No Connection
14. NC: No Connection
15. NC: No Connection
16. NC: No Connection
17. NC: No Connection
18. NC: No Connection
19. NC: No Connection
20. NC: No Connection

Functional Features

• High efficiency voltage regulation
• Low power consumption
• Overcurrent protection
• Thermal shutdown protection
• Power good indicator

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption
• Wide input voltage range allows for versatile applications
• Overcurrent and thermal shutdown protection ensure device safety
• Power good indicator provides visual feedback on the output status

Disadvantages

• Limited maximum output current of 500mA may not be suitable for high-power applications
• Dropout voltage of 200mV at 300mA may affect performance in low voltage scenarios

Working Principles

The LP3972SQE-E514 is a voltage regulator IC that takes an input voltage within the range of 2.7V to 5.5V and regulates it to a desired output voltage between 0.8V and 3.6V. It achieves this by utilizing internal circuitry to maintain a stable output voltage, even when the input voltage fluctuates.

The device operates by comparing the feedback voltage (FB) with a reference voltage to determine the necessary adjustments to the output voltage. It continuously monitors the output voltage and adjusts the internal circuitry accordingly to maintain the desired voltage level.

Detailed Application Field Plans

The LP3972SQE-E514 is commonly used in various electronic devices where efficient power management is crucial. Some potential application fields include:

1. Mobile Devices: Smartphones, tablets, and portable media players can benefit from the LP3972SQE-E514's low power consumption and voltage regulation capabilities.
2. IoT Devices: Internet of Things (IoT) devices often require efficient power management due to their limited power sources. The LP3972SQE-E514 can provide stable voltage regulation in these applications.
3. Wearable Technology: Fitness trackers, smartwatches, and other wearable devices can utilize the LP3972SQE-E514 to optimize power usage and extend battery life.

Detailed and Complete Alternative Models

1. LP3972SQE-E515: Similar to LP3972SQE-E514, but with a higher maximum output current of 1A.
2. LP3972SQE-E513: Similar to LP3972SQE-E514, but with a lower dropout voltage of 100mV at 300mA.

These alternative models offer variations in output current and dropout voltage, allowing for flexibility in different application scenarios.

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