LP3972SQ-A413/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High efficiency, low power consumption
• Package: 20-WQFN (4x4)
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to 3.6V
• Output Current: Up to 1A
• Quiescent Current: 30µA (typical)
• Dropout Voltage: 200mV at 1A (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LP3972SQ-A413/NOPB has a 20-pin WQFN package with the following pin configuration:

1. VIN: Input voltage
2. EN: Enable pin
3. PG: Power good indicator
4. VOUT: Output voltage
5. GND: Ground
6. FB: Feedback pin
7. BST: Boost capacitor connection
8. SW: Switching node
9. AGND: Analog ground
10. NC: No connect
11. NC: No connect
12. NC: No connect
13. NC: No connect
14. NC: No connect
15. NC: No connect
16. NC: No connect
17. NC: No connect
18. NC: No connect
19. NC: No connect
20. NC: No connect

Functional Features

• High efficiency voltage regulation
• Low dropout voltage
• Overcurrent and thermal protection
• Power good indicator for output voltage monitoring
• Enable pin for easy control of power supply

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption
• Wide input voltage range allows for versatile applications
• Power good indicator ensures reliable operation
• Enable pin provides flexibility in power management

Disadvantages

• Limited output current capacity (up to 1A)
• Dropout voltage may affect performance in low input voltage scenarios

Working Principles

The LP3972SQ-A413/NOPB is a voltage regulator IC that efficiently converts an input voltage within the range of 2.7V to 5.5V to a regulated output voltage between 0.8V and 3.6V. It utilizes a feedback mechanism to maintain the desired output voltage, while providing protection against overcurrent and thermal conditions. The enable pin allows for easy control of the power supply, and the power good indicator ensures proper functioning of the output voltage.

Detailed Application Field Plans

The LP3972SQ-A413/NOPB is commonly used in various electronic devices and systems where efficient power management is crucial. Some application fields include:

1. Mobile devices: Smartphones, tablets, portable media players
2. Wearable technology: Smartwatches, fitness trackers
3. IoT devices: Sensors, wireless modules
4. Consumer electronics: Digital cameras, gaming consoles
5. Industrial equipment: Measurement instruments, control systems

Detailed and Complete Alternative Models

1. LP3972SQ-B413/NOPB: Similar to LP3972SQ-A413/NOPB, but with different pin configuration
2. LP3972SQ-C413/NOPB: Higher output current capacity (up to 2A), suitable for more demanding applications
3. LP3972SQ-D413/NOPB: Lower dropout voltage, ideal for low input voltage scenarios

These alternative models provide options based on specific requirements and can be considered as alternatives to the LP3972SQ-A413/NOPB.

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