LP3971SQ-Q418/NOPB

Product Overview

• Category: Power Management IC
• Use: Voltage Regulator
• Characteristics: High efficiency, low quiescent current, small package size
• Package: 24-pin WQFN
• Essence: Efficient power management for portable electronic devices
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to 3.3V
• Output Current: Up to 400mA
• Quiescent Current: 30µA (typical)
• Switching Frequency: 2.25MHz
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The LP3971SQ-Q418/NOPB features a 24-pin WQFN package with the following pin configuration: 1. VIN 2. SW 3. PGND 4. AGND 5. EN 6. MODE 7. VSEL 8. VOUT 9. FB 10. SS/TRK 11. SS/TRK 12. SS/TRK 13. SS/TRK 14. SS/TRK 15. SS/TRK 16. SS/TRK 17. SS/TRK 18. SS/TRK 19. SS/TRK 20. SS/TRK 21. SS/TRK 22. SS/TRK 23. SS/TRK 24. SS/TRK

Functional Features

• Integrated synchronous buck regulator
• Programmable output voltage
• Power good indicator
• Soft start/tracking
• Overcurrent and thermal protection

Advantages and Disadvantages

Advantages

• High efficiency
• Low quiescent current
• Small package size
• Wide input voltage range

Disadvantages

• Limited output current compared to some alternatives
• Higher cost compared to non-synchronous regulators

Working Principles

The LP3971SQ-Q418/NOPB is a synchronous buck regulator that efficiently steps down the input voltage to a lower output voltage. It uses a pulse-width modulation (PWM) control scheme to regulate the output voltage and maintain high efficiency across varying load conditions.

Detailed Application Field Plans

The LP3971SQ-Q418/NOPB is well-suited for various portable electronic devices such as smartphones, tablets, portable media players, and handheld gaming consoles. Its small package size and efficient power management make it ideal for battery-powered applications where space and power consumption are critical factors.

Detailed and Complete Alternative Models

Some alternative models to the LP3971SQ-Q418/NOPB include: - LM3671 by Texas Instruments - TPS62825 by Texas Instruments - ADP125 by Analog Devices - MAX17503 by Maxim Integrated

In summary, the LP3971SQ-Q418/NOPB is a versatile power management IC designed for efficient voltage regulation in portable electronic devices. Its high efficiency, low quiescent current, and small package size make it an attractive choice for designers seeking to optimize power consumption and space utilization in their products.

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