LP3919RLX-B/NOPB

Product Overview

• Category: Voltage Regulator
• Use: Power management for electronic devices
• Characteristics: High efficiency, low dropout voltage, adjustable output voltage
• Package: 20-Lead VQFN (4x4)
• Essence: Regulates input voltage to provide a stable output voltage
• Packaging/Quantity: Tape & Reel (2500 units per reel)

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 0.8V to 3.3V
• Output Current: 1.5A
• Dropout Voltage: 200mV at 1.5A
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

1. VIN: Input voltage
2. GND: Ground
3. EN: Enable pin
4. BYP: Bypass capacitor connection
5. FB: Feedback voltage
6. VOUT: Output voltage

Functional Features

• Adjustable output voltage via external resistors
• Low dropout voltage for improved efficiency
• Thermal shutdown and current limit protection
• Small package size for space-constrained applications

Advantages and Disadvantages

Advantages

• Wide input voltage range
• Low dropout voltage
• Adjustable output voltage
• Thermal shutdown and current limit protection

Disadvantages

• Limited output current compared to some alternatives
• Sensitive to external noise due to high efficiency design

Working Principles

The LP3919RLX-B/NOPB is a voltage regulator that uses a feedback loop to maintain a stable output voltage regardless of changes in the input voltage or load. It achieves this by comparing the actual output voltage to a reference voltage and adjusting the internal circuitry to minimize any difference.

Detailed Application Field Plans

The LP3919RLX-B/NOPB is suitable for various applications requiring a stable and efficient power supply. Some specific fields include: - Portable electronic devices - Battery-powered systems - IoT devices - Wearable technology

Detailed and Complete Alternative Models

Some alternative models to consider are: 1. LM1117MPX-3.3/NOPB - Category: Voltage Regulator - Use: Power management - Characteristics: Fixed output voltage, low dropout voltage - Package: TO-220 - Output Current: 800mA

1. TPS7A4700RGWT
   • Category: LDO Voltage Regulator
   • Use: Power management for sensitive electronics
   • Characteristics: Ultra-low noise, high PSRR
   • Package: WQFN-20
   • Output Voltage Range: 1.2V to 20V

In conclusion, the LP3919RLX-B/NOPB is a versatile voltage regulator with a wide input voltage range, making it suitable for various electronic applications. Its adjustable output voltage and small package size make it an attractive choice for designers seeking flexibility and space efficiency.

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