NJU7211U12

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics:
  • Low dropout voltage
  • High output voltage accuracy
  • Low quiescent current
  • Thermal shutdown protection
• Package: SOP-8
• Essence: Linear regulator
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.2V to 15V
• Dropout Voltage: 200mV at 100mA
• Output Current: 150mA
• Quiescent Current: 50µA
• Line Regulation: ±0.05%
• Load Regulation: ±0.1%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NJU7211U12 has a SOP-8 package with the following pin configuration:

1. Vout (Output Voltage)
2. GND (Ground)
3. Vin (Input Voltage)
4. NC (No Connection)
5. NC (No Connection)
6. NC (No Connection)
7. NC (No Connection)
8. EN (Enable)

Functional Features

• Low dropout voltage ensures efficient power conversion.
• High output voltage accuracy provides stable and precise voltage regulation.
• Low quiescent current minimizes power consumption in standby mode.
• Thermal shutdown protection prevents overheating and damage to the IC.

Advantages and Disadvantages

Advantages: - Low dropout voltage allows for use in low input voltage applications. - High output voltage accuracy ensures reliable performance. - Low quiescent current extends battery life in portable devices. - Thermal shutdown protection enhances safety and reliability.

Disadvantages: - Limited output current of 150mA may not be suitable for high-power applications. - SOP-8 package may require additional space on the PCB.

Working Principles

The NJU7211U12 is a linear regulator that regulates the output voltage by dissipating excess power as heat. It uses a feedback mechanism to compare the output voltage with a reference voltage and adjusts the pass transistor accordingly. This ensures a stable output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The NJU7211U12 is commonly used in various electronic devices, including:

1. Battery-powered devices: Provides regulated voltage for microcontrollers, sensors, and other low-power components.
2. Consumer electronics: Used in audio/video equipment, portable media players, and digital cameras.
3. Automotive applications: Regulates voltage for infotainment systems, lighting controls, and dashboard displays.
4. Industrial equipment: Ensures stable voltage supply for control systems, sensors, and actuators.

Detailed and Complete Alternative Models

1. LM1117: Similar voltage regulator with higher output current capability.
2. LT1763: Low dropout voltage regulator with adjustable output voltage.
3. TPS7A47: Ultra-low noise regulator suitable for sensitive analog circuits.
4. ADP3339: High-accuracy voltage regulator with wide input voltage range.

(Note: The above list is not exhaustive and serves as an example of alternative models.)

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