REF2940AIDBZTG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics:
  • Low dropout voltage
  • High accuracy
  • Low quiescent current
• Package: SOT-23
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 1.2V to 3.6V
• Dropout Voltage: 300mV at 1A
• Quiescent Current: 45µA
• Line Regulation: 0.02%/V
• Load Regulation: 0.04%/mA
• Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The REF2940AIDBZTG4 has the following pin configuration:

1. GND (Ground)
2. VOUT (Output Voltage)
3. VIN (Input Voltage)

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• High accuracy provides precise output voltage regulation.
• Low quiescent current minimizes power consumption in standby or low-load conditions.

Advantages

• Wide input voltage range allows flexibility in various applications.
• Excellent line and load regulation ensures stable output voltage under varying conditions.
• Small package size (SOT-23) enables space-saving designs.
• Low dropout voltage reduces power dissipation and extends battery life.

Disadvantages

• Limited output voltage range may not be suitable for all applications requiring higher voltages.
• Higher quiescent current compared to some alternative models may impact power efficiency in ultra-low-power devices.

Working Principles

The REF2940AIDBZTG4 is a linear voltage regulator that maintains a constant output voltage regardless of input voltage fluctuations. It utilizes a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The dropout voltage is minimized, allowing efficient regulation even when the input voltage is close to the desired output voltage.

Detailed Application Field Plans

The REF2940AIDBZTG4 is commonly used in various applications, including:

1. Battery-powered devices: Provides stable voltage supply for portable electronics such as smartphones, tablets, and wearables.
2. Industrial equipment: Ensures reliable voltage regulation in control systems, sensors, and actuators.
3. Automotive electronics: Supports voltage regulation in automotive modules, infotainment systems, and lighting applications.
4. Communication systems: Maintains consistent voltage levels in routers, switches, and wireless access points.

Detailed and Complete Alternative Models

1. LM1117-3.3: Similar low dropout voltage regulator with adjustable output voltage.
2. LT1763-3.3: Low quiescent current regulator with ultra-low dropout voltage.
3. TPS79633: High-accuracy voltage regulator with low noise performance.

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