SC2901DR2G

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: Low Dropout, Adjustable Output, High Current Capability
• Package: TO-252-3 (DPAK)
• Essence: Linear Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.25V to 5.5V
• Dropout Voltage: 0.4V at 500mA
• Maximum Output Current: 1A
• Line Regulation: ±0.2%
• Load Regulation: ±0.4%
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SC2901DR2G has three pins:

1. Pin 1 (IN): Input voltage pin. Connects to the power supply.
2. Pin 2 (GND): Ground pin. Connected to the system ground.
3. Pin 3 (OUT): Output voltage pin. Provides the regulated output voltage.

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output differentials.
• Adjustable output voltage provides flexibility in various applications.
• High current capability enables the regulator to handle demanding loads.
• Excellent line and load regulation ensures stable output voltage under varying conditions.
• Low quiescent current minimizes power consumption when the load is light.

Advantages and Disadvantages

Advantages: - Low dropout voltage improves efficiency. - Adjustable output voltage suits a wide range of applications. - High current capability handles demanding loads effectively. - Excellent line and load regulation ensures stable output. - Low quiescent current reduces power consumption.

Disadvantages: - Limited input voltage range (2.5V to 6.0V). - Maximum output current limited to 1A.

Working Principles

The SC2901DR2G is a linear regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage from the output, adjusting the pass transistor accordingly to maintain a stable output voltage. The dropout voltage is minimized by using a low resistance pass element.

Detailed Application Field Plans

The SC2901DR2G is commonly used in various applications, including but not limited to:

1. Battery-powered devices: Provides regulated voltage for portable electronics, such as smartphones, tablets, and handheld gaming consoles.
2. Automotive systems: Used in automotive electronics to regulate voltage for sensors, actuators, and control modules.
3. Industrial equipment: Ensures stable voltage supply for industrial automation systems, motor drives, and control circuits.
4. Communication devices: Regulates voltage for routers, switches, and other network equipment.
5. Consumer electronics: Used in audio/video equipment, set-top boxes, and home appliances.

Detailed and Complete Alternative Models

Some alternative models to the SC2901DR2G include:

1. LM1117-ADJ: Adjustable voltage regulator with similar characteristics.
2. LT1084CP-ADJ: High current adjustable linear regulator.
3. TPS7A4700: Low dropout voltage regulator with adjustable output.
4. MAX6037: Ultra-low quiescent current linear regulator.
5. LP2950: Low-power voltage regulator with fixed output options.

These alternatives offer similar functionality and can be considered based on specific application requirements.

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