BU21009MUV-E2

Product Overview

Category: Integrated Circuit (IC)

Use: The BU21009MUV-E2 is a high-performance voltage regulator IC designed for use in various electronic devices. It provides stable and regulated power supply to ensure proper functioning of the connected components.

Characteristics: - High efficiency - Low dropout voltage - Wide input voltage range - Overcurrent protection - Thermal shutdown protection

Package: The BU21009MUV-E2 is available in a compact and industry-standard SOT-23-5 package, which allows for easy integration into different circuit designs.

Essence: This voltage regulator IC is an essential component in electronic devices that require a stable power supply. It ensures that the connected components receive the appropriate voltage levels, preventing damage due to voltage fluctuations.

Packaging/Quantity: The BU21009MUV-E2 is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Output Current: Up to 500mA
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 45μA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The BU21009MUV-E2 features a standard SOT-23-5 package with the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. EN (Enable)
4. FB (Feedback)
5. VOUT (Output Voltage)

Functional Features

• High Efficiency: The BU21009MUV-E2 offers high efficiency, minimizing power loss and maximizing battery life in portable devices.
• Overcurrent Protection: It incorporates overcurrent protection, safeguarding the connected components from excessive current flow.
• Thermal Shutdown Protection: The IC includes thermal shutdown protection, preventing overheating and potential damage to the device.
• Wide Input Voltage Range: It supports a wide input voltage range, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - High efficiency leads to improved battery life. - Overcurrent and thermal shutdown protection enhance device reliability. - Wide input voltage range allows for versatile usage.

Disadvantages: - Limited output current capacity (up to 500mA). - Dropout voltage may affect performance in low voltage applications.

Working Principles

The BU21009MUV-E2 operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB pin) with a reference voltage. Any difference between the two voltages is amplified and used to adjust the pass transistor, ensuring a stable output voltage regardless of input variations.

Detailed Application Field Plans

The BU21009MUV-E2 finds applications in various electronic devices, including but not limited to: - Mobile phones - Tablets - Portable media players - Digital cameras - Wireless communication devices

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with a fixed output voltage of 3.3V.
2. LT1763: Offers adjustable output voltage and higher output current capability.
3. TPS79633: Provides a fixed output voltage of 3.3V and low dropout voltage.

These alternative models offer similar functionality and can be considered based on specific requirements and design constraints.

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