BU4245G-MTR

Product Overview

Category: Integrated Circuit (IC)

Use: The BU4245G-MTR is a specialized integrated circuit designed for use in electronic devices and systems. It serves as a voltage regulator, providing stable and regulated power supply to various components within the system.

Characteristics: - Compact size - High efficiency - Low power consumption - Wide input voltage range - Overcurrent and overtemperature protection

Package: The BU4245G-MTR is available in a small outline package (SOP) with 8 pins. This package ensures easy integration into circuit boards and provides mechanical stability.

Essence: The essence of the BU4245G-MTR lies in its ability to regulate voltage effectively, ensuring reliable and consistent power supply to connected components.

Packaging/Quantity: The BU4245G-MTR is typically packaged in reels or tubes, containing a quantity of 250 units per package.

Specifications

• Input Voltage Range: 4.5V - 18V
• Output Voltage Range: 1.2V - 15V
• Output Current: Up to 1.5A
• Quiescent Current: 50µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The BU4245G-MTR features the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VOUT: Output voltage pin
4. NC: No connection pin
5. EN: Enable pin
6. FB: Feedback pin
7. SS: Soft-start pin
8. PG: Power good pin

Functional Features

• Voltage Regulation: The BU4245G-MTR maintains a stable output voltage regardless of variations in the input voltage or load conditions.
• Overcurrent Protection: It incorporates overcurrent protection, safeguarding the connected components from excessive current flow.
• Overtemperature Protection: The IC monitors its own temperature and automatically shuts down if it exceeds a safe operating limit.
• Soft-start Function: The soft-start feature ensures a gradual increase in output voltage during power-up, preventing sudden voltage spikes.

Advantages and Disadvantages

Advantages: - Compact size allows for space-efficient integration into electronic devices. - High efficiency minimizes power loss and maximizes battery life. - Wide input voltage range enables compatibility with various power sources. - Overcurrent and overtemperature protection enhance system reliability.

Disadvantages: - Limited output current capacity may not be suitable for high-power applications. - Requires external components (such as capacitors) for optimal performance.

Working Principles

The BU4245G-MTR operates based on the principle of feedback control. It compares the actual output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage. This is achieved through a combination of switching and regulation techniques.

Detailed Application Field Plans

The BU4245G-MTR finds application in a wide range of electronic devices and systems, including but not limited to: - Mobile phones - Tablets - Portable gaming consoles - Digital cameras - Portable audio players - IoT devices

Detailed and Complete Alternative Models

1. LM317: A popular linear voltage regulator offering adjustable output voltage and higher current capacity.
2. LT1084: A low dropout (LDO) voltage regulator with excellent line and load regulation characteristics.
3. TPS5430: A synchronous buck converter providing high efficiency and compact size.

These alternative models offer similar functionality to the BU4245G-MTR and can be considered based on specific requirements and design constraints.

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