BU4917F-TR

Product Overview

Category: Integrated Circuit (IC)

Use: The BU4917F-TR is a versatile integrated circuit primarily used for voltage regulation and power management in electronic devices. It provides stable and regulated power supply to various components within a system.

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

Package: The BU4917F-TR is available in a compact surface-mount package, making it suitable for space-constrained applications.

Essence: The essence of the BU4917F-TR lies in its ability to efficiently regulate voltage and provide reliable power management, ensuring optimal performance and protection for electronic devices.

Packaging/Quantity: The BU4917F-TR is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs, usually ranging from 100 to 1000 units.

Specifications

• Input Voltage Range: 4.5V - 40V
• Output Voltage Range: 1.2V - 37V
• Maximum Output Current: 1.5A
• Quiescent Current: 5mA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The BU4917F-TR features a standard 8-pin configuration:

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| | --| Vout Vin|-- --| GND EN |-- --| FB NC |-- |___________| ```

Functional Features

1. Voltage Regulation: The BU4917F-TR ensures a stable output voltage regardless of variations in the input voltage.
2. Overcurrent Protection: It incorporates overcurrent protection to safeguard connected devices from excessive current flow.
3. Thermal Shutdown Protection: The IC includes a thermal shutdown feature that prevents overheating by shutting down the device when the temperature exceeds a certain threshold.
4. Low Power Consumption: The BU4917F-TR minimizes power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power dissipation - Wide input voltage range allows for versatile applications - Overcurrent and thermal shutdown protection enhance system reliability - Compact package enables space-saving designs

Disadvantages: - Limited maximum output current may not be suitable for high-power applications - Lack of adjustable output voltage limits customization options

Working Principles

The BU4917F-TR operates on the principle of switching voltage regulation. It utilizes an internal control circuitry to monitor the input voltage and adjust the duty cycle of an internal switch accordingly. This regulated switching action ensures a constant output voltage despite fluctuations in the input voltage.

Detailed Application Field Plans

The BU4917F-TR finds application in various electronic devices and systems, including but not limited to: 1. Consumer electronics (e.g., smartphones, tablets, portable audio players) 2. Automotive electronics (e.g., infotainment systems, navigation devices) 3. Industrial equipment (e.g., factory automation, power supplies) 4. Communication devices (e.g., routers, modems)

Alternative Models

For those seeking alternative options, the following integrated circuits can be considered as substitutes for the BU4917F-TR: 1. LM317: A widely used linear voltage regulator with adjustable output voltage. 2. LT1084: A high-current, low-dropout voltage regulator suitable for demanding applications. 3. TPS5430: A synchronous buck converter offering high efficiency and a wide input voltage range.

These alternatives provide similar functionality and can be chosen based on specific requirements and design constraints.

In conclusion, the BU4917F-TR is a versatile integrated circuit that offers efficient voltage regulation and power management capabilities. With its compact package and various protection features, it finds application in a wide range of electronic devices across different industries.

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