LT8643SIV-2#PBF

Product Overview

Category

The LT8643SIV-2#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for power management applications, providing efficient and reliable voltage regulation and control.

Characteristics

• High efficiency: The LT8643SIV-2#PBF offers high conversion efficiency, minimizing power losses during voltage regulation.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for various applications.
• Compact package: The IC is available in a small and convenient package, allowing for easy integration into different systems.
• Low quiescent current: The LT8643SIV-2#PBF has low standby power consumption, enhancing energy efficiency.

Package and Quantity

The LT8643SIV-2#PBF is packaged in a compact and robust 16-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 4V to 65V
• Output Voltage Range: 0.6V to 18V
• Maximum Output Current: 5A
• Switching Frequency: Up to 1MHz
• Quiescent Current: 10µA (typical)
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT8643SIV-2#PBF features a 16-pin SOIC package with the following pin configuration:

Pin 1: VIN Pin 2: GND Pin 3: SW Pin 4: FB Pin 5: SYNC/SS Pin 6: VCC Pin 7: VCC Pin 8: VCC Pin 9: VCC Pin 10: VCC Pin 11: VCC Pin 12: VCC Pin 13: VCC Pin 14: VCC Pin 15: VCC Pin 16: VOUT

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency conversion minimizes power losses.
• Adjustable output voltage provides flexibility.
• Synchronization capability enables noise reduction and system integration.
• Overcurrent and overvoltage protection ensure safe operation.

Advantages

• High efficiency results in reduced power consumption and heat generation.
• Compact package facilitates space-saving integration.
• Wide input voltage range accommodates various power sources.
• Adjustable output voltage suits different load requirements.
• Synchronization capability enhances system performance.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Higher cost compared to some alternative models.
• Requires careful thermal management due to potential heat dissipation.

Working Principles

The LT8643SIV-2#PBF operates as a step-down (buck) switching regulator. It utilizes pulse-width modulation (PWM) techniques to efficiently convert the input voltage to the desired output voltage. The IC regulates the output voltage by adjusting the duty cycle of the switching signal, controlling the energy transfer from the input to the output.

Detailed Application Field Plans

The LT8643SIV-2#PBF finds applications in various fields, including: 1. Automotive electronics: Power management for automotive systems, such as infotainment, lighting, and sensors. 2. Industrial equipment: Voltage regulation for industrial automation, control systems, and motor drives. 3. Telecommunications: Power supply solutions for telecom infrastructure, base stations, and network equipment. 4. Renewable energy: Efficient power conversion for solar panels, wind turbines, and energy storage systems. 5. Consumer electronics: Voltage regulation for portable devices, home appliances, and audio/video equipment.

Detailed Alternative Models

For those seeking alternative options, the following models can be considered: - LT8643SIV-1#PBF: Similar to LT8643SIV-2#PBF but with a lower maximum output current of 3A. - LT8643SIV-3#PBF: Similar to LT8643SIV-2#PBF but with a higher maximum output current of 8A. - LT8643SIV-4#PBF: Similar to LT8643SIV-2#PBF but with additional features like adjustable soft-start and power good signal.

In conclusion, the LT8643SIV-2#PBF is a highly efficient and versatile power management IC suitable for various applications. Its compact package, wide input voltage range, and adjustable output voltage make it an attractive choice for designers looking for reliable voltage regulation solutions.

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