LT8643SEV-2#PBF

Product Overview

Category

LT8643SEV-2#PBF belongs to the category of voltage regulators.

Use

This product is primarily used for regulating voltage in electronic circuits.

Characteristics

• High efficiency
• Wide input voltage range
• Low quiescent current
• Adjustable output voltage
• Compact package size

Package

The LT8643SEV-2#PBF comes in a small surface-mount package, making it suitable for space-constrained applications.

Essence

The essence of LT8643SEV-2#PBF lies in its ability to efficiently regulate voltage while consuming minimal power.

Packaging/Quantity

This product is typically packaged in reels or tubes and is available in various quantities depending on the manufacturer's specifications.

Specifications

• Input Voltage Range: 4.5V to 42V
• Output Voltage Range: 0.6V to 18V
• Maximum Output Current: 3A
• Switching Frequency: Up to 1MHz
• Quiescent Current: 15µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT8643SEV-2#PBF has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for adjusting the output voltage
4. SW: Switching node pin
5. SYNC: Synchronization pin for external clock input
6. VOUT: Output voltage pin

Functional Features

• Constant voltage regulation
• Overcurrent protection
• Thermal shutdown protection
• Soft-start functionality
• Adjustable switching frequency

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation
• Wide input voltage range allows for versatile applications
• Low quiescent current minimizes power consumption during standby
• Compact package size enables usage in space-constrained designs

Disadvantages

• Limited maximum output current of 3A may not be suitable for high-power applications
• Requires external components for proper operation

Working Principles

The LT8643SEV-2#PBF operates on the principle of pulse-width modulation (PWM). It uses an internal switch to rapidly turn the input voltage on and off, creating a regulated output voltage. The feedback mechanism adjusts the duty cycle of the switch to maintain the desired output voltage.

Detailed Application Field Plans

The LT8643SEV-2#PBF finds applications in various fields, including:

1. Automotive electronics: Powering infotainment systems, lighting modules, and sensors.
2. Industrial equipment: Regulating voltage for motor drives, control systems, and communication devices.
3. Telecommunications: Providing stable voltage for base stations, routers, and network switches.
4. Consumer electronics: Powering portable devices, audio amplifiers, and display panels.

Detailed and Complete Alternative Models

1. LT8643S: Similar features with a lower maximum output current of 2A.
2. LT8643: Higher maximum output current of 4A but with a larger package size.
3. LT8643L: Lower quiescent current of 10µA but with a narrower input voltage range.

These alternative models offer different trade-offs in terms of output current, package size, and input voltage range, allowing users to choose the most suitable option for their specific requirements.

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