IR3843WMTR1PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Current limit protection - Over-temperature protection

Package: Surface Mount Technology (SMT)

Essence: The IR3843WMTR1PBF is a voltage regulator IC designed for high-efficiency power conversion applications.

Packaging/Quantity: The IR3843WMTR1PBF is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: 0.8V to 55V
• Maximum Output Current: 3A
• Switching Frequency: Up to 1MHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The IR3843WMTR1PBF has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for output voltage regulation
4. COMP: Compensation pin for stability control
5. SS/TR: Soft-start/Tracking pin for controlling start-up behavior
6. EN: Enable pin for turning the device on/off
7. VCC: Supply voltage pin for internal circuitry
8. SW: Switching pin for connecting the inductor and output capacitor

Functional Features

• High Efficiency: The IR3843WMTR1PBF utilizes advanced switching techniques to achieve high efficiency in power conversion.
• Wide Input Voltage Range: It can operate with input voltages ranging from 4.5V to 60V, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted within a wide range of 0.8V to 55V, providing flexibility in power supply design.
• Current Limit Protection: The IC incorporates current limit protection to prevent excessive current flow and protect the circuit components.
• Over-Temperature Protection: It includes over-temperature protection to safeguard against thermal damage.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power dissipation and improved energy savings. - Wide input voltage range allows for compatibility with different power sources. - Adjustable output voltage provides versatility in meeting specific requirements. - Current limit protection enhances system reliability. - Over-temperature protection prevents damage due to excessive heat.

Disadvantages: - Limited maximum output current of 3A may not be suitable for high-power applications. - Switching frequency up to 1MHz may introduce electromagnetic interference in sensitive environments.

Working Principles

The IR3843WMTR1PBF operates based on a switching regulator topology. It uses a combination of high-frequency switching and energy storage elements (inductor and capacitor) to efficiently convert the input voltage to the desired output voltage. The control circuitry adjusts the duty cycle of the switching signal to regulate the output voltage. By rapidly switching the power transistor, it minimizes power losses and maximizes efficiency.

Detailed Application Field Plans

The IR3843WMTR1PBF is commonly used in various applications, including:

1. Power supplies for industrial equipment
2. Automotive electronics
3. Telecommunications systems
4. LED lighting
5. Battery charging circuits
6. Distributed power architectures
7. Point-of-load regulators

Detailed and Complete Alternative Models

1. IR3842WMTR1PBF: Similar to IR3843WMTR1PBF but with a lower maximum output current of 2A.
2. IR3844WMTR1PBF: Similar to IR3843WMTR1PBF but with a higher maximum output current of 4A.
3. IR3845WMTR1PBF: Similar to IR3843WMTR1PBF but with a higher maximum output current of 5A.

These alternative models provide options for different power requirements while maintaining similar features and characteristics.

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