IR4426

Product Overview

Category: Integrated Circuit (IC)

Use: The IR4426 is a high-performance dual low-side driver IC designed for use in various applications that require the control of power MOSFETs or IGBTs. It provides a reliable and efficient solution for driving loads in automotive, industrial, and consumer electronics.

Characteristics: - Dual low-side driver - High current capability - Wide operating voltage range - Fast switching speed - Low power consumption

Package: The IR4426 is available in a compact and industry-standard 8-pin SOIC (Small Outline Integrated Circuit) package, which ensures easy integration into existing circuit designs.

Essence: The essence of the IR4426 lies in its ability to provide robust and precise control over power MOSFETs or IGBTs, enabling efficient switching and protection of loads in various applications.

Packaging/Quantity: The IR4426 is typically sold in reels containing 250 units per reel.

Specifications

• Supply Voltage Range: 4.5V to 20V
• Output Current: 1.5A (max)
• Operating Temperature Range: -40°C to 125°C
• Input Logic Compatibility: CMOS, TTL
• Propagation Delay Time: 100ns (typ)
• Rise/Fall Time: 25ns (typ)

Detailed Pin Configuration

The IR4426 features an 8-pin SOIC package with the following pin configuration:

1. VCC: Supply voltage input
2. IN1: Input control signal for Channel 1
3. GND: Ground reference
4. OUT1: Output for Channel 1
5. VS: High-side floating supply voltage
6. OUT2: Output for Channel 2
7. IN2: Input control signal for Channel 2
8. VBS: Bootstrap supply voltage

Functional Features

• Dual Channel Operation: The IR4426 can independently control two separate power devices, providing flexibility in driving different loads simultaneously.
• High Current Capability: With a maximum output current of 1.5A, the IC can handle high-power applications effectively.
• Fast Switching Speed: The IC offers fast rise and fall times, enabling efficient switching and reducing power losses.
• Protection Features: The IR4426 incorporates various protection mechanisms such as under-voltage lockout (UVLO) and thermal shutdown, ensuring safe operation and preventing damage to the device and load.

Advantages and Disadvantages

Advantages: - High-performance dual low-side driver - Wide operating voltage range - Compact and industry-standard package - Fast switching speed - Reliable and efficient operation

Disadvantages: - Limited to low-side driving applications only - Requires external bootstrap capacitor for proper operation

Working Principles

The IR4426 operates by receiving input control signals (IN1 and IN2) and generating corresponding output signals (OUT1 and OUT2) to drive the connected power MOSFETs or IGBTs. It utilizes a bootstrap circuit to provide the necessary gate drive voltage for the high-side power device.

Detailed Application Field Plans

The IR4426 finds extensive application in various fields, including:

1. Automotive: Used in automotive electronic systems for controlling motors, solenoids, and other power devices.
2. Industrial Automation: Employed in industrial automation equipment for motor control, robotics, and power management.
3. Consumer Electronics: Integrated into consumer electronic devices such as home appliances, gaming consoles, and audio amplifiers for efficient load control.

Detailed and Complete Alternative Models

1. IR4427: Similar to the IR4426 but with an additional enable pin for enhanced control.
2. IR2184: Dual high and low-side driver IC with integrated bootstrap functionality.
3. IRS2110: High-voltage, high-speed power MOSFET and IGBT driver with built-in protection features.

These alternative models offer similar functionalities and can be considered as suitable replacements for the IR4426 in specific applications.

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