MIC4422BM TR

Product Overview

Category: Integrated Circuit (IC)

Use: The MIC4422BM TR is a high-speed, low-side MOSFET driver designed to drive power MOSFETs in various applications. It provides a simple and efficient solution for driving MOSFETs in motor control, power supplies, and other high-current switching applications.

Characteristics: - High-speed switching capability - Low input/output capacitance - Wide operating voltage range - Low quiescent current - Short-circuit protection

Package: The MIC4422BM TR is available in a small outline package (SOIC) with 8 pins.

Essence: The essence of the MIC4422BM TR lies in its ability to provide fast and efficient switching of power MOSFETs, enabling precise control of high-current applications.

Packaging/Quantity: The MIC4422BM TR is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 4.5V to 18V
• Output Current: 9A (peak)
• Input Threshold Voltage: 1.5V (typical)
• Propagation Delay: 25ns (typical)
• Rise/Fall Time: 15ns (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC4422BM TR has the following pin configuration:

```

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| | | 1 2 3 | | | | 4 5 6 | | | | 7 8 | |_______________| ```

1. VDD: Power supply voltage input
2. IN: Input signal for controlling the MOSFET
3. GND: Ground reference
4. LO: Low-side output to drive the MOSFET gate
5. LO: Low-side output to drive the MOSFET gate
6. HO: High-side output to drive the MOSFET gate
7. HO: High-side output to drive the MOSFET gate
8. VDD: Power supply voltage input

Functional Features

• High-speed switching: The MIC4422BM TR is capable of driving power MOSFETs with fast rise and fall times, enabling efficient switching.
• Low input/output capacitance: The driver has low input and output capacitance, minimizing the impact on the overall system performance.
• Wide operating voltage range: It can operate within a wide voltage range, making it suitable for various applications.
• Short-circuit protection: The driver incorporates short-circuit protection to prevent damage to the MOSFET and the driver itself in case of a fault.

Advantages and Disadvantages

Advantages: - Fast switching capability - Low quiescent current consumption - Short-circuit protection enhances reliability - Suitable for high-current applications

Disadvantages: - Limited output current (9A peak) - Requires external components for proper operation

Working Principles

The MIC4422BM TR operates by receiving an input signal (IN) that controls the state of the MOSFET. When the input signal is high, the driver outputs a high voltage on the corresponding HO pin, turning on the MOSFET. Conversely, when the input signal is low, the driver outputs a low voltage on the corresponding LO pin, turning off the MOSFET.

The driver's internal circuitry ensures fast switching times and provides protection against short-circuits. It also features an under-voltage lockout (UVLO) function to prevent improper operation at low supply voltages.

Detailed Application Field Plans

The MIC4422BM TR is widely used in various applications, including:

1. Motor Control: The driver can be used to control the speed and direction of DC motors, stepper motors, and brushless DC motors.
2. Power Supplies: It is suitable for driving power MOSFETs in switch-mode power supplies (SMPS) and other high-current switching applications.
3. Lighting Systems: The driver can be employed in LED lighting systems to control the brightness and dimming functions.
4. Automotive Electronics: It finds application in automotive systems such as electronic fuel injection, electric power steering, and motor control for hybrid/electric vehicles.

Detailed and Complete Alternative Models

• MIC4421BM TR
• MIC4423BM TR
• MIC4424BM TR
• IR2110
• TC4420CPA
• MAX4420ESA

These alternative models offer similar functionality and can be considered as alternatives to the MIC4422BM TR based on specific requirements and availability.

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