MIC4428BMM

Product Overview

Category: Integrated Circuit (IC)

Use: The MIC4428BMM is a high-speed, low-side MOSFET driver IC. It is designed to drive power MOSFETs in various applications such as motor control, power supplies, and inverters.

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

Package: Miniature 8-pin MSOP (Mini Small Outline Package)

Essence: The MIC4428BMM is an essential component for driving power MOSFETs efficiently and reliably in various electronic systems.

Packaging/Quantity: The MIC4428BMM is available in tape and reel packaging, with 3,000 units per reel.

Specifications

• Supply Voltage Range: 4.5V to 18V
• Output Current: 1.5A (peak)
• Input Threshold Voltage: 2.5V (typical)
• Propagation Delay: 25ns (typical)
• Rise/Fall Time: 15ns (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC4428BMM has the following pin configuration:

```

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| | --| VDD GND |-- Pin 1: Supply Voltage (VDD) --| IN LO |-- Pin 2: Input Signal (IN) --| HO LI |-- Pin 3: Output Signal (HO) --| VB VS |-- Pin 4: Bootstrap Voltage (VB) --| HB HS |-- Pin 5: High-Side Gate Drive (HB) --| LB LS |-- Pin 6: Low-Side Gate Drive (LB) --| NC NC |-- Pin 7: No Connection (NC) --| NC NC |-- Pin 8: No Connection (NC) |___________| ```

Functional Features

• High-speed switching: The MIC4428BMM enables fast switching of power MOSFETs, reducing power losses and improving overall system efficiency.
• Low input/output capacitance: This feature minimizes the charging and discharging time of the MOSFET, resulting in reduced power dissipation.
• Wide operating voltage range: The IC can operate within a wide voltage range, making it suitable for various applications.
• Low quiescent current: The MIC4428BMM consumes minimal current when not actively driving the MOSFET, conserving power and reducing heat generation.
• Thermal shutdown protection: The IC incorporates thermal shutdown circuitry to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - High-speed switching capability improves system efficiency. - Low input/output capacitance reduces power dissipation. - Wide operating voltage range allows for versatile applications. - Low quiescent current minimizes power consumption. - Thermal shutdown protection ensures device reliability.

Disadvantages: - Limited output current may restrict usage in high-power applications. - Requires external bootstrap capacitor for proper operation.

Working Principles

The MIC4428BMM operates by receiving an input signal (IN) and generating corresponding gate drive signals (HO and LO) to control the power MOSFET. When the input signal is high, the high-side gate drive (HB) is activated, turning on the MOSFET. Conversely, when the input signal is low, the low-side gate drive (LB) is activated, turning off the MOSFET. This switching action allows efficient control of the power MOSFET in various applications.

Detailed Application Field Plans

The MIC4428BMM is widely used in the following applications:

1. Motor Control: The IC provides precise and efficient control of motor speed and direction in applications such as robotics, industrial automation, and electric vehicles.
2. Power Supplies: It is utilized in power supply circuits to regulate voltage levels and improve overall power conversion efficiency.
3. Inverters: The IC enables the creation of high-frequency inverters for applications like solar power systems, uninterruptible power supplies (UPS), and electric vehicle inverters.

Detailed and Complete Alternative Models

1. IR2110: A high-voltage, high-speed MOSFET driver IC with similar features and specifications.
2. TC4427: A low-side MOSFET driver IC suitable for low-power applications.
3. MAX4428: A high-speed, dual MOSFET driver IC with enhanced protection features.

These alternative models can be considered based on specific application requirements and design constraints.

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