MIC4420CM

Product Overview

• Category: Integrated Circuit
• Use: Power MOSFET Driver
• Characteristics: High-Speed, Low-Side, Non-Inverting
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• Essence: Efficiently drives power MOSFETs in various applications
• Packaging/Quantity: Available in reels of 2500 units

Specifications

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

Pin Configuration

The MIC4420CM features an 8-pin SOIC package with the following pin configuration:

1. VDD: Supply voltage input
2. IN: Input control signal
3. LO: Low-side gate driver output
4. COM: Ground reference for logic inputs
5. HO: High-side gate driver output
6. VS: Bootstrap supply voltage
7. VB: Bootstrap capacitor connection
8. VSS: Negative supply voltage input

Functional Features

• High-speed switching capability
• Non-inverting driver
• Low-side drive capability
• Wide operating voltage range
• Internal bootstrap diode
• Under-voltage lockout protection
• Thermal shutdown protection

Advantages and Disadvantages

Advantages: - Fast switching speed improves system efficiency - Non-inverting driver simplifies circuit design - Wide operating voltage range allows flexibility in different applications - Internal bootstrap diode reduces external component count - Protection features enhance reliability

Disadvantages: - Limited output current compared to some other drivers - Requires an external bootstrap capacitor for proper operation

Working Principles

The MIC4420CM is designed to efficiently drive power MOSFETs in various applications. It operates by receiving an input control signal (IN) and generating complementary output signals (LO and HO) to drive the low-side and high-side gates of a power MOSFET, respectively. The driver's internal bootstrap diode (VB) allows it to generate a voltage higher than the supply voltage (VS) to drive the high-side gate.

The driver incorporates under-voltage lockout protection, which disables the outputs when the supply voltage falls below a certain threshold. Additionally, it features thermal shutdown protection, which prevents damage due to excessive temperature.

Detailed Application Field Plans

The MIC4420CM is commonly used in the following application fields:

1. Motor Control: Provides efficient switching for motor drive circuits, enabling precise control of motor speed and direction.
2. Power Supplies: Facilitates fast switching in power supply circuits, improving overall efficiency and reducing power losses.
3. LED Lighting: Drives power MOSFETs in LED lighting applications, ensuring accurate and reliable switching for optimal brightness control.
4. Switching Converters: Enables high-speed switching in DC-DC converters, enhancing conversion efficiency and reducing size and weight.

Detailed and Complete Alternative Models

1. IR2110: High and low-side driver with similar specifications and features.
2. TC4420: Non-inverting driver with comparable performance characteristics.
3. HIP4081A: High-speed, non-inverting driver with additional protection features.

These alternative models offer similar functionality and can be considered as substitutes for the MIC4420CM in various applications.

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