MIC4428BN

Product Overview

Category: Integrated Circuit (IC)

Use: The MIC4428BN is a high-speed, dual MOSFET driver designed to drive two N-channel enhancement-mode MOSFETs in high-side and low-side applications. It provides a simple solution for driving power MOSFETs in various switching applications.

Characteristics: - High-speed operation - Wide supply voltage range - Low input current - High peak output current - TTL/CMOS compatible inputs - Matched propagation delay for both channels - Undervoltage lockout protection

Package: DIP-8 (Dual In-line Package 8)

Essence: The MIC4428BN is an essential component in power electronics circuits that require efficient and reliable switching of MOSFETs.

Packaging/Quantity: The MIC4428BN is typically sold in reels or tubes containing 50 units per package.

Specifications

• Supply Voltage Range: 4.5V to 18V
• Peak Output Current: 1.8A
• Input Threshold Voltage: 2.4V (typical)
• Propagation Delay: 25ns (typical)
• Rise/Fall Time: 15ns (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MIC4428BN features an 8-pin Dual In-line Package (DIP) with the following pin configuration:

___________ | | 1 | 2 3 4 | 8 |___________| | | | | | | | | 7 | 6 5 9 | 10 |___________|

1. VDD - Positive Supply Voltage
2. IN1 - Input 1
3. GND - Ground
4. LO1 - Output 1 (Low-Side)
5. HO1 - Output 1 (High-Side)
6. IN2 - Input 2
7. LO2 - Output 2 (Low-Side)
8. HO2 - Output 2 (High-Side)
9. VSS - Negative Supply Voltage
10. NC - No Connection

Functional Features

• High-Speed Operation: The MIC4428BN is capable of driving MOSFETs at high switching frequencies, making it suitable for applications requiring fast response times.
• Wide Supply Voltage Range: With a supply voltage range of 4.5V to 18V, the MIC4428BN can be used in a variety of power supply configurations.
• Low Input Current: The device consumes low input current, minimizing power losses and improving overall efficiency.
• Matched Propagation Delay: Both channels of the MIC4428BN have matched propagation delays, ensuring balanced operation in dual MOSFET driver applications.
• Undervoltage Lockout Protection: The device incorporates undervoltage lockout protection, preventing improper operation when the supply voltage falls below a certain threshold.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient switching of MOSFETs. - Wide supply voltage range allows for versatile use in different power supply configurations. - Low input current reduces power losses and improves efficiency. - Matched propagation delay ensures balanced operation in dual MOSFET driver applications. - Undervoltage lockout protection prevents improper operation during low supply voltage conditions.

Disadvantages: - Limited peak output current may not be suitable for high-power applications. - DIP package may limit space-saving options in compact designs.

Working Principles

The MIC4428BN operates by receiving input signals from a control circuit and amplifying them to drive the gate of N-channel MOSFETs. It uses a high-speed, low-resistance output stage to provide fast switching times and minimize power losses.

When an input signal is received, the MIC4428BN amplifies it and drives the corresponding MOSFET's gate voltage to turn it on or off. This allows for efficient control of power flow in various switching applications.

Detailed Application Field Plans

The MIC4428BN can be used in a wide range of applications, including but not limited to: - Motor control circuits - Switching power supplies - DC-DC converters - Inverters - LED lighting systems - Audio amplifiers - Industrial automation

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MIC4428BN include: - IR2110 - TC4427 - MAX4428 - HIP4081A - IRS21844

These alternatives may have slightly different specifications and pin configurations, so it is important to consult their respective datasheets for detailed information.

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