MIC2548-1BMM

Product Overview

Category

MIC2548-1BMM belongs to the category of integrated circuits (ICs).

Use

The MIC2548-1BMM is commonly used as a power distribution switch in various electronic devices.

Characteristics

• The MIC2548-1BMM is a high-side load switch with an integrated power MOSFET.
• It operates at a wide input voltage range, making it suitable for different applications.
• The device offers low quiescent current and high current limit capabilities.
• It provides overcurrent protection and thermal shutdown features.
• The MIC2548-1BMM is designed to be compact and efficient.

Package

The MIC2548-1BMM is available in a miniature 8-pin MSOP package.

Essence

The essence of the MIC2548-1BMM lies in its ability to control power distribution efficiently and protect against overcurrent and thermal issues.

Packaging/Quantity

The MIC2548-1BMM is typically packaged in reels or tubes. The quantity per reel or tube may vary depending on the manufacturer's specifications.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Quiescent Current: 20µA (typical)
• Current Limit: 1.5A (typical)
• Operating Temperature Range: -40°C to +85°C
• Power Dissipation: 0.6W (max)

Detailed Pin Configuration

The MIC2548-1BMM has the following pin configuration:

1. EN (Enable): Controls the ON/OFF state of the load switch.
2. IN (Input): Connects to the input voltage source.
3. GND (Ground): Common ground reference.
4. PG (Power Good): Indicates the status of the output voltage.
5. FB (Feedback): Provides feedback for current limit and thermal shutdown.
6. OUT (Output): Connects to the load.
7. SS (Soft-Start): Controls the rise time of the output voltage during startup.
8. VCC (Supply Voltage): Powers the internal circuitry.

Functional Features

• Enable/Disable Control: The EN pin allows the user to turn the load switch ON or OFF as required.
• Overcurrent Protection: The MIC2548-1BMM incorporates a current limit feature that protects against excessive load currents.
• Thermal Shutdown: In case of high temperature, the device automatically shuts down to prevent damage.
• Power Good Indicator: The PG pin provides an indication of the output voltage status.
• Soft-Start Functionality: The SS pin enables a controlled rise time for the output voltage during startup, preventing voltage spikes.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Low quiescent current minimizes power consumption.
• Integrated overcurrent protection and thermal shutdown enhance system reliability.
• Compact package size saves board space.
• Soft-start functionality prevents voltage spikes during startup.

Disadvantages

• Limited maximum current limit of 1.5A may not be suitable for high-power applications.
• Operating temperature range may restrict usage in extreme environments.

Working Principles

The MIC2548-1BMM operates as a high-side load switch by controlling the connection between the input voltage source and the load. When the EN pin is activated, the internal power MOSFET turns ON, allowing current to flow from the input to the load. The device continuously monitors the load current and temperature. If the load current exceeds the set limit or the temperature rises above the threshold, the MIC2548-1BMM triggers the appropriate protection mechanism, such as current limiting or thermal shutdown.

Detailed Application Field Plans

The MIC2548-1BMM finds applications in various electronic devices, including but not limited to: - Portable consumer electronics - Battery-powered devices - Industrial control systems - Automotive electronics - IoT devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MIC2548-1BMM include: - TPS22920 - Texas Instruments - FPF2700 - Fairchild Semiconductor - AP22802 - Diodes Incorporated - NCP380 - ON Semiconductor - AOZ1282CI - Alpha & Omega Semiconductor

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

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