MIC2549A-1YN

Product Overview

Category

MIC2549A-1YN belongs to the category of integrated circuits (ICs).

Use

The MIC2549A-1YN is primarily used as a power distribution switch.

Characteristics

• The MIC2549A-1YN is a high-side load switch with an integrated power MOSFET.
• It operates in a wide input voltage range, making it suitable for various applications.
• The device offers low quiescent current and high current limit capabilities.
• It provides protection features such as thermal shutdown and overcurrent protection.
• The MIC2549A-1YN is designed to be compatible with both 3.3V and 5V logic levels.

Package

The MIC2549A-1YN is available in a small outline package (SOP) with eight pins.

Essence

The essence of MIC2549A-1YN lies in its ability to provide efficient power distribution and protection in electronic systems.

Packaging/Quantity

The MIC2549A-1YN is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Quiescent Current: 20µA (typical)
• Current Limit: 500mA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MIC2549A-1YN has the following pin configuration:

1. EN (Enable): Logic input pin to enable/disable the device.
2. IN (Input): Power supply input pin.
3. GND (Ground): Ground reference pin.
4. PG (Power Good): Output pin indicating the status of the load.
5. FB (Feedback): Feedback pin for current limit setting.
6. SS (Soft-Start): Soft-start capacitor connection pin.
7. OUT (Output): Power supply output pin.
8. VCC: Supply voltage input pin for internal circuitry.

Functional Features

• Enable/Disable Control: The EN pin allows the device to be easily enabled or disabled.
• Power Good Indicator: The PG pin provides an output signal indicating the status of the load.
• Overcurrent Protection: The MIC2549A-1YN incorporates overcurrent protection to safeguard the load and the device itself.
• Thermal Shutdown: In case of excessive temperature, the device activates thermal shutdown to prevent damage.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Low quiescent current minimizes power consumption.
• High current limit capability enables the handling of demanding loads.
• Integrated protection features enhance system reliability.
• Compatibility with different logic levels simplifies design integration.

Disadvantages

• Limited maximum current limit may not be suitable for high-power applications.
• The small outline package may require additional measures for heat dissipation in certain scenarios.

Working Principles

The MIC2549A-1YN operates as a high-side load switch by controlling the flow of current from the input to the output. When the enable pin (EN) is activated, the internal power MOSFET turns on, allowing current to pass through. The feedback pin (FB) sets the current limit, ensuring that it does not exceed the specified value. The device continuously monitors the load and protects against overcurrent and excessive temperature conditions.

Detailed Application Field Plans

The MIC2549A-1YN finds applications in various fields, including but not limited to:

1. Portable electronic devices: Enables efficient power distribution and protection in battery-powered devices such as smartphones, tablets, and portable gaming consoles.
2. Industrial automation: Suitable for controlling power supply to sensors, actuators, and other components in industrial automation systems.
3. Automotive electronics: Used for power management in automotive applications, including infotainment systems, lighting controls, and motor control modules.
4. IoT devices: Provides power switching capabilities in Internet of Things (IoT) devices, ensuring efficient energy usage and protection against faults.

Detailed and Complete Alternative Models

1. MIC2549A-2YN: Similar to MIC2549A-1YN but with a higher current limit of 1A.
2. MIC2549A-3YN: Offers the same features as MIC2549A-1YN but with an extended temperature range of -40°C to +125°C.
3. MIC2549A-4YN: Provides enhanced ESD protection compared to MIC2549A-1YN, making it suitable for more demanding environments.

These alternative models offer similar functionality to the MIC2549A-1YN while catering to specific requirements or preferences.

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