MIC2545A-2YN

Product Overview

Category

MIC2545A-2YN belongs to the category of integrated circuits (ICs).

Use

The MIC2545A-2YN is commonly used as a power distribution switch in various electronic devices.

Characteristics

• High efficiency
• Low quiescent current
• Overcurrent protection
• Thermal shutdown protection
• Fast response time

Package

MIC2545A-2YN is available in a small outline package (SOP) with 8 pins.

Essence

The essence of MIC2545A-2YN lies in its ability to efficiently distribute power and protect electronic devices from overcurrent and thermal damage.

Packaging/Quantity

MIC2545A-2YN 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
• Output Voltage Range: 0V to VIN
• Continuous Current Limit: 500mA
• Quiescent Current: 10µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MIC2545A-2YN has the following pin configuration:

1. EN (Enable)
2. IN (Input)
3. GND (Ground)
4. OUT (Output)
5. FB (Feedback)
6. SS (Soft-Start)
7. OC (Overcurrent)
8. TSD (Thermal Shutdown)

Functional Features

1. Enable (EN): This pin controls the ON/OFF state of the power switch.
2. Input (IN): The input voltage is supplied through this pin.
3. Ground (GND): Connected to the ground reference.
4. Output (OUT): The regulated output voltage is provided through this pin.
5. Feedback (FB): This pin is used to set the output voltage level.
6. Soft-Start (SS): Provides a controlled rise time for the output voltage during startup.
7. Overcurrent (OC): Monitors the current flowing through the power switch and triggers protection if it exceeds the limit.
8. Thermal Shutdown (TSD): Protects the device from overheating by shutting down the power switch when the temperature exceeds the threshold.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Overcurrent and thermal protection ensure the safety of connected devices.
• Fast response time prevents damage caused by sudden changes in load conditions.

Disadvantages

• Limited continuous current limit of 500mA may not be suitable for high-power applications.
• Input voltage range limited to 2.7V to 5.5V may restrict compatibility with certain systems.

Working Principles

MIC2545A-2YN operates as a power distribution switch by controlling the flow of current from the input to the output. When the enable pin (EN) is activated, the power switch turns on, allowing current to flow from the input to the output. The feedback pin (FB) sets the desired output voltage level, while the soft-start pin (SS) ensures a controlled rise time during startup.

The overcurrent pin (OC) continuously monitors the current flowing through the power switch. If the current exceeds the set limit, the overcurrent protection is triggered, disabling the power switch. Similarly, the thermal shutdown pin (TSD) monitors the temperature of the device. If the temperature exceeds the threshold, the thermal shutdown protection is activated, turning off the power switch to prevent damage.

Detailed Application Field Plans

MIC2545A-2YN finds applications in various electronic devices, including but not limited to: - Mobile phones - Tablets - Portable media players - Digital cameras - USB-powered devices

Detailed and Complete Alternative Models

1. MIC2544A-2YN: Similar to MIC2545A-2YN with a lower continuous current limit of 300mA.
2. MIC2546A-2YN: Similar to MIC2545A-2YN with a higher continuous current limit of 1A.

These alternative models provide options for different current requirements in power distribution applications.

In conclusion, the MIC2545A-2YN is an integrated circuit power distribution switch that offers high efficiency, overcurrent protection, thermal shutdown protection, and fast response time. It finds applications in various electronic devices and has alternative models available to cater to different current requirements.