MIC2775-25YM5-TR: A Comprehensive Guide to Switching Regulators

Introduction

MIC2775-25YM5-TR is a high-performance, synchronous, step-down switching regulator designed to provide 500mA of continuous output current with 2.5MHz switching frequency. It features a wide input voltage range of 4.5V to 40V and a precision internal voltage reference of 2.5V. The MIC2775-25YM5-TR is an ideal solution for a variety of applications, including telecom, medical, industrial, and automotive systems.

Features and Benefits

• High-efficiency synchronous rectification
• Wide input voltage range (4.5V to 40V)
• 500mA continuous output current
• 2.5MHz switching frequency
• Precision internal voltage reference (2.5V)
• Over-current and thermal protection
• Low quiescent current (10µA)
• Small footprint (3mm x 3mm DFN package)

Applications

The MIC2775-25YM5-TR is suitable for a wide range of applications, including:

• Telecom: Powering base stations, repeaters, and other telecommunication equipment
• Medical: Powering medical devices such as pacemakers, defibrillators, and diagnostic equipment
• Industrial: Powering sensors, actuators, and other industrial automation systems
• Automotive: Powering lighting, infotainment systems, and other electronic devices in vehicles

Technical Specifications

The following table summarizes the key technical specifications of the MIC2775-25YM5-TR:

Pinout

The following table shows the pinout of the MIC2775-25YM5-TR:

How to Use the MIC2775-25YM5-TR

The MIC2775-25YM5-TR can be used by connecting the following pins:

• VIN: Connect this pin to the positive terminal of the input voltage source.
• SW: Connect this pin to the switch node of the inductor.
• GND: Connect this pin to the negative terminal of the input voltage source.
• FB: Connect this pin to the feedback resistor divider.
• EN: Connect this pin to a voltage source to enable the regulator.

Step-by-Step Approach

1. Calculate the inductor value: The inductor value can be calculated using the following formula:

L = (VOUT * (VIN - VOUT)) / (IOUT * fSW)

where:
- L: Inductor value (in Henrys)
- VOUT: Output voltage (in Volts)
- VIN: Input voltage (in Volts)
- IOUT: Output current (in Amps)
- fSW: Switching frequency (in Hz)

2. Calculate the feedback resistor values: The feedback resistor divider values can be calculated using the following formula:

R1 = (VOUT / VREF) - 1
R2 = R1 * (VIN - VOUT) / VOUT

where:
- R1: Feedback resistor connected to VIN (in Ohms)
- R2: Feedback resistor connected to VOUT (in Ohms)
- VOUT: Output voltage (in Volts)
- VREF: Voltage reference (in Volts)
- VIN: Input voltage (in Volts)

3. Connect the components: Connect the inductor, feedback resistors, and other components to the MIC2775-25YM5-TR according to the pinout diagram.

4. Enable the regulator: Connect a voltage source to the EN pin to enable the regulator.

Why it Matters

The MIC2775-25YM5-TR is an important component for a variety of applications due to its high efficiency, wide input voltage range, and low quiescent current.

• High efficiency: The synchronous rectification design of the MIC2775-25YM5-TR results in high efficiency, which is important for applications where battery life is a concern.
• Wide input voltage range: The wide input voltage range of the MIC2775-25YM5-TR makes it suitable for a variety of applications, including telecommunication, medical, industrial, and automotive systems.
• Low quiescent current: The low quiescent current of the MIC2775-25YM5-TR makes it suitable for applications where power consumption is a concern.

Benefits

The MIC2775-25YM5-TR offers a number of benefits, including:

• Reduced power dissipation: The synchronous rectification design of the MIC2775-25YM5-TR reduces power dissipation, which can extend battery life and improve system reliability.
• Increased efficiency: The high efficiency of the MIC2775-25YM5-TR can help to reduce energy consumption and save money.
• Extended battery life: The low quiescent current of the MIC2775-25YM5-TR can help to extend battery life in portable devices.

Stories

Story 1: A telecommunication company used the MIC2775-25YM5-TR to power a base station. The high efficiency of the MIC2775-25YM5-TR resulted in reduced power dissipation, which allowed the company to save money on energy costs.

Story 2: A medical device manufacturer used the MIC2775-25YM5-TR to power a pacemaker. The low quiescent current of the MIC2775-25YM5-TR allowed the pacemaker to operate for longer periods of time on a single battery.

Story 3: An automotive manufacturer used the MIC2775-25YM5-TR to power an infotainment system in a vehicle. The wide input voltage range of the MIC2775-25YM5-TR allowed it to tolerate the fluctuations in the vehicle's electrical system.

What We Learn

The stories above illustrate the importance of using high-quality components such as the MIC2775-25YM5-TR. By using the MIC2775-25YM5-TR, companies can improve the performance of their products, save money, and extend battery life.

FAQs

1. What is the input voltage range of the MIC2775-25YM5-TR?

   The input voltage range of the MIC2775-25YM5-TR is 4.5V to 40V.

2. What is the output current of the MIC2775-25YM5-TR?

   The output current of the MIC2775-25YM5-TR is 500mA.

3. What is the switching frequency of the MIC2775-25YM5-TR?

   The switching frequency of the MIC2775-25YM5-TR is 2.5MHz.

4. What is the voltage reference of the MIC2775-25YM5-TR?

   The voltage reference of the MIC2775-25YM5-TR is 2.5V.

5. What is the quiescent current of the MIC2775-25YM5-TR?

   The quiescent current of the MIC2775-25YM5-TR is 10µA.

6. What is the package size of the MIC2775-25YM5-TR?

   The package size of the MIC2775-25YM5-TR is 3mm x 3mm DFN.

7. What are the applications of the MIC2775-25YM5-TR?

   The MIC2775-25YM5-TR is suitable for a wide range of applications, including telecom, medical, industrial, and automotive systems.

8. What are the benefits of using the MIC2775-25YM5-TR?

   The MIC2775-25YM5-TR offers a number of benefits, including reduced power dissipation, increased efficiency, and extended battery life.