MIC3975-2.5YMM

Product Overview

Category

MIC3975-2.5YMM belongs to the category of voltage regulators.

Use

This product is used to regulate and stabilize voltage levels in electronic circuits.

Characteristics

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 2.5V
• Maximum Output Current: 1A
• Dropout Voltage: 300mV
• Low Quiescent Current: 120µA
• Thermal Shutdown Protection
• Short Circuit Protection
• Small Package Size: SOT-23-5

Packaging/Quantity

MIC3975-2.5YMM is available in a small SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: 4.5V to 16V
• Output Voltage: 2.5V
• Output Current: Up to 1A
• Dropout Voltage: 300mV (typical)
• Quiescent Current: 120µA (typical)
• Line Regulation: ±0.2% (typical)
• Load Regulation: ±0.4% (typical)
• Ripple Rejection: 70dB (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

MIC3975-2.5YMM has the following pin configuration:

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Pin 1: VIN (Input Voltage) Pin 2: GND (Ground) Pin 3: EN (Enable) Pin 4: BYP (Bypass Capacitor) Pin 5: VOUT (Output Voltage)

Functional Features

1. Wide Input Voltage Range: The MIC3975-2.5YMM can accept input voltages ranging from 4.5V to 16V, making it suitable for a variety of applications.
2. Low Dropout Voltage: With a dropout voltage of only 300mV, this regulator can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
3. Low Quiescent Current: The quiescent current of 120µA ensures minimal power consumption when the regulator is in standby or idle mode.
4. Thermal Shutdown Protection: The device incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
5. Short Circuit Protection: The regulator has built-in short circuit protection, safeguarding the circuit and the regulator itself from damage.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile use.
• Low dropout voltage ensures stable output even with small input-output differentials.
• Low quiescent current minimizes power consumption.
• Thermal shutdown and short circuit protection enhance reliability.

Disadvantages

• Limited maximum output current of 1A may not be sufficient for high-power applications.
• SOT-23-5 package may require additional space on the PCB compared to smaller packages.

Working Principles

MIC3975-2.5YMM is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage. Any difference between the two voltages is amplified and used to control the pass transistor, adjusting its resistance to maintain a constant output voltage.

Application Field Plans

The MIC3975-2.5YMM is commonly used in various electronic devices and systems, including:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and portable audio players benefit from the low quiescent current and wide input voltage range of this regulator.
2. Industrial control systems: The stability and protection features make it suitable for use in industrial control systems, ensuring reliable operation even in harsh environments.
3. Automotive electronics: The regulator can be used in automotive applications such as infotainment systems, lighting controls, and sensors, where a stable and regulated power supply is essential.

Alternative Models

1. LM1117-2.5: This voltage regulator offers similar specifications and pin configuration to the MIC3975-2.5YMM.
2. LT1763-2.5: Another alternative with comparable characteristics and pinout.
3. TPS79625: This Texas Instruments regulator provides a 2.5V output with low dropout voltage and high accuracy.

These alternative models can be considered based on specific application requirements and availability.

In conclusion, the MIC3975-2.5YMM is a voltage regulator that offers a wide input voltage range, low dropout voltage, and low quiescent current. It provides thermal shutdown and short circuit protection, making it suitable for various electronic applications. However, its limited maximum output current and package size