MIC3975-3.3YMM

Product Overview

Category

MIC3975-3.3YMM belongs to the category of voltage regulators.

Use

It is primarily used to regulate voltage in electronic circuits.

Characteristics

• Input Voltage Range: 2.7V to 16V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Dropout Voltage: 300mV at 1A
• Low Quiescent Current: 120µA
• Thermal Shutdown Protection
• Short Circuit Protection
• Small Package Size: SOT-23-5

Packaging/Quantity

MIC3975-3.3YMM is available in a small SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Input Voltage Range: 2.7V to 16V
• Output Voltage: 3.3V ±2%
• Maximum Output Current: 1A
• Dropout Voltage: 300mV at 1A
• Quiescent Current: 120µA (typical)
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-23-5

Pin Configuration

MIC3975-3.3YMM has the following pin configuration:

```

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| | --| VIN GND |-- --| VOUT EN |-- |___________| ```

• VIN: Input Voltage
• GND: Ground
• VOUT: Output Voltage
• EN: Enable Pin

Functional Features

1. Wide Input Voltage Range: The MIC3975-3.3YMM can accept input voltages ranging from 2.7V to 16V, making it suitable for various applications.
2. Low Dropout Voltage: With a dropout voltage of only 300mV at 1A, this regulator can efficiently regulate the 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 during standby or idle conditions.
4. Thermal Shutdown Protection: The device incorporates thermal shutdown protection, which prevents damage due to excessive temperature.
5. Short Circuit Protection: MIC3975-3.3YMM includes short circuit protection, safeguarding the device and the connected circuitry from damage in case of a short circuit.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Low dropout voltage ensures efficient regulation.
• 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

MIC3975-3.3YMM is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage derived from the output. The pass transistor adjusts its resistance to maintain a constant output voltage, compensating for changes in the input voltage and load conditions.

Application Field Plans

MIC3975-3.3YMM finds applications in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable electronics - Industrial control systems - Automotive electronics - IoT devices

Alternative Models

Some alternative models that offer similar functionality to MIC3975-3.3YMM include: - LM1117-3.3: A popular 3.3V linear voltage regulator with a maximum output current of 800mA. - LT1763-3.3: A high-performance 3.3V linear regulator with a low dropout voltage and a maximum output current of 500mA. - TPS79633: A 3.3V low-dropout voltage regulator with a maximum output current of 1A.

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

In conclusion, MIC3975-3.3YMM is a versatile voltage regulator offering efficient regulation, low power consumption, and protection features. Its wide input voltage range and small package make it suitable for various applications in different industries. However, designers should consider the maximum output current and package size when selecting this regulator for their specific projects.