MIC2951-3.3YM

Product Overview

Category

MIC2951-3.3YM belongs to the category of voltage regulators.

Use

It is commonly used to regulate and stabilize voltage levels in electronic circuits.

Characteristics

• Input Voltage Range: 4V to 26V
• Output Voltage: 3.3V
• Maximum Output Current: 500mA
• Low Dropout Voltage: 380mV at 500mA
• Low Quiescent Current: 120µA
• Thermal Shutdown Protection
• Short Circuit Protection

Package

MIC2951-3.3YM is available in a small outline package (SOT-223) which provides excellent thermal performance.

Essence

The essence of MIC2951-3.3YM lies in its ability to provide a stable and regulated output voltage of 3.3V, even when the input voltage varies within a specified range.

Packaging/Quantity

MIC2951-3.3YM is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4V to 26V
• Output Voltage: 3.3V ±2%
• Output Current: Up to 500mA
• Dropout Voltage: 380mV at 500mA
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-223

Detailed Pin Configuration

MIC2951-3.3YM has the following pin configuration:

1. GND (Ground)
2. IN (Input Voltage)
3. OUT (Output Voltage)
4. ADJ (Adjustment Pin)

Functional Features

• Voltage Regulation: MIC2951-3.3YM ensures a stable output voltage of 3.3V, regardless of input voltage fluctuations.
• Low Dropout Voltage: The regulator maintains a low dropout voltage of 380mV at a maximum output current of 500mA, minimizing power dissipation.
• Thermal Shutdown Protection: It incorporates thermal shutdown protection to prevent damage due to excessive temperature.
• Short Circuit Protection: MIC2951-3.3YM includes short circuit protection, safeguarding the device and the connected circuitry.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Low dropout voltage minimizes power dissipation.
• Thermal shutdown and short circuit protection enhance reliability.
• Small package size enables space-efficient designs.

Disadvantages

• Limited output current capacity (up to 500mA).
• Output voltage fixed at 3.3V, not adjustable.

Working Principles

MIC2951-3.3YM operates based on a linear voltage regulation principle. It utilizes a feedback mechanism to compare the output voltage with a reference voltage and adjusts the internal circuitry to maintain a constant output voltage of 3.3V. The regulator continuously monitors the input voltage and adjusts its internal components to compensate for any variations, ensuring a stable output voltage.

Detailed Application Field Plans

MIC2951-3.3YM finds applications in various electronic systems where a stable 3.3V power supply is required. Some common application fields include:

1. Microcontroller Systems: Provides regulated power to microcontrollers, ensuring reliable operation.
2. Sensor Networks: Supplies stable voltage to sensors for accurate measurements.
3. Communication Devices: Powers RF modules, transceivers, and other communication components.
4. Battery-Powered Systems: Regulates voltage for battery-powered devices, extending battery life.
5. Industrial Control Systems: Used in control circuits for stable voltage supply.

Detailed and Complete Alternative Models

1. LM1117-3.3: Similar voltage regulator with adjustable output voltage.
2. LT1763-3.3: Low dropout voltage regulator with higher output current capacity.
3. TPS79633: Ultra-low quiescent current regulator with thermal shutdown protection.

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

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