MIC2951-3.3YM-TR

Product Overview

Category

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

Use

This product is primarily used for regulating and stabilizing voltage levels in electronic circuits.

Characteristics

• Voltage regulation: The MIC2951-3.3YM-TR provides a regulated output voltage of 3.3V.
• Low dropout voltage: It operates with a low dropout voltage, ensuring efficient power conversion.
• Current limiting: The device incorporates current limiting features to protect the circuit from excessive current flow.
• Thermal shutdown: It includes thermal shutdown protection to prevent overheating.

Package

The MIC2951-3.3YM-TR is available in a small outline package (SOT-223) which facilitates easy integration into various circuit designs.

Essence

The essence of this product lies in its ability to provide a stable and regulated output voltage, ensuring reliable operation of electronic devices.

Packaging/Quantity

The MIC2951-3.3YM-TR is typically packaged in reels or tubes, containing a specified quantity of units per package.

Specifications

• Input Voltage Range: 4.5V to 26V
• Output Voltage: 3.3V
• Dropout Voltage: 0.6V (typical)
• Output Current: Up to 150mA
• Quiescent Current: 120µA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC2951-3.3YM-TR has the following pin configuration:

1. GND (Ground): Connected to the ground reference of the circuit.
2. VIN (Input Voltage): Receives the input voltage to be regulated.
3. VOUT (Output Voltage): Provides the regulated output voltage.
4. BYP (Bypass): Connects a bypass capacitor to improve stability and transient response.
5. ADJ (Adjust): Allows for fine-tuning of the output voltage if required.

Functional Features

• Voltage Regulation: The MIC2951-3.3YM-TR maintains a constant output voltage despite variations in input voltage or load conditions.
• Current Limiting: It incorporates current limiting circuitry to protect the connected devices from excessive current.
• Thermal Shutdown: The device includes thermal shutdown protection, which activates when the temperature exceeds a certain threshold, preventing damage due to overheating.

Advantages and Disadvantages

Advantages

• Stable Output: Provides a regulated output voltage, ensuring reliable operation of electronic circuits.
• Low Dropout Voltage: Operates with a low dropout voltage, minimizing power dissipation.
• Compact Package: The small outline package allows for easy integration into various circuit designs.
• Current Limiting and Thermal Shutdown: Offers protection against excessive current and overheating, enhancing circuit safety.

Disadvantages

• Limited Output Current: The maximum output current is limited to 150mA, which may not be sufficient for high-power applications.
• Fixed Output Voltage: The output voltage is fixed at 3.3V, limiting its versatility for applications requiring different voltage levels.

Working Principles

The MIC2951-3.3YM-TR utilizes a combination of internal circuitry, including voltage references, error amplifiers, and pass transistors, to regulate the output voltage. It compares the feedback voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The MIC2951-3.3YM-TR finds application in various electronic systems, including but not limited to:

1. Battery-powered devices: It can be used to regulate the voltage supplied by batteries, ensuring consistent performance of portable electronics.
2. Microcontrollers and digital circuits: Provides a stable power source for microcontrollers, ensuring reliable operation.
3. Communication systems: Used to regulate voltage in communication devices such as routers, modems, and wireless transceivers.
4. Automotive electronics: The device can be employed in automotive applications, providing regulated voltage for sensors, control modules, and other electronic components.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and functionality.
2. LT1763-3.3: Offers lower dropout voltage and higher output current compared to the MIC2951-3.3YM-TR.
3. MCP1703-3.3: Another alternative with comparable characteristics, suitable for low-power applications.

These alternative models provide options for designers based on specific requirements and constraints.

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