MIC2951-02BM-TR

Product Overview

Category

The MIC2951-02BM-TR belongs to the category of voltage regulators.

Use

It is primarily used for regulating and stabilizing voltage in electronic circuits.

Characteristics

• Input Voltage Range: 2.5V to 26V
• Output Voltage Range: 1.24V to 20V
• Maximum Output Current: 150mA
• Low Dropout Voltage: 380mV at 150mA
• Low Quiescent Current: 120µA
• Thermal Shutdown Protection
• Short Circuit Current Limiting
• Reverse Battery Protection

Package

The MIC2951-02BM-TR comes in a small outline package (SOT-23-5) which is suitable for surface mount applications.

Essence

The essence of the MIC2951-02BM-TR is its ability to provide stable and regulated voltage output, even when the input voltage varies.

Packaging/Quantity

The MIC2951-02BM-TR is typically packaged in reels or tape and reel format, with a quantity of 3000 units per reel.

Specifications

• Input Voltage Range: 2.5V to 26V
• Output Voltage Range: 1.24V to 20V
• Maximum Output Current: 150mA
• Dropout Voltage: 380mV at 150mA
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-23-5

Detailed Pin Configuration

The MIC2951-02BM-TR has five pins arranged as follows:

1. GND (Ground)
2. IN (Input Voltage)
3. EN (Enable)
4. OUT (Output Voltage)
5. BYP (Bypass Capacitor)

Functional Features

• Voltage Regulation: The MIC2951-02BM-TR ensures a stable output voltage regardless of input voltage fluctuations.
• Low Dropout Voltage: It has a low dropout voltage, enabling efficient regulation even when the input voltage is close to the desired output voltage.
• Thermal Shutdown Protection: The device incorporates thermal shutdown protection to prevent damage due to excessive heat.
• Short Circuit Current Limiting: It includes short circuit current limiting to protect the device and the connected circuitry from damage in case of a short circuit.
• Reverse Battery Protection: The MIC2951-02BM-TR offers reverse battery protection, safeguarding the circuit from potential damage caused by reverse polarity.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Low dropout voltage ensures efficient voltage regulation.
• Thermal shutdown protection prevents overheating and damage.
• Short circuit current limiting protects the device and connected circuitry.
• Reverse battery protection safeguards against reverse polarity.

Disadvantages

• Maximum output current limited to 150mA, which may not be sufficient for high-power applications.
• Limited output voltage range may restrict certain voltage requirements.

Working Principles

The MIC2951-02BM-TR operates based on a linear voltage regulator principle. It compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage. The device uses feedback control to regulate the output voltage, compensating for variations in the input voltage and load conditions.

Detailed Application Field Plans

The MIC2951-02BM-TR finds applications in various electronic circuits that require stable and regulated voltage supply. Some common application fields include:

1. Battery-powered devices: The voltage regulator ensures a constant voltage supply to power electronic devices, extending battery life.
2. Automotive electronics: It provides stable voltage to automotive systems, preventing damage due to voltage fluctuations.
3. Industrial control systems: The regulator ensures reliable voltage supply for precise and accurate operation of control systems.
4. Consumer electronics: It is used in devices like smartphones, tablets, and portable media players to maintain a stable power source.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with a wide input voltage range and adjustable output voltage.
2. LT1084: A high-current, low-dropout linear voltage regulator suitable for demanding applications.
3. LM1117: A low dropout voltage regulator available in various fixed output voltage options.
4. MAX603: A precision voltage reference and regulator with low quiescent current and high accuracy.

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

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