MIC29151-12BT

Product Overview

Category: Voltage Regulator
Use: Power Management
Characteristics: High-performance, low-dropout linear regulator
Package: TO-220
Essence: Reliable voltage regulation with low dropout and high current capability
Packaging/Quantity: Tube packaging, 50 units per tube

Specifications

• Input Voltage Range: 4.5V to 26V
• Output Voltage: 1.2V
• Maximum Output Current: 1.5A
• Dropout Voltage: 450mV at 1.5A
• Line Regulation: 0.01%/V
• Load Regulation: 0.04%/A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC29151-12BT features a standard TO-220 package with three pins:

1. Input (Pin 1): Connects to the input voltage source.
2. Ground (Pin 2): Connected to the system ground.
3. Output (Pin 3): Provides the regulated output voltage.

Functional Features

• High Accuracy: The MIC29151-12BT ensures precise voltage regulation with a low output voltage tolerance.
• Low Dropout: With a dropout voltage of only 450mV at 1.5A, it minimizes power dissipation and extends battery life.
• High Current Capability: Capable of delivering up to 1.5A of continuous output current, making it suitable for various power-hungry applications.
• Thermal Shutdown Protection: Built-in thermal shutdown protection prevents the device from overheating under excessive loads or high ambient temperatures.
• Short Circuit Protection: The regulator includes short circuit protection, safeguarding the device and connected components from damage in case of a short circuit.

Advantages and Disadvantages

Advantages: - High accuracy and stability - Low dropout voltage - High current capability - Thermal and short circuit protection - Wide input voltage range

Disadvantages: - Relatively high quiescent current compared to some low-power regulators - Requires external capacitors for stability

Working Principles

The MIC29151-12BT is a linear voltage regulator that operates by comparing the output voltage to an internal reference. It adjusts the pass transistor's resistance to maintain a constant output voltage, compensating for changes in load and input voltage. The device utilizes a feedback loop to continuously monitor and regulate the output voltage.

Detailed Application Field Plans

The MIC29151-12BT finds applications in various fields, including but not limited to: 1. Automotive electronics 2. Industrial control systems 3. Telecommunications equipment 4. Power supplies 5. Battery-powered devices 6. Audio amplifiers

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with a fixed 3.3V output voltage.
2. LT1086: Offers adjustable output voltage and higher maximum current capability.
3. TPS7A4700: Provides ultra-low noise performance suitable for sensitive audio applications.
4. L78xx series: Fixed output voltage regulators available in different voltage options.

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

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