MIC29201-4.8BU

Product Overview

Category

The MIC29201-4.8BU belongs to the category of voltage regulators.

Use

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

Characteristics

• Input Voltage Range: 4.75V to 26V
• Output Voltage: 4.8V
• Maximum Output Current: 1A
• Low Dropout Voltage: 380mV at 1A
• Low Quiescent Current: 120µA
• Thermal Shutdown Protection
• Short Circuit Current Limiting
• Adjustable Output Voltage with External Resistors

Package

The MIC29201-4.8BU comes in a TO-263 package, also known as D2PAK or DDPAK.

Essence

This voltage regulator is designed to provide a stable and regulated output voltage, even when the input voltage varies.

Packaging/Quantity

The MIC29201-4.8BU is typically packaged in reels or tubes, containing a quantity of 1000 units per package.

Specifications

• Input Voltage Range: 4.75V to 26V
• Output Voltage: 4.8V
• Output Current: Up to 1A
• Dropout Voltage: 380mV at 1A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C
• Package Type: TO-263 (D2PAK)
• Package Dimensions: 10.16mm x 15.24mm x 4.57mm

Detailed Pin Configuration

The MIC29201-4.8BU has three pins:

1. VIN (Pin 1): Input voltage pin.
2. GND (Pin 2): Ground reference pin.
3. VOUT (Pin 3): Output voltage pin.

Functional Features

• Voltage Regulation: The MIC29201-4.8BU ensures a stable output voltage of 4.8V, regardless of input voltage fluctuations.
• Low Dropout Voltage: With a dropout voltage of only 380mV at 1A, this regulator minimizes power dissipation and improves efficiency.
• Thermal Shutdown Protection: The device includes built-in thermal shutdown protection to prevent damage from excessive heat.
• Short Circuit Current Limiting: It incorporates short circuit current limiting to protect the regulator and the connected circuitry.
• Adjustable Output Voltage: The output voltage can be adjusted using external resistors, providing flexibility in various applications.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile use.
• Low dropout voltage reduces power dissipation.
• Thermal shutdown protection prevents overheating.
• Short circuit current limiting protects the regulator and connected components.
• Adjustable output voltage provides flexibility.

Disadvantages

• Limited maximum output current of 1A may not be suitable for high-power applications.
• TO-263 package may require additional space on the PCB compared to smaller packages.

Working Principles

The MIC29201-4.8BU is a linear voltage regulator that utilizes a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a constant output voltage. The device operates by continuously adjusting the pass transistor to compensate for changes in the input voltage and load conditions.

Detailed Application Field Plans

The MIC29201-4.8BU finds applications in various fields, including:

1. Power Supply Modules: It can be used in power supply modules to provide a stable voltage source for other electronic components.
2. Battery-Powered Devices: This regulator is suitable for battery-powered devices where a stable voltage is required, such as portable audio players and handheld devices.
3. Automotive Electronics: It can be used in automotive electronics to regulate voltage for various components, including sensors, actuators, and control modules.
4. Industrial Control Systems: The regulator is suitable for industrial control systems that require stable and reliable power sources.

Detailed and Complete Alternative Models

1. LM1117-4.8: A popular alternative with similar specifications and package options.
2. LT1085CT-4.8: Provides higher output current capability and adjustable output voltage.
3. TPS79650DRBR: Offers a fixed 4.8V output voltage with low dropout voltage and thermal shutdown protection.

These alternative models provide similar functionality and can be considered based on specific requirements and availability.

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