MIC29302BU TR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High current capability - Low dropout voltage - Adjustable output voltage - Thermal shutdown protection - Current limit protection

Package: TO-263-5 (D2PAK)

Essence: The MIC29302BU TR is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The MIC29302BU TR is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 26V
• Output Voltage Range: 1.25V to 23V
• Dropout Voltage: 450mV at 3A
• Maximum Output Current: 3A
• Line Regulation: 0.015%/V
• Load Regulation: 0.04%/A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC29302BU TR has five pins arranged as follows:

```

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| | | TO-263 | |___________| | | | Vout Vin GND | | Adj EN ```

• Vin: Input voltage pin
• Vout: Output voltage pin
• GND: Ground pin
• Adj: Adjust pin (used to set the desired output voltage)
• EN: Enable pin (used to enable/disable the regulator)

Functional Features

• High current capability allows the MIC29302BU TR to handle demanding loads.
• Low dropout voltage ensures efficient power conversion even when the input voltage is close to the desired output voltage.
• Adjustable output voltage allows flexibility in meeting specific voltage requirements.
• Thermal shutdown protection prevents the IC from overheating and damaging itself.
• Current limit protection safeguards against excessive current flow, protecting both the IC and the connected devices.

Advantages and Disadvantages

Advantages: - High current capability makes it suitable for power-hungry applications. - Low dropout voltage ensures efficient power conversion. - Adjustable output voltage provides flexibility. - Thermal shutdown and current limit protection enhance reliability.

Disadvantages: - Limited input voltage range (4.5V to 26V). - Relatively high quiescent current compared to some other voltage regulators.

Working Principles

The MIC29302BU TR operates as a linear voltage regulator. It takes an input voltage (Vin) and regulates it to a stable output voltage (Vout). The adjust pin (Adj) is used to set the desired output voltage, which can be adjusted within the specified range. The enable pin (EN) allows the regulator to be turned on or off as needed.

The IC uses a combination of internal circuitry and feedback mechanisms to maintain a constant output voltage despite variations in the input voltage and load conditions. It achieves this by continuously adjusting the resistance between Vin and Vout to compensate for changes in the input voltage and load current.

Detailed Application Field Plans

The MIC29302BU TR is commonly used in various electronic devices that require a stable and regulated power supply. Some typical application fields include:

1. Consumer Electronics:

   • Smartphones
   • Tablets
   • Portable media players

2. Computer Systems:

   • Desktop computers
   • Laptops
   • Servers

3. Industrial Equipment:

   • Power supplies
   • Motor control systems
   • Test and measurement instruments

4. Automotive Electronics:

   • In-car entertainment systems
   • Engine control units
   • Lighting systems

Detailed and Complete Alternative Models

1. LM317: Adjustable voltage regulator with similar characteristics and pin configuration.
2. LT1083: High current, adjustable voltage regulator with low dropout voltage.
3. LM1117: Low dropout voltage regulator with fixed output voltage options.

These alternative models offer similar functionality and can be considered as substitutes for the MIC29302BU TR in various applications.

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