MIC2940A-5.0WT

Product Overview

Category

The MIC2940A-5.0WT belongs to the category of voltage regulators.

Use

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

Characteristics

• The MIC2940A-5.0WT is a low-dropout (LDO) voltage regulator.
• It has a fixed output voltage of 5.0V.
• This regulator can handle a maximum input voltage of up to 26V.
• It provides a high current output capability of up to 1A.
• The device operates within a temperature range of -40°C to +125°C.

Package

The MIC2940A-5.0WT comes in a TO-220 package, which is a widely used through-hole package for power devices.

Essence

The essence of the MIC2940A-5.0WT is its ability to regulate voltage with low dropout, making it suitable for applications where a stable and precise voltage supply is required.

Packaging/Quantity

This product is typically available in reels or tubes, containing a specific quantity of units per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input Voltage Range: Up to 26V
• Output Voltage: 5.0V (fixed)
• Output Current: Up to 1A
• Dropout Voltage: 400mV (typical)
• Line Regulation: 0.04% (typical)
• Load Regulation: 0.2% (typical)
• Quiescent Current: 75mA (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC2940A-5.0WT 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

• Low dropout voltage: The MIC2940A-5.0WT has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Overcurrent and thermal protection: This regulator incorporates built-in protection features to prevent damage from excessive current or high temperatures.
• Fast transient response: The device exhibits a fast response to changes in load conditions, ensuring a stable output voltage during dynamic operation.
• Short-circuit protection: The MIC2940A-5.0WT includes short-circuit protection to safeguard against potential damage caused by short circuits.

Advantages and Disadvantages

Advantages

• High current output capability.
• Wide operating temperature range.
• Low dropout voltage.
• Built-in protection features.

Disadvantages

• Fixed output voltage may limit flexibility in certain applications.
• Higher quiescent current compared to some other voltage regulators.

Working Principles

The MIC2940A-5.0WT operates based on the principle of feedback control. It compares the output voltage with a reference voltage and adjusts the internal circuitry to maintain a stable output voltage of 5.0V, regardless of variations in the input voltage or load conditions. The low dropout voltage ensures efficient regulation even when the input voltage is only slightly higher than the desired output voltage.

Detailed Application Field Plans

The MIC2940A-5.0WT finds applications in various electronic systems that require a regulated 5.0V power supply. Some common application fields include:

1. Microcontroller systems: Providing a stable voltage supply for microcontrollers and associated peripherals.
2. Communication devices: Regulating voltage for wireless communication modules, such as Wi-Fi or Bluetooth modules.
3. Industrial automation: Powering sensors, actuators, and control circuits in industrial automation systems.
4. Automotive electronics: Voltage regulation for automotive applications, such as infotainment systems or engine control units.

Detailed and Complete Alternative Models

• LM2940-5.0: A similar 5.0V fixed voltage regulator from Texas Instruments.
• LT1086-5.0: Another 5.0V LDO voltage regulator with adjustable output voltage from Linear Technology.
• NCP1117-5.0: Fixed 5.0V voltage regulator with low dropout characteristics from ON Semiconductor.

These alternative models offer similar functionality and can be considered as substitutes for the MIC2940A-5.0WT depending on specific requirements and availability.

In conclusion, the MIC2940A-5.0WT is a low-dropout voltage regulator that provides a stable 5.0V output voltage with high current capability. Its low dropout voltage, built-in protection features, and wide operating temperature range make it suitable for various electronic applications. However, its fixed output voltage and relatively higher quiescent current should be taken into consideration when selecting an appropriate voltage regulator for specific projects