MIC39151-2.5WT

Product Overview

Category

The MIC39151-2.5WT belongs to the category of voltage regulators.

Use

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

Characteristics

• Input Voltage Range: 2.7V to 16V
• Output Voltage: 2.5V
• Output Current: Up to 500mA
• Low Dropout Voltage: 120mV at 500mA
• Low Quiescent Current: 85µA
• Thermal Shutdown Protection
• Short Circuit Protection
• Small Package Size: SOT-223
• RoHS Compliant

Packaging/Quantity

The MIC39151-2.5WT is typically available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 2.7V to 16V
• Output Voltage: 2.5V ±2%
• Output Current: Up to 500mA
• Dropout Voltage: 120mV at 500mA
• Quiescent Current: 85µA
• Line Regulation: 0.05%/V
• Load Regulation: 0.1%/mA
• Ripple Rejection: 70dB
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-223

Pin Configuration

The MIC39151-2.5WT has the following pin configuration:

```

---

| | --| VIN GND |-- --| VOUT EN |-- |___________| ```

• VIN: Input Voltage
• GND: Ground
• VOUT: Output Voltage
• EN: Enable Pin (Active High)

Functional Features

1. Low Dropout Voltage: The MIC39151-2.5WT exhibits a low dropout voltage of 120mV at 500mA, ensuring efficient regulation even with small input-output differentials.
2. Low Quiescent Current: With a quiescent current of only 85µA, the regulator minimizes power consumption when in standby or idle mode.
3. Thermal Shutdown Protection: The device incorporates thermal shutdown protection to prevent damage due to excessive temperature.
4. Short Circuit Protection: It offers short circuit protection, safeguarding the regulator and the connected circuitry from potential damage.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Low dropout voltage ensures efficient voltage regulation.
• Small package size enables space-saving designs.
• Thermal shutdown and short circuit protection enhance reliability.

Disadvantages

• Limited output current capacity (up to 500mA).

Working Principles

The MIC39151-2.5WT is a linear voltage regulator that utilizes a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from a voltage divider network. The pass transistor adjusts its resistance to maintain a constant output voltage despite variations in the input voltage and load conditions.

Application Field Plans

The MIC39151-2.5WT finds applications in various electronic systems where stable and regulated voltage levels are required. Some potential application fields include:

1. Battery-powered devices: Portable electronics, handheld instruments, and battery chargers.
2. Automotive electronics: Infotainment systems, navigation devices, and dashboard displays.
3. Industrial control systems: PLCs (Programmable Logic Controllers), motor drives, and sensors.
4. Communication equipment: Routers, switches, and wireless access points.
5. Consumer electronics: Set-top boxes, audio amplifiers, and gaming consoles.

Alternative Models

1. LM1117-2.5: A popular alternative with similar specifications and pin configuration.
2. LT1763-2.5: Offers lower dropout voltage and higher output current capability.
3. TPS79625: Provides enhanced ripple rejection and lower quiescent current.

These alternative models can be considered based on specific application requirements and design constraints.

In conclusion, the MIC39151-2.5WT is a voltage regulator that offers efficient voltage regulation, low power consumption, and protection features. Its compact size and wide input voltage range make it suitable for various electronic applications. However, its limited output current capacity may restrict its use in high-power systems.