MAX1818EUT25-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Low Quiescent Current
• Package: SOT-23-6
• Essence: Linear Regulator
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 1.8V to 3.3V
• Dropout Voltage: 120mV at 100mA Load Current
• Quiescent Current: 40µA (typical)
• Output Current: 150mA
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.1% (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX1818EUT25-T has a total of six pins arranged as follows:

```

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

1. VOUT: Output Voltage
2. GND: Ground
3. VIN: Input Voltage
4. SHDN: Shutdown Control
5. FB: Feedback Pin
6. EN: Enable Pin

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output differentials.
• Low quiescent current ensures minimal power consumption during standby or idle conditions.
• Shutdown control enables the device to be turned off when not in use, further reducing power consumption.
• Enable pin provides flexibility to turn the regulator on/off as needed.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - Low quiescent current minimizes power consumption. - Shutdown control and enable pin offer flexibility in power management.

Disadvantages: - Limited output current of 150mA may not be suitable for high-power applications. - SOT-23-6 package may require careful handling during assembly.

Working Principles

The MAX1818EUT25-T is a linear regulator that operates by maintaining a constant output voltage regardless of changes in input voltage or load conditions. It achieves this through the use of feedback control, where the FB pin monitors the output voltage and adjusts the internal circuitry to maintain the desired voltage level.

When the input voltage exceeds the desired output voltage plus the dropout voltage, the regulator operates in a "dropout" region, where it can no longer maintain the specified output voltage. However, as long as the input voltage remains within the specified range, the regulator will provide a stable output voltage.

Detailed Application Field Plans

The MAX1818EUT25-T is commonly used in various applications requiring voltage regulation, such as:

1. Battery-powered devices: Provides a stable voltage supply for portable electronics, ensuring consistent performance even as the battery discharges.
2. IoT devices: Enables efficient power management in low-power connected devices, extending battery life.
3. Automotive electronics: Ensures reliable voltage supply to sensitive components, preventing damage from voltage fluctuations.
4. Industrial control systems: Offers stable voltage regulation for sensors, actuators, and other critical components.

Detailed and Complete Alternative Models

1. MAX1818EUT33-T: Similar to MAX1818EUT25-T but with an output voltage range of 3.3V to 5.5V.
2. MAX1818EUT18-T: Similar to MAX1818EUT25-T but with an output voltage range of 1.8V to 3.3V.
3. MAX1818EUT12-T: Similar to MAX1818EUT25-T but with an output voltage range of 1.2V to 2.5V.

These alternative models offer different output voltage ranges to cater to specific application requirements.

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