MAX1818EUT25#T

Product Overview

• Category: Voltage Regulator
• Use: Power management
• Characteristics: Low-dropout, low quiescent current
• Package: SOT-23-5
• Essence: Regulates input voltage to a lower, stable output voltage
• Packaging/Quantity: Tape and reel, 3000 units per reel

Specifications

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

Pin Configuration

The MAX1818EUT25#T has a total of 5 pins arranged as follows:

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| | --| VOUT | --| GND | --| VIN | --| BYPASS | --| SHDN | |___________| ```

Functional Features

• Low dropout voltage allows for efficient power conversion.
• Low quiescent current minimizes power consumption when the device is idle.
• Built-in thermal shutdown protection prevents overheating.
• Short-circuit and reverse polarity protection ensure device safety.

Advantages and Disadvantages

Advantages: - Wide input voltage range enables compatibility with various power sources. - Small package size makes it suitable for space-constrained applications. - Excellent load and line regulation provide stable output voltage.

Disadvantages: - Limited output voltage options restrict its use in certain applications. - Higher dropout voltage compared to some alternative models.

Working Principles

The MAX1818EUT25#T is a low-dropout voltage regulator that regulates the input voltage to a stable 2.5V output voltage. It achieves this by utilizing a pass transistor that adjusts its resistance based on the input voltage and load conditions. The device operates in a low quiescent current mode, minimizing power consumption when the load is light. It also incorporates thermal shutdown protection to prevent damage due to excessive temperature.

Detailed Application Field Plans

The MAX1818EUT25#T is commonly used in various applications where a stable 2.5V power supply is required. Some typical application fields include:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearable devices benefit from the low dropout voltage and low quiescent current of the MAX1818EUT25#T, extending battery life.
2. Industrial automation: Control systems, sensors, and actuators often require a reliable and efficient power source, making the MAX1818EUT25#T an ideal choice.
3. Automotive electronics: With its wide input voltage range and robust protection features, the MAX1818EUT25#T finds applications in automotive modules, infotainment systems, and lighting control.

Detailed and Complete Alternative Models

1. LM1117-2.5: This voltage regulator offers similar specifications and pin configuration to the MAX1818EUT25#T, with a slightly lower dropout voltage.
2. MCP1702-2502E/TO: Another alternative with comparable characteristics, including low dropout voltage and quiescent current, but available in a different package (TO-92).

In conclusion, the MAX1818EUT25#T is a voltage regulator designed for power management applications. Its low-dropout voltage, low quiescent current, and compact package make it suitable for a wide range of electronic devices. While it has some limitations in terms of output voltage options, it offers excellent load and line regulation, ensuring a stable output voltage. Its thermal shutdown and protection features enhance its reliability, making it a popular choice in various industries.