MAX8881EUT50-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Low Noise, High PSRR
• Package: SOT-23-5
• Essence: Linear Regulator
• Packaging/Quantity: Tape & Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 1.8V to 3.6V
• Output Current: Up to 150mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• PSRR: 70dB at 1kHz
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX8881EUT50-T has a total of 5 pins in the SOT-23 package:

1. GND: Ground pin
2. IN: Input voltage pin
3. EN: Enable pin (active high)
4. BYP: Bypass capacitor pin
5. OUT: Output voltage pin

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output differentials.
• Low noise output ensures minimal interference with sensitive circuitry.
• High power supply rejection ratio (PSRR) reduces the impact of input voltage fluctuations on the output.
• Enable pin provides control over the regulator's operation, allowing for power-saving modes.
• Bypass capacitor pin improves stability and reduces noise.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables compatibility with various power sources.
• Small package size makes it suitable for space-constrained applications.
• Low quiescent current minimizes power consumption in standby or low-load conditions.
• Excellent line and load regulation ensures stable output voltage under varying conditions.

Disadvantages

• Limited output current may not be sufficient for high-power applications.
• Dropout voltage may cause a significant voltage drop across the regulator, affecting overall system efficiency.

Working Principles

The MAX8881EUT50-T is a linear regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a feedback voltage derived from the output. The pass transistor adjusts its resistance to maintain a constant output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The MAX8881EUT50-T is commonly used in various battery-powered applications, such as:

1. Portable electronic devices (e.g., smartphones, tablets) where efficient power management is crucial.
2. Wearable devices that require a compact and low-power voltage regulator.
3. IoT devices that operate on limited power sources and demand stable voltage supply.

Detailed and Complete Alternative Models

1. MAX8881EUT25-T: Similar to MAX8881EUT50-T but with an output voltage range of 1.5V to 2.5V.
2. MAX8881EUT33-T: Similar to MAX8881EUT50-T but with an output voltage range of 2.5V to 3.3V.
3. MAX8881EUT18-T: Similar to MAX8881EUT50-T but with an output voltage range of 1.2V to 1.8V.

These alternative models provide flexibility in choosing the desired output voltage range for specific applications.

In conclusion, the MAX8881EUT50-T is a voltage regulator IC with excellent characteristics, including low dropout voltage, low noise, and high PSRR. Its small package size and wide input voltage range make it suitable for various battery-powered applications. However, its limited output current and dropout voltage should be considered when selecting the appropriate regulator for high-power systems.