MAX8881EUT18+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Low Noise, High PSRR
• 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: 1.8V
• Output Current: Up to 150mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• Line Regulation: ±0.05% typical
• Load Regulation: ±0.1% typical
• PSRR: 70dB at 1kHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX8881EUT18+T is a 6-pin SOT-23 package with the following pin configuration:

1. GND: Ground
2. IN: Input Voltage
3. BYP: Bypass Capacitor Connection
4. FB: Feedback Voltage
5. EN: Enable Control
6. OUT: Output Voltage

Functional Features

• Low dropout voltage allows operation with low input-output voltage differentials.
• Low noise output ensures minimal interference in sensitive applications.
• High power supply rejection ratio (PSRR) reduces sensitivity to input voltage fluctuations.
• Enable control allows for power-saving operation by turning off the regulator when not needed.

Advantages and Disadvantages

Advantages

• Small form factor and low profile package make it suitable for space-constrained designs.
• Wide input voltage range enables compatibility with various power sources.
• Low dropout voltage ensures efficient power conversion.
• Excellent line and load regulation provide stable output voltage.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• SOT-23 package may require additional thermal considerations for dissipating heat.

Working Principles

The MAX8881EUT18+T is a linear regulator that maintains a constant output voltage despite variations in input voltage and load conditions. It achieves this by using a pass transistor to regulate the voltage drop across it. The feedback voltage (FB) pin compares the output voltage with a reference voltage, and any difference is amplified and used to control the pass transistor. This feedback loop adjusts the pass transistor's resistance to maintain the desired output voltage.

Detailed Application Field Plans

The MAX8881EUT18+T is commonly used in various battery-powered applications, such as:

1. Portable electronic devices
2. Wearable devices
3. Mobile phones
4. Digital cameras
5. MP3 players

Its low dropout voltage, low noise, and small form factor make it ideal for these applications where space and power efficiency are crucial.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MAX8881EUT18+T include:

1. LT1763 - Low Dropout Regulator
2. ADP3339 - Low Noise, High PSRR Linear Regulator
3. TPS7A47 - Ultra-Low Noise, High PSRR Voltage Regulator
4. MCP1700 - Low Quiescent Current LDO Regulator

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

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