MAX8866TEUA-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low-dropout (LDO) linear regulator
• Package: 8-pin µMAX® package
• Essence: Provides regulated output voltage with low dropout voltage
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 120mV at 300mA load current
• Output Current: Up to 300mA
• Line Regulation: ±0.05% typical
• Load Regulation: ±0.1% typical
• Quiescent Current: 40µA typical
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX8866TEUA-T has the following pin configuration:

1. IN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for setting the output voltage
4. EN: Enable pin for turning the regulator on/off
5. BYP: Bypass capacitor pin for improved noise performance
6. OUT: Output voltage pin
7. NC: No connection pin
8. NC: No connection pin

Functional Features

• Low dropout voltage allows operation with small input-output voltage differentials
• Excellent line and load regulation ensures stable output voltage under varying conditions
• Low quiescent current minimizes power consumption in standby mode
• Thermal shutdown and current limit protection ensure safe operation

Advantages and Disadvantages

Advantages: - Low dropout voltage enables efficient operation even with low input voltages - Wide input voltage range allows compatibility with various power sources - Small package size saves board space - Excellent line and load regulation ensures stable output voltage

Disadvantages: - Limited output current may not be suitable for high-power applications - Requires external bypass capacitor for optimal noise performance

Working Principles

The MAX8866TEUA-T is a low-dropout linear regulator that provides a regulated output voltage even when the input voltage is slightly higher than the desired output voltage. It achieves this by utilizing a PNP pass transistor in conjunction with an error amplifier and feedback network. The error amplifier compares the output voltage to a reference voltage, and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The MAX8866TEUA-T is commonly used in various electronic devices and systems where a stable and regulated power supply is required. Some application fields include:

1. Battery-powered devices: Portable electronics, handheld instruments, and wireless communication devices.
2. Automotive electronics: Infotainment systems, navigation systems, and dashboard displays.
3. Industrial equipment: Sensors, control systems, and data loggers.
4. Medical devices: Patient monitoring systems, portable medical instruments, and diagnostic equipment.

Detailed and Complete Alternative Models

1. MAX8867TEUA-T: Similar to MAX8866TEUA-T, but with adjustable output voltage.
2. MAX8868TEUA-T: Higher output current capability (up to 500mA) compared to MAX8866TEUA-T.
3. MAX8869TEUA-T: Ultra-low quiescent current (10µA typical) for power-sensitive applications.

These alternative models offer similar functionality with slight variations to cater to different requirements.

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