MAX865EUA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low-dropout, high-performance
• Package: 8-pin µMAX®
• Essence: Regulates voltage with minimal power loss
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 15V
• Dropout Voltage: 120mV at 100mA
• Maximum Output Current: 500mA
• Line Regulation: ±0.02% typical
• Load Regulation: ±0.05% typical
• Quiescent Current: 75µA typical
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX865EUA features an 8-pin µMAX® package with the following pin configuration:

1. GND (Ground)
2. IN (Input Voltage)
3. EN (Enable)
4. FB (Feedback)
5. NC (No Connection)
6. OUT (Output Voltage)
7. NC (No Connection)
8. VCC (Supply Voltage)

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• High output current capability allows for powering a wide range of devices.
• Excellent line and load regulation provide stable output voltage under varying conditions.
• Thermal shutdown and current limit protection ensure safe operation.

Advantages

• Compact and space-saving package design.
• Wide input voltage range accommodates various power sources.
• Low quiescent current minimizes power consumption in standby mode.
• Robust protection features enhance reliability and prevent damage.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Non-adjustable output voltage may restrict flexibility in certain scenarios.
• Higher cost compared to some alternative models.

Working Principles

The MAX865EUA is a low-dropout voltage regulator that maintains a stable output voltage despite fluctuations in the input voltage. It achieves this by utilizing a pass transistor and feedback mechanism. The input voltage is regulated to the desired output voltage by adjusting the resistance of the pass transistor. The feedback pin monitors the output voltage and provides control signals to maintain the desired level.

Application Field Plans

The MAX865EUA finds applications in various fields, including:

1. Portable electronic devices: Provides regulated power supply for smartphones, tablets, and portable audio players.
2. Automotive systems: Ensures stable voltage for automotive infotainment systems, lighting modules, and sensors.
3. Industrial equipment: Powers control circuits, motor drivers, and communication modules in industrial automation systems.
4. Medical devices: Regulates voltage for medical instruments, patient monitoring systems, and diagnostic equipment.

Alternative Models

For those seeking alternatives to the MAX865EUA, the following models offer similar functionality:

1. LM1117-ADJ: Adjustable output voltage, higher maximum output current.
2. LT1763-5: Fixed 5V output voltage, lower dropout voltage.
3. TPS7A4700: Wide input voltage range, adjustable output voltage.

These alternatives provide options based on specific requirements and preferences.

In conclusion, the MAX865EUA is a high-performance voltage regulator with low dropout characteristics. Its compact package, wide input voltage range, and excellent regulation make it suitable for various applications. While it has limitations in terms of maximum output current and fixed output voltage, alternative models offer flexibility and customization options.