MAX1790EUA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low-dropout (LDO) regulator, high current capability, low quiescent current
• Package: 8-pin µMAX® package
• Essence: Provides regulated output voltage with minimal power loss
• 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
• Maximum Output Current: 500mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• Line Regulation: 0.02%/V
• Load Regulation: 0.05%/mA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX1790EUA features an 8-pin µMAX package with 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. OUT: Regulated output voltage pin
6. NC: No connection pin
7. NC: No connection pin
8. BYP: Bypass capacitor pin for improved noise performance

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• High current capability allows for powering a wide range of loads.
• Low quiescent current minimizes power consumption during standby or idle periods.
• Enable pin provides control over the regulator's operation, allowing for power-saving modes.

Advantages and Disadvantages

Advantages: - Low dropout voltage enables efficient power conversion. - High current capability supports a wide range of applications. - Low quiescent current prolongs battery life in portable devices. - Enable pin offers flexibility in power management.

Disadvantages: - Limited output current compared to some other voltage regulators. - Requires external bypass capacitor for optimal noise performance.

Working Principles

The MAX1790EUA is a low-dropout voltage regulator that maintains a stable output voltage despite variations in input voltage and load conditions. It achieves this by using a pass transistor to regulate the output voltage based on feedback from the FB pin. The enable pin (EN) allows the user to control the regulator's operation, providing power-saving capabilities.

Detailed Application Field Plans

The MAX1790EUA finds applications in various fields, including:

1. Portable Electronics: Provides regulated power supply for smartphones, tablets, and portable media players.
2. Industrial Automation: Suitable for powering sensors, actuators, and control systems.
3. Automotive Electronics: Used in automotive modules, infotainment systems, and lighting applications.
4. IoT Devices: Enables efficient power management in connected devices and sensors.
5. Medical Equipment: Provides stable power supply for medical devices and diagnostic equipment.

Detailed Alternative Models

For those seeking alternative options, the following voltage regulators can be considered:

1. LM1117: Low dropout voltage regulator with adjustable output voltage.
2. LT1763: Ultra-low dropout linear regulator with high PSRR and low noise.
3. TPS7A47: High-current, low-dropout voltage regulator with integrated power-on reset.
4. ADP3339: Low dropout voltage regulator with high accuracy and low quiescent current.
5. MCP1700: Low dropout voltage regulator with low operating current and shutdown mode.

These alternatives offer similar functionality and can be chosen based on specific requirements and preferences.

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