MAX1749EUK+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-Efficiency Step-Down DC-DC Converter
• Package: SOT23-5
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 100mA
• Quiescent Current: 16µA
• Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1749EUK+T has a total of five pins:

1. VIN - Input voltage pin.
2. GND - Ground reference pin.
3. SW - Switching node pin.
4. FB - Feedback voltage pin.
5. EN - Enable control pin.

Functional Features

• High efficiency step-down DC-DC converter.
• Low quiescent current for improved power efficiency.
• Wide input voltage range allows for versatile applications.
• Adjustable output voltage for flexibility.
• Internal compensation simplifies external component requirements.
• Overcurrent and thermal shutdown protection.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Small package size enables space-saving designs.
• Wide input voltage range accommodates various power sources.
• Adjustable output voltage provides versatility.
• Internal compensation simplifies circuit design.

Disadvantages

• Limited maximum output current may restrict certain applications.
• Operating temperature range may not be suitable for extreme environments.

Working Principles

The MAX1749EUK+T is a step-down DC-DC converter that efficiently converts a higher input voltage to a lower output voltage. It utilizes a switching regulator topology to achieve high efficiency. The input voltage is stepped down by controlling the duty cycle of an internal switch, which regulates the output voltage. The device incorporates internal compensation to simplify external component requirements and improve stability.

Detailed Application Field Plans

The MAX1749EUK+T is commonly used in various applications, including:

1. Battery-powered devices: Provides efficient power conversion for portable electronics such as smartphones, tablets, and wearables.
2. Industrial equipment: Suitable for powering sensors, actuators, and control systems in industrial automation.
3. Automotive electronics: Used in automotive applications like infotainment systems, lighting controls, and advanced driver-assistance systems (ADAS).
4. IoT devices: Enables power management in Internet of Things (IoT) devices, including smart home appliances, environmental sensors, and wireless communication modules.

Detailed and Complete Alternative Models

1. MAX1759: Step-down DC-DC converter with higher maximum output current (up to 500mA).
2. MAX17122: High-efficiency, synchronous step-down DC-DC converter with integrated power switches.
3. MAX15062: Low quiescent current, step-down DC-DC converter with adjustable output voltage.

These alternative models offer different features and specifications to cater to specific application requirements.

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