MAX1742EEE+ - English Editing Encyclopedia Entry

Product Overview

Category

The MAX1742EEE+ belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for power management applications, providing efficient and reliable power supply solutions.

Characteristics

• High efficiency: The MAX1742EEE+ offers high conversion efficiency, minimizing power losses.
• Wide input voltage range: It can handle a wide range of input voltages, making it versatile for various applications.
• Low quiescent current: The device has a low standby current, reducing power consumption during idle periods.
• Compact package: The MAX1742EEE+ is available in a small-sized package, enabling space-saving designs.

Package and Quantity

The MAX1742EEE+ is packaged in an industry-standard 16-pin QSOP (Quarter Small Outline Package). It is typically sold in reels containing a specified quantity of units.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: Adjustable from 0.8V to 24V
• Maximum Output Current: 1.5A
• Switching Frequency: 500kHz (fixed)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1742EEE+ features a 16-pin QSOP package with the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. FB: Feedback pin for output voltage regulation
4. EN: Enable pin for turning the device on/off
5. SS/TR: Soft-start/Tracking pin for controlling the startup behavior
6. COMP: Compensation pin for stability optimization
7. VCC: Supply voltage pin for internal circuitry
8. PGND: Power ground pin
9. LX: Switching node pin for connecting the inductor
10. LX: Switching node pin for connecting the inductor
11. PGND: Power ground pin
12. VCC: Supply voltage pin for internal circuitry
13. COMP: Compensation pin for stability optimization
14. SS/TR: Soft-start/Tracking pin for controlling the startup behavior
15. EN: Enable pin for turning the device on/off
16. FB: Feedback pin for output voltage regulation

Functional Features

• High-efficiency step-down converter: The MAX1742EEE+ efficiently steps down the input voltage to a regulated output voltage.
• Adjustable output voltage: The device allows for easy adjustment of the output voltage within a wide range.
• Overcurrent protection: It incorporates overcurrent protection to safeguard against excessive current flow.
• Thermal shutdown: The MAX1742EEE+ includes thermal shutdown functionality, preventing overheating.

Advantages and Disadvantages

Advantages

• High conversion efficiency leads to reduced power losses.
• Wide input voltage range enables versatile applications.
• Compact package facilitates space-saving designs.
• Overcurrent protection and thermal shutdown enhance reliability.

Disadvantages

• Limited maximum output current (1.5A) may not be suitable for high-power applications.
• Fixed switching frequency may not be adjustable for specific requirements.

Working Principles

The MAX1742EEE+ operates as a step-down (buck) converter. It utilizes a high-frequency switching technique to efficiently convert the input voltage to a lower, regulated output voltage. The device employs pulse-width modulation (PWM) control to regulate the output voltage based on feedback from the FB pin. By adjusting the duty cycle of the switching signal, the desired output voltage is achieved.

Detailed Application Field Plans

The MAX1742EEE+ finds application in various fields, including but not limited to: - Portable electronic devices - Battery-powered systems - Industrial automation - Automotive electronics - Telecommunications equipment

Detailed and Complete Alternative Models

1. MAX1743EEE+: Similar to the MAX1742EEE+, but with a higher maximum output current of 2A.
2. MAX1744EEE+: A lower-power variant with a maximum output current of 500mA, suitable for low-power applications.
3. MAX1745EEE+: Offers adjustable output voltage and a higher maximum output current of 3A.

These alternative models provide options based on specific requirements and power demands.

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