MAX1680ESA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX1680ESA+ is a high-efficiency, step-up DC-DC converter designed for driving white LEDs in backlighting applications. It provides a constant current output to ensure uniform brightness across the LED array.

Characteristics: - High efficiency conversion - Constant current output - Wide input voltage range - Adjustable output current - Over-temperature protection

Package: The MAX1680ESA+ is available in an 8-pin SOIC package.

Essence: The MAX1680ESA+ is an essential component in LED backlighting systems, ensuring efficient and uniform illumination.

Packaging/Quantity: The MAX1680ESA+ is typically sold in reels of 250 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Current Range: 20mA to 150mA
• Efficiency: Up to 90%
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX1680ESA+ features the following pin configuration:

1. VIN (Input Voltage)
2. GND (Ground)
3. FB (Feedback)
4. EN (Enable)
5. SET (Output Current Set)
6. LX (Switch Node)
7. VOUT (Output Voltage)
8. VDD (Supply Voltage)

Functional Features

• High-efficiency step-up DC-DC conversion
• Constant current output for uniform LED brightness
• Adjustable output current to accommodate different LED arrays
• Over-temperature protection to prevent damage
• Enable pin for easy on/off control

Advantages and Disadvantages

Advantages: - High efficiency conversion reduces power consumption - Constant current output ensures uniform brightness - Wide input voltage range allows for versatile applications - Adjustable output current accommodates different LED arrays

Disadvantages: - Limited output current range may not be suitable for high-power LED applications - Requires external components for proper operation

Working Principles

The MAX1680ESA+ operates as a step-up DC-DC converter, converting a low input voltage to a higher output voltage required for driving white LEDs. It uses a feedback mechanism to maintain a constant current output, ensuring uniform brightness across the LED array. The enable pin allows for easy on/off control, while over-temperature protection prevents damage to the device.

Detailed Application Field Plans

The MAX1680ESA+ is commonly used in various backlighting applications, including: - LCD displays - Automotive instrument clusters - Handheld devices - Portable gaming consoles - Industrial control panels

Detailed and Complete Alternative Models

1. MAX16801 - High-Efficiency Step-Up DC-DC Converter with Integrated Schottky Diode
2. MAX16802 - High-Efficiency Step-Up DC-DC Converter with Integrated MOSFET
3. MAX16803 - High-Efficiency Step-Up DC-DC Converter with Integrated Current Sense

These alternative models offer similar functionality to the MAX1680ESA+ and can be considered as alternatives based on specific application requirements.

In conclusion, the MAX1680ESA+ is a highly efficient step-up DC-DC converter designed for driving white LEDs in backlighting applications. Its constant current output, wide input voltage range, and adjustable output current make it a versatile choice for various LED backlighting systems. However, its limited output current range and requirement for external components should be taken into consideration when selecting the appropriate model for high-power LED applications.