ISL97684IRTZ-TK

Introduction

The ISL97684IRTZ-TK is a versatile integrated circuit belonging to the category of LED drivers. This component is widely used in various applications due to its unique characteristics and features. In this entry, we will provide an overview of the basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models of the ISL97684IRTZ-TK.

Basic Information Overview

• Category: LED Driver
• Use: The ISL97684IRTZ-TK is primarily used for driving LED backlighting in LCD displays, making it suitable for applications in consumer electronics, automotive displays, and industrial equipment.
• Characteristics: This IC offers high efficiency, precise current regulation, and dimming control, making it ideal for achieving uniform and high-quality LED backlighting.
• Package: The ISL97684IRTZ-TK is available in a compact and thermally efficient 24-lead QFN package.
• Essence: The essence of this product lies in its ability to deliver consistent and reliable LED driving performance while offering flexibility in dimming and current regulation.
• Packaging/Quantity: It is typically supplied in reels with a specific quantity per reel.

Specifications

• Input Voltage Range: 2.8V to 5.5V
• Output Current: Up to 30mA per channel
• Dimming Control: PWM and DC voltage control
• Efficiency: High efficiency up to 92%
• Operating Temperature Range: -40°C to 85°C
• Protection Features: Overvoltage protection, overcurrent protection, and thermal shutdown

Detailed Pin Configuration

The ISL97684IRTZ-TK features a 24-pin QFN package with a detailed pin configuration that includes power supply pins, LED output pins, dimming control pins, and thermal management pins.

| Pin Number | Pin Name | Function | |------------|----------------|---------------------------| | 1 | VIN | Input Voltage | | 2, 3, 4 | GND | Ground | | 5, 6, 7, 8 | SW1, SW2, SW3, SW4 | LED Output Channels | | 9, 10 | VOUT1, VOUT2 | Output Voltage | | 11 | ISET1 | Current Setting for Channel 1 | | 12 | ISET2 | Current Setting for Channel 2 | | 13 | DIM1 | Dimming Control for Channel 1 | | 14 | DIM2 | Dimming Control for Channel 2 | | 15 | EN | Enable Pin | | 16 | PWM | Dimming Control (PWM) | | 17 | FAULT | Fault Indicator | | 18 | THERM | Thermal Management | | 19, 20 | NC | No Connection | | 21, 22, 23 | GND | Ground | | 24 | VIN | Input Voltage |

Functional Features

• Precise Current Regulation: The ISL97684IRTZ-TK provides accurate current regulation for LED backlighting, ensuring consistent brightness and color uniformity.
• Dimming Control: It offers flexible dimming control through both PWM and DC voltage input, allowing for dynamic adjustment of LED brightness.
• High Efficiency: With an efficiency of up to 92%, this IC minimizes power loss and heat generation, contributing to energy-efficient designs.
• Thermal Management: The built-in thermal management feature helps in preventing overheating and ensures reliable operation under varying temperature conditions.

Advantages and Disadvantages

Advantages

• High efficiency and precise current regulation enhance LED backlighting performance.
• Flexible dimming control enables dynamic adjustment of LED brightness.
• Compact package and thermal management features contribute to reliable and space-efficient designs.

Disadvantages

• Limited to driving LED backlighting and may not be suitable for other general lighting applications.
• Requires careful consideration of thermal dissipation in high-power LED backlighting designs.

Working Principles

The ISL97684IRTZ-TK operates by regulating the current flow through the connected LEDs based on the input voltage and dimming control signals. When enabled, the IC monitors the dimming input and adjusts the LED current accordingly, ensuring consistent brightness levels. The built-in protection features safeguard the IC and LEDs from overvoltage, overcurrent, and thermal issues, maintaining safe and reliable operation.

Detailed Application Field Plans

The ISL97684IRTZ-TK finds extensive use in various application fields, including: - Consumer Electronics: LED backlighting for