ISL97645IRZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: LED Driver

Characteristics: - High efficiency - Wide input voltage range - Dimming control options - Over-temperature protection - Short-circuit protection

Package: IRZ-T package

Essence: The ISL97645IRZ-T is a high-efficiency LED driver IC designed for driving multiple LEDs in series. It provides a constant current output, making it suitable for various lighting applications.

Packaging/Quantity: The ISL97645IRZ-T is available in a small form factor IRZ-T package. The quantity per package may vary depending on the supplier.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Current Range: Up to 1.5A
• Efficiency: Up to 95%
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ISL97645IRZ-T has the following pin configuration:

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| | --| VDD | --| GND | --| VIN | --| DIM | --| FB | --| EN | --| SW | --| LX | |___________| ```

Functional Features

• Constant current output for driving LEDs
• Wide input voltage range allows for flexibility in power supply selection
• Dimming control options enable brightness adjustment
• Over-temperature protection ensures safe operation
• Short-circuit protection prevents damage to the IC and LEDs

Advantages and Disadvantages

Advantages: - High efficiency results in lower power consumption - Wide input voltage range accommodates different power supply options - Dimming control options provide flexibility in lighting control - Over-temperature and short-circuit protection enhance reliability

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

Working Principles

The ISL97645IRZ-T operates by converting the input voltage to a constant current output, which is used to drive the LEDs. It utilizes a switching regulator topology to efficiently regulate the current flow. The dimming control options allow for adjusting the brightness of the LEDs by modulating the current.

Detailed Application Field Plans

The ISL97645IRZ-T is commonly used in various lighting applications, including: - LED backlighting for LCD displays - Automotive interior and exterior lighting - Architectural and decorative lighting - Industrial and commercial lighting

Detailed and Complete Alternative Models

Some alternative models to the ISL97645IRZ-T include: - LT3474: LED driver IC with similar features and specifications - TPS92550: High-power LED driver IC with integrated power MOSFET - LM3409: Constant current buck LED driver IC

These alternative models offer different trade-offs in terms of performance, cost, and package options. It is recommended to evaluate the specific requirements of the application before selecting an alternative model.

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