ISL97691IRTZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: LED Driver

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

Package: QFN (Quad Flat No-leads)

Essence: The ISL97691IRTZ-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 LED lighting applications.

Packaging/Quantity: The ISL97691IRTZ-T is available in a QFN package and is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Current Range: Up to 1.2A
• Dimming Control: Analog/PWM
• Operating Temperature Range: -40°C to +85°C
• Efficiency: Up to 95%
• Protection Features: Over-temperature, short-circuit

Detailed Pin Configuration

The ISL97691IRTZ-T has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. VOUT: Output voltage
4. DIM: Dimming control input
5. EN: Enable control input

Functional Features

• Constant current output for driving LEDs
• Wide input voltage range allows for versatile applications
• Dimming control capability for adjusting brightness
• Over-temperature protection ensures safe operation
• Short-circuit protection prevents damage to the IC and LEDs

Advantages and Disadvantages

Advantages: - High efficiency results in energy savings - Wide input voltage range accommodates different power sources - Dimming control allows for flexible lighting options - Protection features enhance reliability and longevity

Disadvantages: - Limited output current range may not be suitable for high-power LED applications - QFN package may require specialized soldering techniques

Working Principles

The ISL97691IRTZ-T operates by regulating the current flowing through the connected LEDs. It converts the input voltage to a constant current output, ensuring consistent brightness across the LEDs. The dimming control input allows for adjusting the LED brightness by varying the current.

The IC incorporates protection features such as over-temperature and short-circuit protection. If the temperature exceeds the specified limit or a short-circuit occurs, the IC automatically shuts down to prevent damage.

Detailed Application Field Plans

The ISL97691IRTZ-T is commonly used in various LED lighting applications, including: - Residential lighting - Commercial lighting - Automotive lighting - Industrial lighting - Display backlighting

Its wide input voltage range and dimming control make it suitable for both low-power and medium-power LED lighting systems.

Detailed and Complete Alternative Models

Some alternative models to the ISL97691IRTZ-T include: - LT3479: 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 efficiency, power handling, and additional features.