IS32LT3170-STLA3-TR

Product Overview

Category

The IS32LT3170-STLA3-TR belongs to the category of integrated circuits (ICs) specifically designed for LED lighting applications.

Use

This product is primarily used for driving and controlling LEDs in various lighting systems, including automotive, industrial, and general lighting applications.

Characteristics

• High efficiency: The IS32LT3170-STLA3-TR offers high power conversion efficiency, ensuring optimal energy utilization.
• Compact package: It comes in a small form factor package, making it suitable for space-constrained designs.
• Wide input voltage range: The device can operate with a wide range of input voltages, providing flexibility in different lighting setups.
• Dimming control: It supports dimming functionality, allowing users to adjust the brightness of the LEDs as per their requirements.

Package and Quantity

The IS32LT3170-STLA3-TR is available in a surface-mount package. The exact package type may vary depending on the manufacturer. It is typically supplied in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 2.5V to 38V
• Maximum Output Current: 1.5A
• Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The IS32LT3170-STLA3-TR has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin (active high)
4. DIM: Dimming control pin
5. FB: Feedback pin
6. SW: Switching node pin
7. LX: Inductor connection pin
8. VOUT: Output voltage pin

Functional Features

• Constant current control: The IS32LT3170-STLA3-TR provides precise constant current control for driving LEDs, ensuring consistent brightness levels.
• Over-temperature protection: It incorporates over-temperature protection to safeguard the device and LEDs from excessive heat.
• Short-circuit protection: The product includes short-circuit protection to prevent damage in case of a fault.
• Soft-start function: It features a soft-start function to minimize inrush current during startup, prolonging the lifespan of the LEDs.

Advantages and Disadvantages

Advantages

• High efficiency leads to energy savings.
• Compact package allows for versatile design integration.
• Wide input voltage range enables compatibility with various power sources.
• Dimming control offers flexibility in lighting applications.

Disadvantages

• Limited maximum output current may restrict usage in high-power LED systems.
• Higher cost compared to some alternative models.

Working Principles

The IS32LT3170-STLA3-TR operates as a buck converter, converting a higher input voltage to a lower output voltage suitable for driving LEDs. It utilizes pulse width modulation (PWM) techniques to regulate the current flowing through the LEDs, achieving the desired brightness levels. The device employs a feedback mechanism to monitor and adjust the output current based on the dimming control signal.

Detailed Application Field Plans

The IS32LT3170-STLA3-TR finds extensive application in various fields, including:

1. Automotive lighting: Used in headlights, taillights, and interior lighting systems.
2. Industrial lighting: Employed in factory lighting, warehouse illumination, and outdoor area lighting.
3. General lighting: Utilized in residential and commercial lighting fixtures, such as downlights, track lights, and panel lights.

Detailed and Complete Alternative Models

1. IS31LT3170-STLA3-TR: Similar to the IS32LT3170-STLA3-TR, this model offers comparable features and specifications.
2. LT3474: An alternative buck converter IC with higher maximum output current capability.
3. LM3409: A popular LED driver IC with integrated dimming control and high efficiency.

These alternative models can be considered based on specific application requirements and design constraints.

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