LM3645 LED Driver IC

Manufacturer

Part #

Description

The Texas Instruments LM3645 LED Driver IC is a synchronous boost quad LED flash driver with a 2A high-side current source, providing a high level of adjustability within a compact solution. It features quad-high-side current sources to regulate LED current over a 2.3V to 5.5V input voltage range and is ideal for applications such as camera phones and digital still cameras. The device operates in a temperature range of -40°C to 85°C and includes an I2C-compatible interface for control.

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Texas Instruments LM3645 LED Driver IC

Introduction

The Texas Instruments LM3645 LED Driver IC is a versatile and efficient solution designed for driving LED applications. With its compact design and robust features, it is particularly well-suited for modern devices requiring high-performance LED lighting.

Part Description

The LM3645 is a synchronous boost quad LED flash driver that incorporates a 2A high-side current source. It operates within a 2.3V to 5.5V input voltage range and is capable of delivering precise LED current regulation. The device features a 2MHz or 4MHz constant frequency synchronous current-mode PWM boost converter, making it highly adjustable for various applications. Additionally, it includes an I2C-compatible interface for control, dual hardware flash pins, and temperature monitoring capabilities, ensuring reliable performance across a wide temperature range of -40°C to 85°C.

Applications

Camera phone white LED flash
Digital still cameras
Barcode scanners
Handheld data terminals

Industries

Consumer Electronics
Photography
Retail and Inventory Management
Mobile Devices

Usage Ideas

Camera Phone Enhancement: Integrate the LM3645 into a smartphone design to improve the quality of the LED flash for photography, allowing for brighter and more accurate lighting in low-light conditions.
Portable Barcode Scanner: Utilize the LM3645 in a handheld barcode scanner to provide an efficient LED illumination source, enhancing scanning performance in various lighting environments.
Digital Still Camera Upgrade: Implement the LM3645 in a digital camera system to boost the LED flash capabilities, ensuring optimal performance during flash photography while maintaining battery efficiency.

Conclusion

The Texas Instruments LM3645 LED Driver IC stands out as a powerful component for driving LED applications in various devices. Its high level of adjustability, efficiency, and robust features make it an ideal choice for industries ranging from consumer electronics to retail management. Whether enhancing mobile photography or improving scanning technologies, the LM3645 offers a reliable solution for modern lighting needs.