ON Semiconductor CAT3643HV2-T2 Overview

The CAT3643HV2-T2 is a high-efficiency, quad-channel, constant-current LED driver from ON Semiconductor, designed to provide a reliable solution for portable and battery-powered applications requiring controlled LED brightness. This integrated circuit is particularly well-suited for driving LEDs in backlighting LCD displays in mobile devices, including smartphones, tablets, and handheld gaming consoles.

Key Features

• Quad-Channel Output: The device features four independently controlled LED channels, allowing for precise control over multiple LEDs simultaneously.
• High Efficiency: With an efficiency rate of up to 92%, this driver ensures minimal power loss and maximizes battery life in portable applications.
• Adjustable Brightness: The CAT3643HV2-T2 provides a wide range of brightness control via a 1-wire EZDim™ interface, making it easy to adjust the LED brightness to suit different environmental conditions.
• Low Profile: The small form factor of the device, available in a 16-lead TQFN package, is ideal for space-constrained applications.
• Low Noise Operation: Designed to operate without audible noise, the CAT3643HV2-T2 is perfect for noise-sensitive electronic devices.

Technical Specifications

• Input Voltage Range: The driver supports an input voltage range of 3V to 5.5V, compatible with most portable device batteries.
• Output Current: Each LED channel can drive up to 30mA, with the current set by an external resistor for flexibility in various design requirements.
• Thermal Protection: The device includes thermal shutdown protection to prevent damage from overheating, thereby enhancing product reliability and lifespan.
• Extended Temperature Range: The CAT3643HV2-T2 is designed to operate over a broad temperature range, making it suitable for a variety of environments.

Applications

The versatility and high performance of the CAT3643HV2-T2 make it an excellent choice for a wide range of applications. Its primary use is in the backlighting of LCD displays, but it can also be employed in general LED lighting, indicator lights, and status or warning lights in various portable electronic devices.

With its combination of efficiency, flexibility, and compact size, the CAT3643HV2-T2 from ON Semiconductor represents a robust solution for designers looking to enhance the visual performance and battery life of their portable and handheld devices.