ON Semiconductor CAT3647HV3-GT2 LED Driver

The CAT3647HV3-GT2 from ON Semiconductor is a high-efficiency, quad-mode, fractional charge pump LED driver that is designed to power backlighting in portable devices. This compact and versatile component is ideal for applications such as mobile phones, digital cameras, and other handheld devices where power efficiency and minimal space consumption are critical.

Key Features

• Quad-Mode Operation: The device operates in 1x, 1.5x, and 2x modes, allowing for optimal efficiency based on the LED forward voltage requirements.
• High Efficiency: With efficiency up to 94%, the CAT3647HV3-GT2 ensures minimal power loss and extended battery life for portable applications.
• Flexible Brightness Control: It offers 32 dimming levels via a one-wire EZDim™ interface, enabling precise control over backlight brightness.
• Low Noise Operation: The charge pump's soft-switching feature reduces output voltage ripple and minimizes noise, making it suitable for noise-sensitive applications.
• Thermal Protection: Built-in thermal shutdown protection safeguards the device from overheating, enhancing its reliability and longevity.

Electrical Characteristics

The CAT3647HV3-GT2 operates over a wide input voltage range from 3.0V to 5.5V, making it compatible with a variety of power sources. It can drive up to four LEDs with a total output current of 30 mA, ensuring consistent brightness for multiple LED configurations.

Package and Design

Housed in a compact 3mm x 3mm TQFN-16 package, the CAT3647HV3-GT2 is designed for space-constrained applications. Its small footprint and low profile make it an excellent choice for slim and portable electronic devices.

Applications

The CAT3647HV3-GT2 is versatile enough to be used in a broad range of products requiring LED backlighting. Its superior power efficiency and dimming capabilities make it particularly well-suited for:

• Smartphone and tablet backlights
• Portable media player screens
• GPS and handheld navigation devices
• Digital camera and camcorder displays