The CAT4139TD-GT3 is a high-efficiency DC/DC step-up converter manufactured by ON Semiconductor, designed to cater to a wide array of applications requiring a boost in voltage. This compact and robust integrated circuit is ideal for driving white LEDs in series, providing a consistent and stable power source for backlighting in portable devices, such as mobile phones, digital cameras, and PDAs.

Key Features

• High Efficiency: With an efficiency of up to 87%, this device ensures minimal power loss during the voltage conversion process, making it suitable for battery-powered applications.
• Adjustable Output Voltage: The output voltage can be adjusted up to 22V, providing flexibility to power a wide range of devices.
• High Output Current: It can deliver a continuous output current of up to 750mA, making it capable of driving multiple LEDs in series.
• Low Quiescent Current: The low quiescent current of 0.3mA maximizes battery life for portable applications.
• Soft Start: The integrated soft-start feature limits inrush current during startup, providing protection for both the converter and the load.

Applications

• LED Backlighting for LCD Displays
• Portable Electronic Devices
• General Purpose Step-Up Applications

Technical Specifications

The CAT4139TD-GT3 from ON Semiconductor is an exemplary solution for high-efficiency, compact voltage step-up applications. Its ability to drive high currents, along with a flexible and adjustable voltage output, makes it a versatile choice for designers looking to enhance the performance of their portable and lighting applications.