ON Semiconductor CAT4237TD-GT3 High-Voltage Boost White LED Driver

The CAT4237TD-GT3 from ON Semiconductor is a high-efficiency, high-voltage boost converter designed to drive white LEDs with constant current for uniform brightness. This robust LED driver is optimized for portable devices but is versatile enough to be used in a variety of applications including LCD backlighting, handheld devices, and space-constrained lighting applications.

Key Features

• High Voltage Output: Capable of delivering an output voltage up to 38V, which is suitable for driving multiple white LEDs in series, ensuring consistent brightness and color.
• Adjustable Output Current: Provides an adjustable output current up to 20mA to accommodate different LED configurations and brightness requirements.
• High Efficiency: With an efficiency of up to 92%, it helps in prolonging battery life in portable applications.
• PWM Dimming: Includes a PWM dimming input that allows a wide range of brightness control.
• Low Shutdown Current: Features a low shutdown current of less than 1µA, which contributes to energy savings in standby mode.
• Thermal Protection: Built-in thermal shutdown protection ensures the device operates within safe temperature limits.
• Soft-Start Capability: Integrated soft-start function limits inrush current during startup.

Applications

• LCD Backlighting
• Portable Handheld Devices
• Portable Media Players
• GPS Units
• Other Battery-Powered Devices

The CAT4237TD-GT3 is offered in a 5-lead thin SOT23 package, making it ideal for space-constrained applications. Its capability to drive multiple LEDs with a constant current and its high-voltage output make it an excellent choice for series LED applications, ensuring a long lifespan for the LEDs and maintaining consistent light output.

With its combination of features, the CAT4237TD-GT3 provides a reliable, efficient, and flexible solution for high-voltage LED driving applications, reinforcing ON Semiconductor's commitment to innovation and excellence in power management and lighting solutions.