ON Semiconductor CAT4237TD-TE7 High Voltage Boost LED Driver

The ON Semiconductor CAT4237TD-TE7 is a high-efficiency, continuous mode inductive booster, designed for driving a string of LEDs. It is well-suited for backlighting LCD displays and is capable of driving an LED string with up to 38V from a 2.7V to 5.5V input. This makes it an ideal choice for portable devices where power efficiency is a critical concern.

Key Features

• Input Voltage Range: The device operates from a 2.7V to 5.5V input voltage, which is perfect for battery-powered applications.
• High Output Voltage: It can drive LED strings with an output voltage of up to 38V, providing the flexibility for multiple LED configurations.
• High Efficiency: With an efficiency of up to 92%, the CAT4237TD-TE7 ensures minimal power loss and heat generation.
• Adjustable Output Current: The output current can be set with a single external resistor, which provides design flexibility and eases inventory management.
• Small Footprint: The device is available in a 5-lead TSOT-23 package, making it suitable for space-constrained applications.
• Thermal Protection: It includes over-temperature protection, safeguarding the device and the system under extreme conditions.
• Switching Frequency: A high 1MHz switching frequency allows the use of small external components, reducing the overall solution size.

Applications

The CAT4237TD-TE7 is versatile and can be used in a variety of applications including:

• Portable and battery-powered devices
• LED backlighting for LCD displays
• General-purpose LED lighting
• Industrial and medical lighting applications

Conclusion

Overall, the ON Semiconductor CAT4237TD-TE7 is a reliable and efficient solution for driving high voltage LED arrays in compact, portable devices. Its high efficiency, adjustable output current, and thermal protection features make it a smart choice for designers looking to optimize their LED lighting applications.