Overview of Texas Instruments TPS60243DGKR

The TPS60243DGKR is a high-efficiency, charge-pump-based, constant-current white LED driver from Texas Instruments, designed to drive LEDs with a forward voltage of up to 28V. This device is ideal for battery-powered applications due to its low operational voltage and high efficiency. It is housed in a compact MSOP-8 (DGK) package, making it suitable for space-constrained applications.

Key Features

• Wide Input Voltage Range: The device supports an input voltage range from 2.7V to 5.5V, making it compatible with a variety of power sources, including single-cell lithium-ion batteries.
• Adjustable Output Voltage: The TPS60243DGKR can provide an adjustable output voltage up to 28V, enabling it to drive multiple LEDs in series.
• Constant Current Output: The LED current is set with an external resistor, ensuring a stable and uniform brightness for the LEDs.
• High Efficiency: With a typical efficiency of 84%, this device ensures minimal power loss and heat generation.
• Low Noise Operation: The TPS60243DGKR uses a 1-MHz fixed-frequency regulation to minimize noise, making it suitable for noise-sensitive applications.
• Thermal Shutdown: The built-in thermal shutdown feature protects the device from overheating, enhancing its reliability and lifespan.
• Small Package Size: The MSOP-8 (DGK) package is ideal for portable applications where space is at a premium.

Applications

The TPS60243DGKR is versatile and can be used in a wide array of applications. It is particularly well-suited for:

• Portable devices such as smartphones, tablets, and digital cameras
• Backlighting for LCD displays
• General LED lighting solutions
• GPS and other personal navigation devices

Conclusion

With its high efficiency, constant current output, and a wide input voltage range, the TPS60243DGKR from Texas Instruments is an excellent solution for driving white LEDs in portable devices. Its small package size and low noise operation make it a highly desirable component for designers looking to enhance the visual performance of their applications while maintaining power efficiency.