The TPS60250RTE is a high-performance, charge pump-based, constant current LED driver designed by Texas Instruments, tailored to cater to the needs of portable devices that require uniform LED backlighting. This integrated circuit (IC) is specifically engineered to drive multiple white LEDs in series, ensuring consistent brightness and enhancing the user experience of handheld devices such as smartphones, digital cameras, and portable media players.

Key Features

• High Efficiency: The TPS60250RTE utilizes a 1x/1.5x fractional charge pump, enabling efficient operation over a wide input voltage range, which significantly extends battery life in portable applications.
• Adjustable Current: It offers an adjustable LED current up to 30 mA per LED, which can be set via an external resistor, allowing for precise control over the brightness levels to cater to different lighting conditions.
• Flexible Configuration: The device can support up to six LEDs in series, providing versatility in the design of the backlighting array for various screen sizes and configurations.
• Low Noise Operation: The TPS60250RTE operates at a fixed switching frequency of 1 MHz, which minimizes noise and avoids interference with RF and audio circuits in portable devices.
• Thermal Protection: It includes thermal shutdown protection that safeguards the device and the LEDs from potential damage due to overheating.

Technical Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: Up to 20V
• LED Current: Up to 30 mA per LED
• Package: 16-pin QFN (RTE)
• Operating Temperature Range: -40°C to 85°C

Applications

The versatility and efficiency of the TPS60250RTE make it an ideal choice for a wide range of applications. It is commonly used in portable electronics that require uniform and efficient backlighting solutions, such as:

• Smartphones and Tablets
• Digital Cameras and Camcorders
• GPS Navigation Systems
• Portable Gaming Devices

With its robust feature set and reliable performance, the TPS60250RTE by Texas Instruments stands out as a leading solution for portable device manufacturers looking to enhance their products with high-quality LED backlighting.