TPS60250RTET Integrated Circuits (ICs)

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TPS60250RTET is a low-power switch-mode LED driver from Texas Instruments, that can deliver up to 250mA of constant current for driving LEDs. It provides a wide range of dimming solutions, from analog signal control to I2C, and features a variable switching frequency from 200kHz to 1MHz. It is an ideal solution for applications such as LED backlighting, LED lighting, and other LED displays.

PMIC - LED Drivers

The TPS60250RTET switch-mode LED driver is a member of the Texas Instruments family of PMIC - LED Drivers. The device is a highly efficient, low-power switch-mode DC-DC converter optimized for driving LEDs. It is configurable to support a wide range of dimming solutions, from analog signal control such as potentiometers, to digital control using I2C. The device comes with a host of integrated features to ease design, including wide input voltage range, no external MOSFET components required, and up to 2.5MHz of adjustable switching frequency.

Working Principle

The TPS60250RTET operates in the buck-boost switching topology to provide high efficiency from input to output. In this topology, the output voltage is controlled by varying the duty cycle of the switch node. The duty cycle is determined by the reference voltage and enabled time. The internal current loop provides current regulation for constant current LED operation. The internal voltage loop ensures accurate output voltage with very low output voltage ripple and excellent line and load regulation.

The TPS60250RTET also provides an integrated dimming control block to support a wide range of dimming solutions. Analog dimming is supported by an internal analog dimming input. This input is a 0 to 1V signal that is directly proportional to the LED output current. An external reference voltage and an external sense resistor are used to define the current level, and the internal voltage regulator compensates for voltage drops across the sense resistor. Digital dimming is supported using the integrated I2C interface.

The TPS60250RTET comes with a host of integrated features to ease design and provide a robust solution for driving LEDs. It has a wide input voltage range from 2.5V-20V, making it suitable for a variety of power sources. It features an adjustable switching frequency from 200kHz to 1MHz to reduce noise and increase efficiency. In addition, it has a built-in under voltage lockout to protect the power source from low voltage conditions.

Application Fields

The TPS60250RTET is a highly efficient and low-power switch-mode DC-DC converter optimized for driving LEDs. It is suitable for a wide range of applications such as LED backlighting, LED lighting, and other LED displays. It provides versatile dimming solutions, from analog control to I2C, and wide input voltage range, making it ideal for designs where a single LED driver is required.

The TPS60250RTET is also suitable for other applications such as RFID readers and wireless charging systems. It has a wide input voltage range, making it ideal for battery-powered applications such as portable devices. It is also suitable for high-temperature operation, making it suitable for automotive and industrial applications.

Conclusion

The TPS60250RTET is a low-power switch-mode LED driver from Texas Instruments that is suitable for a wide range of LED lighting applications. It provides dimming solutions ranging from analog to digital, and wide input voltage range, making it an ideal solution for designs where a single LED driver is required. It is a member of the Texas Instruments family of PMIC - LED Drivers and comes with a host of integrated features to ease design and provide a robust solution for driving LEDs.

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