TPS61165TDBVRQ1 Integrated Circuits (ICs)

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The TPS61165TDBVRQ1 is an LED driver that can be used to provide a constant current to individual LED segments, strings, or arrays. It is designed for low-power LED lighting applications such as light bars, backlighting, and LED automotive lighting. It is a part of the LED drivers family from Texas Instruments, which focuses on providing energy-efficient solutions for LED backlighting.

The TPS61165TDBVRQ1 is an integrated current sink and high-Voltage linear regulator. Its applications range from smartphone displays to light bars and backlighting. It provides a fast and efficient way to drive multiple LED segments, strings, or arrays. It can also be used to programmatically dim LED strings.

The TPS61165TDBVRQ1 includes two distinct areas, a current coordination unit and a high-Voltage regulator core. The current coordination unit combines charge pump and current sink technologies to provide constant current outputs and programmable brightness control with high accuracy. The high-Voltage regulator core is capable of providing 5.5V to 24V supply voltage with ultra-low quiescent current and fast transient response.

The TPS61165TDBVRQ1 includes two main modes of operation, on-time and off-time. In the on-time mode, the charge pump voltage is used to generate a constant reference voltage for a current source, which is set by an external resistor. In the off-time mode, a fraction of the charge pump voltage is sinking the load current so that the output current is programmable by the external resistor.

The most striking feature of this LED driver is its high efficiency which provides the system with more run time on stored energy. Similar to other PMIC-LED drivers, the TPS61165TDBVRQ1 provides soft-start and shutdown cycles, thermal shutdown protection and wide input voltage range.

It also includes an open- and short circuit protection to prevent damage to the output transistors and an adjustable switching frequency option to reduce system interference.

The TPS61165TDBVRQ1 is an ideal solution for low-power LED lighting applications due to its fast and efficient current sink and high-voltage regulator core which provides fast transient response with 98 percent minimum efficiency and programmable brightness control.

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