TPS61165DBVT

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The TPS61165DBVT is a constant-current, step-down LED driver unit designed to drive a single step of LEDs in any combination. It operates from input voltages of up to 6V, delivering a maximum output current of 100 mA. TPS61165DBVT is part of the Texas Instruments’ family of linear LED drivers, allowing improved system efficiency, superior LED dimming performance, and LED flicker free making it ideal for LED lighting applications.

TPS61165DBVT simplifies LED driver design with an integrated charge pump delivering up to 6X voltage conversion to allow a 3V to 6V LED supply while providing a constant current to drive the LEDs. It also offers numerous safety features, including current limiting, thermal shutdown, and low input voltage protection. The constant current level can be programmed using an external sense resistor.

The TPS61165DBVT’s unique buck-boost operation allows it to provide the required LED voltage independent of the powering source. The LED current limit is set with an external sense resistor and coupled to an internally regulated voltage source for accuracy and stability.

The device also includes a thermal shut-down feature to protect it from over-temperature conditions and conserve power consumption. In this mode, the device conserves power consumption by reducing the LED current to a safe level as the junction temperature rises.

The TPS61165DBVT provides several ways of controlling LED light output intensity. An enabling pin allows the LED to be quickly turned on and off, while a dimming pin can be used to modulate the current frequency and a voltage can be used to set the target current.

It has its typical application in automotive headlight and tail light applications and can also be applied in night lights, strips and general lighting applications.

Besides its simple and flexible supply and its high current precision, TPS61165DBVT also offers dynamic constant current control independent of load fluctuations. This provides a complete turnkey solution for driving LEDs with no additional components .

The integrated 3.2V linear regulator and current sensing controls, 1kHz PWM dimming control and over-temperature protection are just some of the built-in features that make the TPS61165DBVT a perfect choice for LED applications.

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