TPS61169DCKR

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TPS61169DCKR is a cost-effective high-efficiency constant current switch-mode LED driver, allowing up to 95% power conversion efficiency. This highly integrated and compact driving solution requires just a fewt external components such as a MOSFET, resistors and a capacitor. The operational frequency can be controlled by the external resistor for maximum flexibility, meaning the LED drive current and efficiency suit various LED settings.

Applications of the TPS61169DCKR are diverse, from common LED lighting applications to industrial, automotive and medical applications. The TPS61169DCKR comes in a WL-CSP package which allows symmetric current ripple and high power density, and an inductorless topology which solves the difficulty of current sharing and ensures low bill-of-materials and system cost. The device has integrated high-side and low-side FETs, Charge Pumps, Hall Element and LED Current Sense to optimize system performance and efficiency, and also provides advanced features such as over-current and over-temperature protection.

The working principle of the TPS61169DCKR is simple: it uses an internal buck converter circuit to regulate the output current according to the feedback voltage. The Hall element is used to sense the current through the LED and output a voltage that is proportional to the LED current. This feedback voltage is compared with the internal reference voltage and the measured value is used to control the switching of the internal P-FET. The output current is then regulated by adjusting the duty cycle of the switching FET, thus regulating the output current.

In summary, the TPS61169DCKR is an ideal PMIC for LED driving, offering high efficiency with many integrated features. Its versatile application area and simple working principle make it an effective and cost-efficient choice for any LED lighting system.

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