BD26502GUL-E2

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PMIC - LED Drivers are essentially current sources that can be used to drive loads. In the case of LEDs, they are used to convert a current source into a constant current source, allowing the LED to run efficiently and at a relatively low voltage. The BD26502GUL-E2 is a LED driver which is used with LED backlights, and addressable LED strips, as well as compact LED modules.

The BD26502GUL-E2 is an efficient LED driver, primarily designed to be used in portable applications, such as smartphone and tablet displays. It uses a charge pump type boost converter configuration, designed for low quiescent current and high efficiency; a very important feature for mobile devices.

The main output voltage is regulated to 12V, and has a rated output current of 120m A. The additional two voltages, (VDD1 and VDD2) provide two additional output voltage for the auxiliary LED driving, which is also regulated to a maximum of 12V.

The BD26502GUL-E2 is an efficient and cost effective LED driver, with a wide input voltage range of 3.3V up to 24V. It also features overcurrent protection, adjustable current in each phase, low operating temperature, and low power consumption. The Boost mode control voltage reference (VREF_B) of the BD26502GUL-E2 can be set to 0.75V or higher depending on the application needs.

When it comes to the application field of the BD26502GUL-E2, it is suitable for various display applications, such as smartphone and tablet backlights, panel lighting for gaming and notebooks, car navigation and infotainment systems, and LCD panel backlighting solutions. It is also suitable for LED modules and addressable LED strips.

The working principle of the BD26502GUL-E2 is simple, but effective. It uses a charge pump type boost converter configuration which is then combined with a PWM modulation to provide a regulated constant current output.The BD26502GUL-E2 feedbacks the LED current and adjusts the output voltage to change the LED current accordingly.

The BD26502GUL-E2 also features a enable input pin, where the LED enable voltage can be controlled to turn on or off the LED. It also has a thermal shutdown protection circuit, in case the device temperature rises above a predefined threshold and the device needs to shut down to avoid damage.

In conclusion, the BD26502GUL-E2 is a cost-effective and efficient LED driver, suitable for a variety of applications involving LED backlights and addressable LED strips. It is easy to use and has a wide input voltage range, overcurrent protection, adjustable current in each phase, low operating temperature, and low power consumption. All these features make it an ideal choice for mobile applications such as smartphones and tablets.

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