MP3397ES-LF

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The MP3397ES-LF is an LED driver with fascinating features, making it suitable to power a wide array of lighting applications. This product is specifically designed to meet the requirements of low power LED applications such as flexible LED backlights, LED bulbs, and LED light strips. It has a powerful step-down/step-up switching current regulator with high efficiency, an integrated I2C interface, integrated MOSFETs and adjustable LED dimming control.

The MP3397ES-LF contains an advanced digital control PWM modulator and a high performance analog control IC. Its digital control circuit can convert the PWM pulse from 0-100% of VLED, and the analog control circuit can adjust the output current. It also contains a low dropout regulator, capable of providing 0.15A of continuous output current with a single 0.7V/1.4V reference voltage.

The MP3397ES-LF is equipped with a low-noise buck-boost converter, that uses a current-mode control technique to regulate the output. This feature enables it to operate quiescently even at the lowest light levels. In addition, it features an adjustable frequency range of 50kHz to 200kHz, enabling applications requiring high efficiency while keeping EMI low.

The MP3397ES-LF has low operating voltage and ultra-low quiescent current of 5µA, making it suitable for battery-operated systems. It also includes an adjustable over-temperature protection, that can help improve system reliability and safety. Additionally, the product has integrated synchronous MOSFETs, low RDS(ON) for higher efficiency and a highly configurable I2C interface.

Its working principle is simple. The MP3397ES-LF uses a step-down/step-up switching circuit to obtain a DC voltage output from a DC or AC input source. The switching circuit is included with a high efficiency power factor correction (PFC) block, which increases the power transfer efficiency. Additionally, the MP3397ES-LF includes a digital control PWM modulator that uses an integrated current sense circuit to provide LED current regulation. The PWM modulator can vary the LED current up to a maximum value that is determined by the input voltage.

The MP3397ES-LF can be used in a variety of applications, such as automotive lighting systems, LED street lighting, LED backlighting, and general illumination applications. For automotive applications, it can also be used in vehicle audio systems, navigation systems, and LCD displays. The MP3397ES-LF boasts excellent power efficiency, enabling applications needing low power consumption and reduced thermal dissipation in a compact size,

In summary, the MP3397ES-LF is a flexible LED driver with high efficiency, an integrated I2C control interface, and low voltage operation. It is suitable for a variety of applications such as automotive, LED backlighting and LCD displays. Its integrated step-down/step-up switching current regulator, digital control PWM modulator and current sense circuit allows for high efficiency and adjustable LED dimming control.

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