MXHV9910B

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The MXHV9910B is a multi-channel non-isolated step-up switching regulator primarily designed for RGB/white LED lighting. It integrates several switching current regulators with protected outputs and a high-voltage transconductance regulator placed in series, while a high frequency switching voltage regulator in parallel services realize efficient and reliable power conversion. As a PMIC – LED Driver, it offers a very wide range of features and performance capabilities to control and power up multiple LEDs with highly accurate output voltage and current.

The MXHV9910B has a maximum power output of 17.3W, and features adjustable current-mode control, burst mode operation, adjustable soft start, adjustable over-temperature protection, and low power startup. It is designed to withstand high voltage and current, reaching up to 80V and 1A respectively. It also has an external resistor for programming the operating frequency, allowing users to choose a suitable frequency for their particular application.

At the heart of the MXHV9910B are the two built-in regulators, the high-voltage transconductance regulator and the high frequency switching voltage regulator. The transconductance regulator adjusts the input voltage to a predetermined level and helps to minimize power dissipation. It also provides a stable input voltage to the switching voltage regulator and reduces line and load transient response. The high frequency switching voltage regulator achieves fast dynamic response, improving overshoot and ringing reduction, and providing soft start and over-temperature protection. Both the transconductance regulator and the high-frequency switching voltage regulator are protected against line and load shorts, over temperature, and over voltage.

The MXHV9910B is an excellent choice for powering and controlling multiple LEDs in displays, backlighting, decorative, signs, and signaling applications. It offers very accurate output voltage, low output voltage ripple, low quiescent current, wide input voltage range, and adjustable current limit, enabling quick and efficient conversion of energy to light. The high frequency switching regulator combined with the high voltage transconductance regulator enables excellent power efficiency and high power conversion, meeting the demands of increasingly energy-efficient applications.

In addition, the MXHV9910B offers several advanced security functions, such as independent soft-start control setting of each channel, internal over temperature protection, fault protection, and complete over current protection of all channels. Moreover, it also has an adjustable output voltage range from 7V to 80V, allowing users to flexibly adjust the output voltage according to their application requirements.

In summary, the MXHV9910B is a versatile and powerful multi-channel non-isolated step-up switching regulator. As a PMIC – LED Driver, it has a huge variety of features and performance capabilities, making it suitable for a wide range of lighting, display, backlighting, decorative and signaling applications. It is highly efficient and offers a variety of protection features, enabling users to enjoy reliable and robust LED lighting systems.

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