HV9803LG-G

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The HV9803LG-G is an integrated, high-efficiency and high-precision constant-current buck LED driver dedicated for outdoor and commercial lighting applications, presented as an easy-to-use module applicable to both linear and buck topologies.

It is a type of DC/DC lighting application field, where a power module is used as the main driver. The HV9803 is specifically designed for the high efficiency and precision buck driver, augmenting light-emitting diode (LED) driver efficiency up to 98%.The controller integrated into the power management integrated circuit (PMIC) regulates the output current issuing from the module and enhances the system drive area.This highly integrated module combines DC/DC converter and secondary side current regulator in one package, which permits a layout-friendly design.Moreover, the current commutation state is well prepared to drive two strings of LEDs with different current transfer architectures. Due to the input and output frequencies, the harmonic distortion (THD) of current ripple can reach up to 5% enabling harsh applications.The LED dimming is implemented by means of external PWM signal by either the buck or linear LED stages. The Pulse-Width Modulation (PWM) scheme of the HV9803LG-G is working at 40kHz, which is suitable for LED strips.Inverting the PWM dimming signal can also be done as an alternative method on the module, which lets the user turn on or off the LEDs with the aid of a low-heat emitting external element. This provides more flexibility to the end user when exposing to ambient temperature.The HV9803LG-G was intended to address the power LED driver industry in terms of LED sources and the industries have fully embraced its utility. The PMIC LED driver has currently been utilized in the lighting products such as strip lights, camping lights, street lights, tunnel lights, waterproof lights and aquarium lights.Since it is versatile and provides a high efficiency-to-price ratio, it has significantly reduced the cost of production as a direct result of user demand.The working principle of the HV9803LG-G is relatively simple to explain. First, the power supply is configured to direct the energy through a diode bridge rectifier, which is used primarily to convert AC to DC power. Second, the power output is directed through a smoothing capacitor to smoothen the current in order to obtain DC power comprising the main voltage output.In a buck configuration, the main voltage output is driven through the inductor, where the power is then regulated with an external precision resistor as the output voltage. A DC/DC converter step-downs the voltage from the main output stage to a less potent voltage to drive the LED channel. The external resistor present in the channel is used to configure the levels of current, which is then regulated from the high side MOSFET constant current, sent from the DC/DC converter.Finally, the PWM dimming signal is used to adjust the levels of the external current for the regulated levels. This is done by controlling the levels of duty cycle, decreasing the output levels by means of varying the pulse width.Overall, the HV9803LG-G is an integrated, high efficiency and high precision constant current buck LED driver dedicated for outdoor lighting applications. Through its PMIC power module and DC/DC converter, it is able to achieve bright and efficient light source with maximum precision, while also providing a flexible LED dimming solution with external pulses employing a PWM signal. It has become the driver of choice in the LED lighting industry due to its highest performance-to-price ratio that is difficult to match by competitor alternatives. Ultimately, the HV9803LG-G continues to serve as a powerful and resilient power regulation module for multiple applications, particularly for LED lighting solutions.

The specific data is subject to PDF, and the above content is for reference