亚洲 欧美 图片 自拍 视频

<em id="7lnzx"></em>

    <pre id="7lnzx"></pre>

        <strike id="7lnzx"><address id="7lnzx"></address></strike>

        <big id="7lnzx"></big>

          Shengte Releases First 10-Channel White LED Driver

          Semtech unveiled the first SC-channel white LED driver SC442 with integrated 3A boost power switch. The package is packaged in an ultra-small, ultra-thin 4x4x0.6mm 28-pin MLPQ package that can drive up to 120 LEDs with up to 30mA per channel.

          The SC442 is one of S&T's existing line of LED backlight drivers, including the 6-channel SC440A, 4-channel SC441A/C, and 3-channel SC443 components. The component's high-density package, small external filtering, wide operating voltage range, and high efficiency meet the needs of space-constrained LED-backlit displays and LCD TVs. High-density LED drivers are also ideal for ultra-bright displays with brightness levels above 500 nits for use in the medical, industrial, aerospace and navigation markets, as well as digital signage applications.

          This component extends the Supreme SC44x family of LED driver families for large LCD backlight applications. With an input voltage range of 4.5V to 21V, the SC442 can be powered by a Li-Ion battery pack or a 5V, 12V or 18V regulated supply. The SC442 can output up to 42V and drive up to 12 white LEDs per channel. The component is compatible with a boost or SEPIC (boost/buck) topology.

          In addition, when the input voltage is greater than the output voltage, it can be seamlessly converted to bypass (or linear) mode. Its synchronization function eliminates the intermodulation noise that occurs in backlight systems that use multiple driver ICs, such as large LCD TVs with LED backlights. Other features include overheating, overload, LED open circuit protection, and configurable LED short circuit protection.

          PWM dimming methods up to 50kHz eliminate audible noise problems. The internal DC-DC current mode controller dynamically maintains the optimum LED output voltage. For smaller panel designs, each channel can also be turned off independently. The driver provides LED open circuit protection, configurable LED short circuit protection, and overtemperature protection. The controller's switching frequency can be set from 200kHz to 1MHz for optimum efficiency and L/C filtering size.

          The SC442 LED driver family is available in a MLPQ-UT 28-pin package with an exposed heatsink on the bottom for excellent heat dissipation. The SC442 is a lead-free, halogen-free product that is fully RoHS compliant.

          亚洲 欧美 图片 自拍 视频
          <em id="7lnzx"></em>

            <pre id="7lnzx"></pre>

                <strike id="7lnzx"><address id="7lnzx"></address></strike>

                <big id="7lnzx"></big>