ZXSC380FHTA Integrated Circuits (ICs)

ZXSC380FHTA is a driver for high power LEDs developed by Diodes Incorporated for high-density applications. Designed for high-power LEDs, the driver provides enhanced efficiency, high accuracy, and excellent thermal management. The device integrates a high efficiency step-down DC/DC regulator controller, a buck converter, and a low harmonic current loop with a wide output voltage capability to provide up to 2A of power to LEDs. It also includes advanced safety features such as short circuit and open-loop protection, thermal shutdown, over-voltage protection, and over-temperature protection.

The ZXSC380FHTA is an LED driver which combines a step-down regulator and MOSFET power switch. The controller circuitry is designed to efficiently regulate the current provided to the LED load by stepping down the voltage from the input power source, such as a wall transformer. The controller uses Pulse Width Modulation (PWM) to regulate the LED current, and includes a slew rate control circuit to reduce power supply stress. The device includes two management options, such as low temperature shutdown and over-current protection, and a diode to prevent current flow back to the power source in case of an LED fault.

The device also features an open-loop and feedback compensation circuit, which uses a current loop to maintain LED string current accuracy to better than 0.5%. A low harmonic current loop reduces ripple current and noise, minimizing the risk of interference with other components, while an optimized gate drive reduces switching losses and improves fast transient response.

The ZXSC380FHTA is intended to be used in applications such as automotive lighting, display backlighting, interior lighting, and industrial lighting. The driver is also suitable for use in a variety of applications including decorative lighting, general illumination, and uninterruptible power supply (UPS) systems.

This device has a wide input power range of 4.5 – 32V and a wide output voltage range of 10 – 38V, which allow it to operate in both AC and DC power systems. Its highest operating temperature performance is 150 °C, and its die temperature is rated at 105 °C, making it an ideal choice for high power LEDs in harsh environments. In addition, the device offers up to 95% efficiency.

Overall, the ZXSC380FHTA is a high-density, high performance LED driver which offers efficient, reliable performance and improved safety features. Its advanced features, wide input power range, and high efficiency make it an ideal choice for a variety of LED applications, including automotive lighting, display backlighting, interior lighting, industrial lighting, and uninterruptible power supplies.