LTM1505HC

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The LTM1505HC is a unique type of LED controller that is specifically designed for applications in circuit board indicators, arrays, light bars, bar graphs, and more. As a single power source, it is capable of delivering either constant current, voltage, or resistive output with a total current output of up to 150mA. As the name suggests, it is built for high-current applications, making it a reliable and cost-effective choice for driving LEDs in high-powered applications.

As a high-current LED driver, the LTM1505HC can be used to control a wide range of LED types, including low-voltage (1.2V to 5.5V) indicator lamps, linear arrays, bar graphs, light bars, and more. Its mechanism of operation is based on a unique adjustable current controller to ensure a stable current delivery, over a wide range of input and output voltages. Moreover, the device features over-current, under-voltage, over-voltage and overtemperature protection and provides protection against short circuit, reverse polarity, and overcurrent faults.

The LTM1505HC works by sensing the current passing through the LED, the voltage drop across the LED, and the temperature of the LED and adjusting its output to provide a stable current. This feature is implemented via an internal current control loop that adjusts its output current to maintain a stable current across the LEDs. Furthermore, the device can be set to work in either constant-current or constant-voltage mode, as according to the application requirements. In addition, the device also offers an intelligent, adaptive frequency control feature, which reduces the frequency during light load operation, thus saving power and ensuring reliability.

To ensure accurate current delivery, the LTM1505HC is equipped with a unique adjustable current controller and an overvoltage protection circuit that protect the device from overvoltage and undervoltage conditions. The adjustable current controller features a current-measuring circuit that constantly measures the current through the LEDs and provides feedback for accurate current delivery.

For versatile operation, the LTM1505HC also offers high-speed PSSL (phase-shift dimming) control which allows for precise control over the LEDs’ brightness and color. Additionally, its two-stage power factor correction ensures the device operates efficiently and delivers clean output currents, while eliminating harmful output inductances. Finally, the device is designed to offer a soft turn-on and turn-off, resulting in a more stable operation, making it ideal for a wide range of LED-based applications.

Overall, the LTM1505HC is a versatile LED driver that meets the needs of a wide range of LED applications, including circuit board indicators, arrays, bar graphs, light bars, and more. With its adjustable current controller and overvoltage protection circuit, it guarantees an accurate and reliable current delivery, while its two-stage power factor correction, high-speed PSSL control and soft turn-on/off features ensure energy efficiency and stable operation.

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