BTS5682EAUMA1

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PMIC - LED Drivers: BTS5682EAUMA1

The BTS5682EAUMA1 is a programmable LED driver IC specifically designed for light-emitting diode (LED) lamps used in automotive and transportation lighting applications. The IC features high reliability and low power consumption, making it suitable for various automotive systems. It also provides excellent efficient logical interface to the lamps for programmable and adaptive illumination.

The BTS5682EAUMA1 can be used in automotive headlamps, side lamps, marker lamps, and brake lamps, as well as other vehicle lighting applications. It is capable of driving up to three independent high power LED strings, with integrated control, open load protection, and thermal management. The IC also provides a variety of power management features, including a wide range of adjustable output voltages, adjustable sleep mode, and programmable dimming levels.

Application Field

The BTS5682EAUMA1 LED driver is particularly suitable for use in automotive lighting applications, such as headlamps, turn signals, brake lamps, warning or emergency signals and other lighting requirements. The application field further expands to industrial uses, such as outdoor and indoor signage and other warning systems. It can also be used in computer peripherals, such as backlighting for keyboards, mouse, and trackpad.

Working Principle

The BTS5682EAUMA1 LED driver is a digital-output low-side switch that controls the current level of an LED string. Internal circuitry regulates the LED string current, protecting against over temperature, component aging and incorrect LED string installation. It also provides an interface for external programming and system control. When used in automotive lighting applications, the driver works in cooperation with BCM to coordinate the intelligent light pattern required by the application.

The BTS5682EAUMA1 driver is powered by a 12V or 24V DC power source and provides adjustable output voltage. It includes a voltage regulator, a current sense block, and two switching transistors. The transistors are controlled by the logic circuitry. When the logic circuitry switches the transistor on, the current will flow through the LED string, and the lamp brightness is determined by the current sense transformer output. The driver can be programmed to adjust the current level and thus control the luminance of the connected LED strings.

The BTS5682EAUMA1 LED driver supports multiple modes of operation, including Sleep Mode (Power Down), Low Power Mode, Low Voltage Mode and Adjustable PWM Modes. This makes it suitable for applications where efficiency, power consumption and heat dissipation are important.

In Sleep Mode, the LED driver shuts off the transistor and provides a 1mV output voltage level, minimizing power consumption. This mode is often used when the LED string is not in active use. The Low Power Mode minimizes power consumption by adjusting the voltage level and the transistor drive current using PWM control. This mode is often used when the LED string is active but the brightness is low.

The Low Voltage Mode is used when the input voltage is low compared to the LED string voltage. The driver increases the transistor drive current as the voltage drops, allowing the LED to still receive a sufficient current to produce required light. The Adjustable PWM Mode can be used to dim the LED string in small steps. The PWM frequency is adjustable, allowing different levels of output voltage and current, making it suitable for applications that require different levels of brightness.

Conclusion

The BTS5682EAUMA1 is a sophisticated and reliable LED driver for automotive and industrial lighting applications. With its programmable and adaptive features, the device is more efficient, reliable, and energy-saving than traditional lighting solutions. It provides an easy-to-use logical interface for system control and accurate dimming. The driver achieves low power consumption and a wide range of output current for various applications.

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