ADP8860ACBZ-R7 Integrated Circuits (ICs)

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The ADP8860ACBZ-R7 is an LED Driver that belongs to the family of Power Management ICs (PMICs). It is designed to reduce the external components necessary to control the brightness of displays and other LED-based applications. It is ideal for applications requiring simultaneous control of multiple strings of LEDs such as those used in advanced displays, backlit keyboards and LED arrays.

The ADP8860ACBZ-R7 LED driver supplies LED current with up to 3.3V of forward bias voltage, which offers improved efficiency and maximum LED brightness with surface-mounted LEDs. When connected to an LED array, its built-in voltage-guided algorithm eliminates extra for sensing and comparison components. This eliminates the need for differentiating load models, reducing the number of components needed and simplifying the design. It also offers configurable operating modes, allowing designers to match the LED operating characteristics to the load requirements.

The ADP8860ACBZ-R7 is a true series-parallel type of LED driver with adjustable current in each of its strings. The output current of each string is adjustable with a resistor divider in range of 3-3.3V. This allows the user a great flexibility to design and control the behaviour of the string. Its open-drain outputs enable to connect also multiple strings at the same time.

This LED driver also has integrated current regulation that provides constant current operation regardless of input voltage or LED forward voltage. This enables the drive current to remain constant as the LED forward voltage changes, as well as allowing designers to use fewer LEDs without affecting the LED current. This helps in efficiently lighting LED arrays of different colour LEDS.

The ADP8860ACBZ-R7\'s high-side buck configuration enables it to operate effectively in any situation of unequal LED forward voltages. Its integrated over-voltage protection (OVP) and short-circuit protection (SCP) protect the connected LEDs against potential damage while its over-temperature protection (OTP) helps maintain optimal performance. It also has a sleep mode wherein the device shuts down current consumption to as low as 100μA, making it suitable for portable applications.

The ADP8860ACBZ-R7 supports a high-voltage input of up to 29V, making it suitable for automotive applications. Its low quiescent current of just 5μA makes this device ideal for battery-powered applications, ensuring a long battery life. Furthermore, its PWM dimming precision of 0.5 % helps in achieving a uniform brightness. The device is available in a thermally enhanced 5 x5 mm, 24-pin TQFN package that offers improved heat dissipation and reduces board space.

In summary, the ADP8860ACBZ-R7 is an ideal LED driver for advanced, automotive and portable applications requiring simultaneous control of multiple strings of LEDs. Its current regulation and protection features, as well as its PWM dimming precision, make it suitable for a wide range of applications.

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