AS3689-T

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AS3689-T is an LED driver integrated circuit designed for use in portable devices. This device is designed to provide a highly efficient and flexible solution for powering and controlling multiple High-Brightness Peripheral Light-Emitting Diode (HB-LED or pLED) sources.

The AS3689-T is a highly integrated device that includes a boost converter, charge pump, linear regulator, and various current monitoring and control functions. The control circuitry provided by this device helps protect the LEDs from overload conditions and provides a consistent light output level regardless of battery voltage fluctuations. As a result, the device ensures that portable devices maintain precise control of light output with minimal power consumption and no flicker.

The AS3689-T has a wide input voltage range from 2 V to 6 V and comes in a tiny 3mmx2 mm WL-CSP package. This makes it ideally suited for use in small, portable devices such as smartphones, tablets, and laptops. It also has an adjustable output voltage range of 0 V to 18 V, allowing it to drive multiple pLEDs with a single device.

The Boost Converter of the AS3689-T is designed to increase an input voltage to a higher output voltage, allowing the driven pLEDs to receive the necessary power to reach their optimal brightness level. The boost converter has an integrated switch, allowing it to deliver a high conversion ratio and high efficiency over a wide range of input voltages.

The Charge Pump component of the AS3689-T is used to provide the necessary voltage for LED applications where 9 V or 18 V are required. It works by combining multiple low-voltage inputs and converting them into stepped-up voltages for use in LED applications.

In addition to the boost converter and charge pump, the AS3689-T includes a linear regulator and various monitoring and control functions. The linear regulator helps to ensure that the LEDs are protected from overload conditions, as it monitors and controls the current to the LEDs. It also helps to provide a consistent output level, regardless of fluctuations in battery voltage.

Overall, the AS3689-T is a highly integrated LED driver designed for use in small, portable devices. It offers a highly efficient and flexible solution for powering and controlling multiple pLEDs, while also providing protection from overload conditions and a consistent output level regardless of battery fluctuations. This makes the AS3689-T an ideal choice for powering and controlling devices that require precise control of light output in a small package.

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