Product Announcement from Mouser Electronics, Inc.
AMS AS3661 Smartlight LED driver delivers a 9-channel LED driver designed to produce lighting effects for mobile devices. A high efficiency charge pump enables LED driving over full LiIon battery voltage range. The device is equipped with an internal program memory, which allows operation without processor control. The AS3661 maintains excellent efficiency over a wide operating range by autonomously selecting the best charge pump gain based on LED forward voltage requirements. AS3661 is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10 μA (typ). The AS3661 has an I²C-compatible control interface with four pin selectable addresses. Also, the device has a flexible General Purpose Output (GPO), which can be used as a digital control pin for other devices. INT pin can be used to notify processor when a lighting sequence has ended (interrupt - function). Also, the device has a trigger input interface, which allows synchronization between multiple devices.The device requires only four small and low-cost ceramic capacitors.
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