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AMS AS3668

Manuals and User Guides for AMS AS3668. We found 2 manuals for free downloads User Guide, Data Sheet

AMS AS3668 is a 4-channel LED driver designed to produce lighting effects for portable devices. A highly efficient charge pump enables LED driving over full Li-Ion battery voltage range. The device is equipped with an internal program memory, which allows control of LED patterns even without processor control. This helps the whole system to save power and extend for example battery life time in every mobile application. The AS3668 maintains excellent efficiency over a wide operating range by automatically selecting the best charge pump gain based on the LED forward voltage requirements and the device input voltage.

Key Features

High-efficiency capacitive 60mA charge pump
Automatic mode switching for charge pump
Automatic Pattern Mode without digital control
Highly accurate 4-Channel High Side 25.5mA current sources
Audio Controlled Lighting with internal digital filters
Charge Pump with soft start and overcurrent / short circuit protection
Integrated “easy to use” pattern generator for breathlight LED mode
Small application circuit
Minimum number of external components
Available in 12-pin WL-CSP (1.255x1.680mm) with 0.4mm pitch

Pages: 18 AMS AS3668 User Guide

Brand: AMS Category: Computer components Size: 2 MB

Languages: English

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Frequently Answers and Questions

What is the main purpose of the AS3668?

The AS3668 is a 4-channel LED driver designed to produce lighting effects for portable devices, such as mobile phones, MP3 players, and digital cameras. It is designed to be highly efficient and power-saving, enabling long battery life for mobile applications.

How does the AS3668 control LED patterns?

The AS3668 has an internal program memory that allows control of LED patterns even without processor control. This helps save power and extend battery life in mobile applications. It also supports special digital filter modes that can synchronize LED lighting with an audio signal, making music literally visible.

What is the difference between the 1:1 and 1:2 modes of the charge pump?

The 1:1 mode is a direct bypass where the battery input and output are connected directly to the output current. The 1:2 mode steps up the output voltage to up to twice the battery voltage. The device automatically selects the best mode based on the LED forward voltage requirements and the device input voltage, optimizing efficiency.