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AS3668 - 4 Channel Breathlight Controller

General Description

The 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.

Key Features

  • High efficiency capacitive 60mA charge pump with 1:1 and 1:2 mode.
  • 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 pro- tection.
  • Integrated “easy to use” pattern generator for breathlight LED function with logarithmic 12bit dimming.
  • Small app.

📥 Download Datasheet

Datasheet Details

Part number AS3668
Manufacturer ams
File Size 1.06 MB
Description 4 Channel Breathlight Controller
Datasheet download datasheet AS3668 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Data Sheet AS3668 4 Channel Breathlight Controller 1 General Description The 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.