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AIC1842 - High Efficiency 1.5X charge Pump

Download the AIC1842 datasheet PDF. This datasheet also covers the AIC1841 variant, as both devices belong to the same high efficiency 1.5x charge pump family and are provided as variant models within a single manufacturer datasheet.

General Description

The AIC1841 and AIC1842 provide 4 and 6 LED current source outputs with regulated constant current for uniform intensity.

The AIC1841/2 is the low noise, constant frequency charge pump DC/DC converter that uses 1.5X conversion to increase efficiency in white LED applications.

Key Features

  • 1MHz Switching Frequency 2.7V to 5.5V Input Voltage Range Low Shutdown Current: ≦1µA Regulated 20mA Full-Scale Output Current 32-Position Linear Scale with Digital Control High Accuracy Brightness Matching 33% Less Input Current Than Doubler Charge Pump No Inductors Required Build-in Soft-Start Current Limit and Over Temperature Protection 12-Pin (AIC1841) and 16-Pin (AIC1842) QFN Package.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AIC1841-AnalogIntergrationsCorporation.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number AIC1842
Manufacturer Analog Intergrations Corporation
File Size 631.71 KB
Description High Efficiency 1.5X charge Pump
Datasheet download datasheet AIC1842 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
AIC1841/2 High Efficiency 1.5X charge Pump For White LEDs Backlighting FEATURES 1MHz Switching Frequency 2.7V to 5.5V Input Voltage Range Low Shutdown Current: ≦1µA Regulated 20mA Full-Scale Output Current 32-Position Linear Scale with Digital Control High Accuracy Brightness Matching 33% Less Input Current Than Doubler Charge Pump No Inductors Required Build-in Soft-Start Current Limit and Over Temperature Protection 12-Pin (AIC1841) and 16-Pin (AIC1842) QFN Package APPLICATIONS Cellular Phones PDAs Digital Still Cameras Handheld Devices White LED Backlighting GENERAL DESCRIPTION The AIC1841 and AIC1842 provide 4 and 6 LED current source outputs with regulated constant current for uniform intensity.