AAT2868 - constant-frequency charge pump DC/DC converter

Advanced Analogic Technologies

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Datasheet Details

Part number	AAT2868
Manufacturer	Advanced Analogic Technologies
File Size	969.94 KB
Description	constant-frequency charge pump DC/DC converter
Datasheet	AAT2868_AdvancedAnalogicTechnologies.pdf

AAT2868 Product details

Description

The AAT2868 is a low-noise, constant-frequency charge pump DC/DC converter that uses a dual-mode load switch (1x) and fractional (1.5x) conversion to maximize efficiency for white LED Content Adaptive Brightness Control (CABC) applications.

Features

2.7V to 5.5V Supply Voltage Range.
Charge Pump for LED Driver.
Dual Mode 1x/1.5x.
Drives Up to 4 LEDs with up to 31mA each.
Linear LED Output Control Options.
Maximum LED Current Set by AS2Cwire Interface, 32 Steps.
PWM Interface Dimming from 100% to 1% Duty Cycle with Frequency up to 100kHz.
0.9MHz Constant Frequency.
Automatic Soft-Start Limits Inrush Current.
Dual 150mA LDOs.
Enable and Output Voltage Set by A.

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Published: Nov 6, 2010 |