AAT2868 Datasheet constant-frequency charge pump DC/DC converter

Manufacturer: Advanced Analogic Technologies

AAT2868 constant-frequency charge pump dc/dc converter by Advanced Analogic Technologies - Datasheet Preview

Datasheet Details

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

General 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.

The AAT2868 is capable of driving 4 white LEDs at a total 124mA from a 2.7V to 5.5V input.

The current sinks may be operated individually or in parallel for driving higher-current LEDs.

Overview

PRODUCT DATASHEET AAT2868 SystemPowerTM CABC Compatible 4 Channel Backlight Driver with Dual LDO.

Key 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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