AAT2869 Datasheet constant-frequency charge pump DC/DC converter

Manufacturer: Advanced Analogic Technologies

AAT2869 constant-frequency charge pump dc/dc converter by Advanced Analogic Technologies - Datasheet Preview

Datasheet Details

Part number	AAT2869
Manufacturer	Advanced Analogic Technologies
File Size	1.00 MB
Description	constant-frequency charge pump DC/DC converter
Datasheet	AAT2869 Datasheet

General Description

The AAT2869 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 applications.

The AAT2869 is capable of driving 4 white LEDs at a total of 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 AAT2869 SystemPowerTM General.

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.
Fade In and Fade Out.
0.9MHz Constant Frequency.
Automatic Soft-Start Limits Inrush Current.
Dual 150mA LDOs.
Five Voltages with 1.2V, 1.5V, 1.8V, 2.8V, and 3.0V, Sixteen Combinations Set by AS2Cwire.

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