AAT2869 constant-frequency charge pump DC/DC converter

Advanced Analogic Technologies

Description

PRODUCT DATASHEET AAT2869 SystemPowerTM General .
The AAT2869 is a low-noise, constant-frequency charge pump DC/DC converter that uses a dual-mode load switch (1x) and fractional (1.

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Datasheet Specifications

Part number: AAT2869
Manufacturer: Advanced Analogic Technologies
File Size: 1.00 MB
Datasheet: AAT2869_AdvancedAnalogicTechnologies.pdf
Description: constant-frequency charge pump DC/DC converter

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 Consta

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. A low external parts count (two 1μF flying capacitors and two small 1μF capacitors at IN and OUTCP) makes the

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AAT2869 constant-frequency charge pump converter Advanced Analogic Technologies

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