AAT3129
AAT3129 is High Efficiency 1X/1.5X/2X Charge Pump manufactured by AAT.
Description
The AAT3129 is a high efficiency charge pump DC/DC converter with tri-mode load switch (1X) fractional (1.5X) and doubling (2X) conversion for color LED applications. A single current source output provides a regulated current to drive R, G, and B LEDs via three internal switches. With a simple single wire serial bus, the RGB module can be easily controlled to display 4096 colors. Analogic Tech's Advanced Simple Serial Control™ (AS2Cwire™) serial digital input is used to enable, disable, and set the duty cycle of each internal MOSFET switch. Low external parts count (two 1μF flying capacitors and two small bypass capacitors at VIN and OUT) makes the AAT3129 ideally suited for small battery-powered applications.
Features
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Charge Pump™
VIN Range: 2.7V to 5.5V mon Anode RGB LED Control 4096 Color with Single Wire Digital Control 40m A to 180m A Fixed Current Source AS2Cwire Digital Brightness Control Low Noise Constant Frequency Operation Small Application Circuit Regulated Output Current No Inductors 1MHz Switching Frequency IQ <1μA in Shutdown 12-Pin TSOPJW Package
The AAT3129 has a thermal management system to protect the device in the event of a short-circuit
- condition on any of the output pins. Built-in soft- start circuitry prevents excessive inrush current
- during start-up. High switching frequency enables
- the use of small external capacitors. A low current ..
- shutdown feature disconnects the load from VIN
- and reduces quiescent current to less than 1μA.
- The AAT3129 is available in a Pb-free, 12-pin
- TSOPJW package.
Applications
Fashion RGBs Mobile Handsets MP3 Players PDAs Portable Devices RGB Color LEDs RGB Photo Flash Smart Phones
Typical Application
VIN ISRC C1+ VBAT CIN 1μF CCP 1 μF CP
C1C2+
C1 1μF R C2 1μF G B
C2EN/SET EN/SET GND DR DG DB
High Efficiency 1X/1.5X/2X Charge Pump for RGB Color LED Applications Pin Descriptions
Pin #
1 2 3 4 5 6 7 8 9 10 11...
