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AX2012 - 1.9A Fixed Frequency White LED Driver

General Description

The AX2012 is a step-up converter designed for driving up to 8 series white LEDs for backlighting application.

The AX2012 uses current mode, 1.2MHZ fixed frequency architecture to regulate the LED current, which is set through an external current sense resistor.

Key Features

  • 2.5V to 5.5 V operating input voltage range Drives up to 8 series White LEDs 1.2MHz Fixed Switching Frequency Wide range for PWM dimming Ñb€ (200Hz to 200KHz) y.
  • R ` Internal 1.9A switching w current limit m Û V Over Voltage Protection (OVP) . com h Internal Soft-start Functiontec o of shutdown protection g Current limit and Thermal . ww Under voltage wLockout Available in the 6-pin TSOT-23 and 8-pin TDFN Packages 1/11 AX2012  BLOCK.

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Datasheet Details

Part number AX2012
Manufacturer AXElite
File Size 772.08 KB
Description 1.9A Fixed Frequency White LED Driver
Datasheet download datasheet AX2012 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AX2012 1.9A Fixed Frequency White LED Driver  GENERAL DESCRIPTION The AX2012 is a step-up converter designed for driving up to 8 series white LEDs for backlighting application. The AX2012 uses current mode, 1.2MHZ fixed frequency architecture to regulate the LED current, which is set through an external current sense resistor. Its low 300mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition. The AX2012 includes under-voltage lockout, current limiting and thermal shutdown protection preventing damage in the event of an output overload. The driver is available in small 6-pin TSOT-23 and 8-pin TDFN (2mm x 2mm) packages.  FEATURES 2.5V to 5.