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MA2001 Datasheet(PDF) 1 Page - Major-Power Technology Co., LTD. |
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MA2001 Datasheet(HTML) 1 Page - Major-Power Technology Co., LTD. |
1 / 7 page 1/7 MA2001 Major Power Technology Co., Ltd. Rev.1.1 Jan.10, 2014 1.4A Boost for White LED Driver GENERAL DESCRIPTION The MA2001 is a high frequency, asynchronous boost converter. The internal MOSFET can support up to 8 White LEDs for backlighting and OLED power application, and the internal soft start function can reduce the inrush current. The MA2001 uses current mode, 1.0MHZ 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 OVP pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition. The MA2001 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 SOT23 & TSOT23 packages. FEATURES - 2.5V to 5.5V operating input voltage range - Drives up to 8 series White LEDs - 1.0MHz Fixed Switching Frequency - Wide range for PWM dimming (200Hz to 200KHz) - Internal 1.4A switching current limit - Over Voltage Protection (OVP) - Internal Soft-start Function - Current limit and Thermal shutdown protection - Under voltage Lockout APPLICATIONS - Cellular Phones - Digital Cameras - Tablet PC and Handheld Computers - PDA, DVD and GPS Receivers - Portable Instruments |
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