LX1994CLD

高效率LED驱动器 High Efficiency LED Driver

The LX1994 is a compact, high efficiency, step-up boost controller which is designed to drive a string of white or colored LED’s in a backlight or front light system. LX1994 design is based on dual mode PFM architecture and provides maximum efficiency typically greater than 92%. The LX1994 has many unique design features and advantages over competitor solutions. The features included: low quiescent current 100µA typical, low shut down current <1µA, dedicate ambient light sensor interface LX1970, dual dimming modes, low voltage and low offset current sense, and an integrated OVP protection.

**Key Features**

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Efficiency > 92%

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Dual PFM Architecture To Extend Battery Life

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VIN Range 2.0V To 5.5V.

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Start Up Warranty @ 2.0V

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Logic Control Shutdown

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100µA Typical Quiescent Current

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Shutdown IQ Current <1µA

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OVP For Open String Output Voltage Low Voltage And Offset Current Sense Light Sensor LX1970 interface

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Dual Dimming Options PWM or DC Voltage

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No External Zener Clamp Diode

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10-Pin MLP or MSOP