High Current and Performance White LED Driver

文件：714.01 Kbytes 頁數(shù)：13 Pages

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High Current and Performance White LED Driver

文件：320.26 Kbytes 頁數(shù)：13 Pages

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High Current and Performance White LED Driver

The HT7939 is a high efficiency boost converter for driving White LEDs using current mode operation. The device is designed to drive up to 39 White LEDs from a 5V power supply. The White LED current is setup using an external current setting resistor, which has a low feedback voltage of 0.2V to mini ? Input range from 2.6V~5.5V\n? Built-in Power MOSFET\n? Can drive up to 39 White LEDs with a 5V input\n? Low standby current: 0.1μA (typ.) with VEN low\n? Integrated Over-voltage, Over-temperature and Over-current protection circuits\n? Under voltage lock-out protection\n? 1.2MHz fixed switching fr;

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High Current and Performance White LED Driver

文件：320.26 Kbytes 頁數(shù)：13 Pages

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High Current and Performance White LED Driver

文件：2.77839 Mbytes 頁數(shù)：12 Pages

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Performance White LED Driver

文件：3.52142 Mbytes 頁數(shù)：13 Pages

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High Current and Performance White LED Driver

文件：3.59481 Mbytes 頁數(shù)：12 Pages

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High Current and Performance White LED Driver

The HT7939A is a high efficiency boost converter for driving multiple White LEDs using current mode operation. The device is designed to drive up to 39 White LEDs from a 5V power supply. The White LED current is setup using an external current setting resistor, which has a low feedback voltage of 0. ?Input voltage range: 2.6V~5.5V\n ?High efficiency - up to 90%\n ?Integrated N-ch MOSFET\n ?Can drive up to 39 WLEDs from a 5V input\n ?Low standby current: 0.1uA (typ.)\n ?Built-in OVP, OCP, OTP, UVLO protection\n ?EN pin dimming frequency up to 200kHz\n ?1.2MHz fixed switching frequency\n ?SOT;

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LED驅(qū)動

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