High Current and Performance White LED Driver

文件：714.01 Kbytes 页数：13 Pages

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High Current and Performance White LED Driver

文件：320.26 Kbytes 页数：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 页数：13 Pages

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High Current and Performance White LED Driver

文件：2.77839 Mbytes 页数：12 Pages

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Performance White LED Driver

文件：3.52142 Mbytes 页数：13 Pages

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High Current and Performance White LED Driver

文件：3.59481 Mbytes 页数：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驱动

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