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SGM3766 - Boost WLED Driver

Description

With a 40V rated integrated switch FET, the SGM3766 is a boost converter that drives LEDs in series.

The boost converter has a 40V, 2.75A internal MOSFET; thus it can drive single or parallel LED strings for small to large size panel backlighting.

Features

  • integrated open LED protection that disables the SGM3766 to prevent the output voltage from exceeding the IC absolute maximum voltage ratings during open LED conditions. The SGM3766 is available in Green TSOT-23-5 package. It operates over an ambient temperature range of -40℃ to +85℃.

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Full PDF Text Transcription

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SGM3766 38V High Efficiency, Boost WLED Driver with PWM Control GENERAL DESCRIPTION With a 40V rated integrated switch FET, the SGM3766 is a boost converter that drives LEDs in series. The boost converter has a 40V, 2.75A internal MOSFET; thus it can drive single or parallel LED strings for small to large size panel backlighting. The default white LED current is set with the external sensor resistor, RSET, and the feedback voltage is regulated to 200mV, as shown in the typical application. During the operation, the LED current can be controlled by a pulse width modulation (PWM) signal applied to the CTRL pin, through which the duty cycle determines the feedback reference voltage.
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