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SGM3749 - White LED Driver

Key Features

  • With a 40V rated integrated switch FET, the SGM3749 is a boost converter that drives up to 10 LEDs in series. The boost converter runs at a 1.25MHz fixed switching frequency with 1.5A switch current limit, and allows for the use of a high brightness LED in general lighting. 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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SGM3749 White LED Driver with PWM Brightness Control in Small Packages GENERAL DESCRIPTION FEATURES With a 40V rated integrated switch FET, the SGM3749 is a boost converter that drives up to 10 LEDs in series. The boost converter runs at a 1.25MHz fixed switching frequency with 1.5A switch current limit, and allows for the use of a high brightness LED in general lighting. 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 using PWM signal through the CTRL pin, the pulse width modulation (PWM) signal determines the feedback reference voltage.