SGM3750 White LED Driver in Small Package

The SGM3750 is a 650kHz boost converter for driving LEDs in series. The SGM3750 is capable of driving 10 white LEDs in series. The default white LED current is set by the external sensor resistor Rset, and the feedback voltage is regulated to 200mV. In PWM mode, the SGM3750 does not burst the LED current; the feedback voltage depends on the PWM signal duty cycle. For PWM dimming control, there is no audible noise on the output capacitor. For maximum protection, the device has integrated LED open circuit protection.

Typical Features:

Input Voltage: 2.7V to 20V

38V Open LED Protection

200mV reference voltage

600kΩ pull-down resistor on CTRL pin

PWM brightness control

5kHz to 100kHz PWM Dimming Frequency Range

Stable Dimming Over 1:500 PWM Range

Soft-start function

Efficiency up to 90%

-40°C to +85°C operating temperature range

Green TDFN-2×2-6L package