With a 40V rated integrated switch FET, the SGM3752
is a boost converter that drives LEDs in series. The
boost converter has a 40V, 1.5A 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 using a pulse width modulation (PWM) signal
applied to the CTRL pin, through which the duty cycle
determines the feedback reference voltage. The
SGM3752 does not burst the LED current; therefore, it
does not generate audible noises on the output
capacitor. For maximum protection, the device features
integrated open LED protection that disables the
SGM3752 to prevent the output voltage from exceeding
the IC absolute maximum voltage ratings during open
LED conditions. SGM3752YTN6G/TR资料下载
