The SGM3732 is a versatile constant current LED
driver with a high efficiency step-up converter
architecture. The low-side power MOSFET is
integrated in the device, significantly shrinking the
overall PCB layout area and minimizing the total
number of external components. Unique technology
and high 1.35A current limit allow SGM3732 to drive up
to 38V output (10 LEDs in series). Alternatively,
SGM3732 can deliver 260mA total current with 3 series
LEDs per string. It can also maximize the current
capability while achieving high conversion efficiency.
The optimized 1.1MHz switching frequency results in
reduced conduction loss and small external component
size. Digital PWM dimming interface is integrated to
adjust LED current. The PWM frequency is in the range
from 2kHz to 60kHz.
Various protection features are built into the SGM3732,
including cycle-by-cycle input current limit protection,
open LED (output over-voltage) protection and thermal
shutdown protection. The leakage current in shutdown
mode is less than 1μA. SGM3732YTN6G/TR资料下载
