The SGM3780 is the ideal power solution for
high-power flash LEDs used with cell phone camera
modules or digital still cameras. It is a highly integrated
step-up DC/DC converter with very high switching
frequency, fixed at 2MHz, providing a very small total
solution for portable photo flash. The SGM3780 has
separate Flash mode and Movie/Torch mode enable
pins for maximum flexibility. Flash mode is usually used
with 660ms timer control to generate a high intensity
flash. The Flash mode and Movie/Torch mode LED
current is programmed by external resistors
respectively, making the flash LED solution simple to
control. If both enable pins are at logic high, the LED
current will be programmed by the Movie/Torch mode
setting resistor.
The two LED output sinks can be shorted together
externally for higher power single flash LEDs, up to
1.5A continuous LED current. Thermal regulation is
integrated in Flash mode to limit the IC’s temperature
and continuously provide the maximum allowed output
current. SGM3780YTDP14G/TR资料下载
