5
LED1202
The
is a 12-channel low quiescent current LED driver which guarantees 5 V output driving capability.
Each channel is able to provide up to 20 mA with a headroom voltage of 350 mV (typ.) only. The output current
can be adjusted separately for each channel by an 8-bit analog and 12-bit digital dimming control.
A slow turn-on and turn-off time improves the system low noise generation performance; moreover, the phase
shifting function helps to reduce the inrush current. Eight patterns can be stored in the internal registers for
automatic sequencing without involving the MCU.
The pattern sequence can be also configured for duration time and number of repetitions. In multi-device
applications, a common clock domain can be shared for timing synchronization.
The device features thermal shutdown and open LED detection. The device I²C interface is based on fast mode
specification and works up to 400 kHz. Eight I²C addresses are possible by using two configuration pins (A0/A1)
only.
UM2879
LED1202
UM2879
-
Rev 2
page 7/17
