LED显示屏驱动IC MBI5031

MBI5031 is designed for LED video applications using internal Pulse Width Modulation (PWM) control with 12-bit gray scales. MBI5031 features a 16-bit shift register which converts serial input data into each 12-bit pixel gray scale of output port. At MBI5031 output port, sixteen regulated current ports are designed to provide uniform and constant current sinks for driving LEDs with a wide range of Vf variations. The output current can be preset through an external resistor. Moreover, the preset current of MBI5031 can be further programmed up or down to 128 gain steps for LED global brightness adjustment.With Scrambled-PWM (S-PWMTM) technology, MBI5031 enhances Pulse Width Modulation by scrambling the “on” time into several “on” periods. The enhancement equivalently increases the visual refresh rate. When building a 12-bit gray scale video, S-PWM? reduces the flickers and improves the fidelity. MBI5031 offloads the signal timing generation of the host controller which just needs to feed data into drivers.

Feature                        
Backward compatible with MBI 5026 in package
16 constant-current output channels
12-bit grayscale PWM control
Scrambled-PWM technology to improve refresh rate
Open-Circuit Detection to detect individual LED errors
8-bit programmable output current gain
Over temperature warning
Constant output current range:
5 ~ 45mA at 3.3V supply voltage
5 ~ 60mA at 5.0V supply voltage
Excellent output current accuracy,
between channels: < ±3% (max.), and
between ICs: < ±6% (max.)
Staggered output delay
Schmitt trigger input
Maximum data clock frequency: 25MHz
3.0V-5.5V supply voltage
Applications

﹡Traffic Signs
﹡Message Signs
﹡Outdoor LED Video Displays
﹡Indoor LED Video Displays