MBI5028 is designed for LED displays with Gain Control extension. MBI5028 also exploits PrecisionDrive? technology to enhance its output characteristics. MBI5028 contains a 16-channel shift register and data latches, which convert serial input data into parallel output format. At MBI5028 output stage, sixteen regulated current ports are designed to provide constant current sinks for driving LEDs within a wide range of Vf variations. The excellent output accuracy is within ±3% between channels and within ±6% between ICs. Users may adjust the output current from 5 mA to 90 mA through an external resistor Rext, which gives users flexibility in controlling the light intensity of LEDs. MBI5028 guarantees to endure maximum 17V at the output port. The high clock frequency, 25 MHz, also satisfies the system requirements of high volume data transmission.

MBI5028 also exploits Share-I-O? technology and is backward compatible with MBI5026 in both electrical characteristics and package aspect. By means of the Share-I-O? technique, an additionally effective function, Current Gain, can be added to LED drivers, MBI5028, without any extra pins without adding any extra pin and without changing the printed circuit board originally designed for conventional LED drivers.