STP24DP05

STP24DP05 24-bit constant current LED sink driver with output error detection Features ■ Low-voltage power supply down to 3 V ■ 8 x 3 constant current output channels ■ Adjustable output current through external resistors ■ Short and open output error detection ■ Serial data IN/parallel data OUT ■ Shift register data flow register control ■ Accepts 3.3 V and 5 V micro driver ■ Output current: 5-80 mA ■ 25 MHz clock frequency ■ High thermal efficiency package Description The STP24DP05 is a monolithic, low-voltage, low current power 24-bit shift register designed for LED panel displays. The device contains an 8 x 3-bit serial-IN, parallel-OUT shift register that feeds a 8 x 3-bit D-type storage register. In the output stage, twenty four regulated current sources were designed to provide 5-80 mA constant current to drive the LEDs. The 8 x 3 shift register data flow sequence order can be managed through two dedicated pins. TQFP48-EP The detection functionality is activated with a dedicated pin or alternatively, through a logic sequence that allows the user to enter or exit detection mode. Through three external resistors, the user can adjust the output current for each 8-channel group, therefore controlling the light intensity of LEDs. The STP24DP05 guarantees a 20 V output driving capability, allowing the user to connect more LEDs in series. The high clock frequency, 25 MHz, makes the device suitable for high data rate transmission. The 3.3 V of voltage supply is useful for a...