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STP08DP05TTR Datasheet(PDF) 1 Page - STMicroelectronics |
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STP08DP05TTR Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 30 page  May 2007 Rev 2 1/30 30 STP08DP05 Low voltage 8-Bit constant current Led sink with full outputs error detection Features ■ Low voltage power supply down to 3V ■ 8 constant current output channels ■ Adjustable output current through external resistor ■ Short and open output error detection ■ Serial Data IN/Parallel data OUT ■ 3.3V micro driver-able ■ Output current: 5-100mA ■ 30MHz clock frequency ■ Available in high thermal efficiency TSSOP exposed pad ■ ESD protection 2.5kV HBM, 200V MM Description The STP08DP05 is a monolithic, low voltage, low current power 8-bit shift register designed for LED panel displays. The STP08DP05 contains a 8-bit serial-in, parallel-out shift register that feeds a 8- bitD-type storage register. In the output stage, eight regulated current sources were designed to provide 5-100mA constant current to drive the LEDs. The STP08DP05 is backward compatible in the functionality and footprint with STP8C/L596 and extends its functionality with open and short detection on the outputs. The detection circuit checks 3 different conditions that can occur on the output line: short to GND, short to VO or open line. The data detection results are loaded in the shift register and shifted out via the serial line output. The detection functionality is implemented without increasing the pin number, through a secondary function of the output enable and latch pin (DM1 and DM2 respectively), a dedicated logic sequence allows the device to enter or leave from detection mode. Through an external resistor, users can adjust the STP08DP05 output current, controlling in this way the light intensity of LEDs, in addition, user can adjust LED’s brightness intensity from 0% to 100% via OE/DM2 pin. The STP08DP05 guarantees a 20V output driving capability, allowing users to connect more LEDs in series. The high clock frequency, 30MHz, also satisfies the system requirement of high volume data transmission. The 3.3V of voltage supply is well useful for applications that interface any micro from 3.3V. Compared with a standard TSSOP package, the TSSOP exposed pad increases heat dissipation capability by a 2.5 factor.. Dip-16 TSSOP16 (Exposed pad) TSSOP16 SO-16 www.st.com Table 1. Device summary Part Number Package Packaging STP08DP05B1R DIP-16 25 parts per tube STP08DP05MTR SO-16 (Tape & Reel) 2500 parts per reel STP08DP05TTR TSSOP16 (Tape & Reel) 2500 parts per reel STP08DP05XTTR TSSOP16 Exposed-Pad (Tape & Reel) 2500 parts per reel |
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