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STAP08DP5XTTR Datasheet(PDF) 1 Page - STMicroelectronics |
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STAP08DP5XTTR Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 28 page  This is information on a product in full production. November 2015 DocID024305 Rev 6 1/28 STAP08DP05 Low voltage 8-bit constant current LED sink driver with output error detection for automotive applications Datasheet - production data Features • AECQ100 qualification • Low voltage power supply down to 3 V • 8 constant current output channels • Adjustable output current through external resistor • Short and open output error detection • Serial data IN/parallel data OUT • Able to drive 3.3 V microcontroller • Output current: 5-100 mA • 30 MHz clock frequency • Available in high thermal efficiency TSSOP exposed pad • ESD protection 2.5 kV HBM Applications • Dashboard and infotainment backlighting • Exterior/interior lighting • DTRLs Description The STAP08DP05 is a monolithic, low voltage, low current power 8-bit shift register designed for LED panel displays. The STAP08DP05 contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. In the output stage, eight regulated current sources are designed to provide 5-100 mA constant current to drive the LEDs. 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. STAP08DP05 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 detection mode. Through an external resistor, users can adjust the output current of the STAP08DP05, thus controlling the light intensity of the LEDs. In addition, the user can adjust the intensity of the brightness of the LEDs from 0% to 100% through the OE/DM2 pin. The STAP08DP05 guarantees a 20 V output driving capability, allowing users to connect more LEDs in series. The high clock frequency, 30 MHz, also satisfies the system requirement of high volume data transmission. The 3.3 V of voltage supply is very useful for applications that interface any microcontroller from 3.3 V. Compared with a standard TSSOP package, the TSSOP exposed pad increases the capability of heat dissipation by a factor of 2.5. TSSOP16 (Exposed pad) Table 1. Device summary Order code Package Packing STAP08DP5XTTR TSSOP16 exposed-pad (Tape and reel) 2500 parts per reel www.st.com |
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