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STAP08DP5XTTR Arkusz danych(PDF) 1 Page - STMicroelectronics

Numer części STAP08DP5XTTR
Szczegółowy opis  Low voltage 8-bit constant current LED sink driver with output error detection for automotive applications
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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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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