STAP08DP05 Datasheet, PDF (1/28 Pages) STMicroelectronics – Low voltage 8-bit constant current LED sink driver with output error detection for automotive applications

STAP08DP05
Low voltage 8-bit constant current LED sink driver with output error
detection for automotive applications
Datasheet - production data
Description
TSSOP16
(Exposed pad)
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.
Features
• AECQ100 qualification
• Low voltage power supply down to 3 V
The detection circuit checks 3 different conditions
that can occur on the output line: short to GND,
short to V_O or open line. The data detection
results are loaded in the shift register and shifted
out via the serial line output.
• 8 constant current output channels
• Adjustable output current through external
resistor
• Short and open output error detection
• Serial data IN/parallel data OUT
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
• Able to drive 3.3 V microcontroller
external resistor, users can adjust the output
• Output current: 5-100 mA
• 30 MHz clock frequency
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
• Available in high thermal efficiency TSSOP
LEDs from 0% to 100% through the OE/DM2 pin.
exposed pad
The STAP08DP05 guarantees a 20 V output
• ESD protection 2.5 kV HBM
driving capability, allowing users to connect more
LEDs in series. The high clock frequency, 30
Applications
MHz, also satisfies the system requirement of
high volume data transmission. The 3.3 V of
• Dashboard and infotainment backlighting
voltage supply is very useful for applications that
• Exterior/interior lighting
• DTRLs
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.
Table 1. Device summary
Order code
Package
Packing
STAP08DP5XTTR
TSSOP16 exposed-pad (Tape and reel)
2500 parts per reel
November 2015
This is information on a product in full production.
DocID024305 Rev 6
1/28
www.st.com