ST STP08DP05 Low-voltage 8-bit Constant Current LED Sink with Full Outputs Error Detection
Summary
The STP08DP05 is an advanced low voltage, 8-bit constant current sink designed specifically for precise LED driving applications. It provides up to five independent channels with features for adjustable intensity control and comprehensive failure detection (open/short circuits), ensuring reliable system operation. This manual details the device's electrical characteristics, operational parameters, time diagrams, and advanced functionality modes. It is essential reading for electronics designers and engineers integrating high-performance, fault-tolerant LED lighting solutions into portable or display systems.
Page 1 Text Content
STP08DP05
Low voltage 8-bit constant current LED sink with full outputs error detection
Features Low voltage power supply down to 3 V 8 constant current output channels
DIP-16
Adjustable output current through external
TSSOP16
resistor
(Exposed pad)
Short and open output error detection Serial data IN/parallel data OUT 3.3 V micro driver-able Output current: 5-100 m A TSSOP16 SO-16 30 MHz clock frequency The data detection results are loaded in the shift
register and shifted out via the serial line output.
Available in high thermal efficiency TSSOP exposed pad
The detection functionality is implemented without ESD protection 2.5 k V HBM, 200 V MM increasing the pin number, through a secondary function of the output enable and latch pin (DM1 and DM2 respectively), a dedicated logic
Description
sequence allows the device to enter or leave from detection mode. Through an external resistor,
The STP08DP05 is a monolithic, low voltage, low
users can adjust the STP08DP05 output current,
current power 8-bit shift register designed for LED
controlling in this way the light intensity of LEDs,
panel displays. The STP08DP05 contains a 8-bit
in addition, user can adjust LED’s brightness
serial-in, parallel-out shift register that feeds a
intensity from 0% to 100% via OE/DM2 pin.
8-bit D-type storage register. In the output stage, eight regulated current sources were designed to
The STP08DP05 guarantees a 20 V output
provide 5-100 m A constant current to drive the
driving capability, allowing users to connect more
LEDs.
LEDs in series. The high clock frequency, 30 MHz, also satisfies the system requirement of
The STP08DP05 is backward compatible in the
high volume data transmission. The 3.3 V of
functionality and footprint with STP8C/L596 and
voltage supply is well useful for applications that
extends its functionality with open and short
interface any micro from 3.3 V. Compared with a
detection on the outputs. The detection circuit
standard TSSOP package, the TSSOP exposed
checks 3 different conditions that can occur on the
pad increases heat dissipation capability by a 2.5
output line: short to GND, short to VO or open line.
factor.
Table 1. Device summary
Order codes Package Packaging
STP08DP05B1R DIP-16 25 parts per tube STP08DP05MTR SO-16 (Tape and reel) 2500 parts per reel STP08DP05TTR TSSOP16 (Tape and reel) 2500 parts per reel STP08DP05XTTR TSSOP16 exposed-pad (Tape and reel) 2500 parts per reel
October 2009 Doc ID 13405 Rev 4 1/30
www.st.com
Page Summary Contents For ST STP08DP05 Low-voltage 8-bit Constant Current LED Sink with Full Outputs Error Detection
Manual Details
| Brand | Current |
|---|---|
| Pages | 30 |
| File Size | 585.01 KB |
| Published | May 18, 2026 |
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Frequently Asked Questions
How can I adjust the LED brightness using this device?
The user can adjust led intensity from 0% to 100% via the OE/DM2 pin.
What error types does the STP08DP05 detect on its output lines?
It detects three conditions: short to GND, short to V supply, or an open line.
What is the minimum operating voltage for this module?
The device supports a low-voltage power supply down to 3 V.
Can I connect this device to different microcontrollers?
Yes, it features a 3.3 V microcontroller-able interface.