STP16DP05_08 Datasheet, PDF (1/29 Pages) STMicroelectronics – Low voltage 16-bit constant current LED sink driver with outputs error detection

STP16DP05
Low voltage 16-bit constant current
LED sink driver with outputs error detection
Features
■ Low voltage power supply down to 3 V
■ 16 constant current output channels
■ Adjustable output current through external
resistor
■ Short and open output error detection
■ Serial Data IN/Parallel data OUT
■ 3.3 V micro driver-able
■ Output current: 5-100 mA
■ 30 MHz clock frequency
■ Available in high thermal efficiency TSSOP
exposed pad
■ ESD protection 2.5 kV HBM, 200 V MM
Description
The STP16DP05 is a monolithic, low voltage, low
current power 16-bit shift register designed for
LED panel displays. The device contains a 16-bit
serial-in, parallel-out shift register that feeds a
16-bitD-type storage register. In the output stage,
sixteen regulated current sources were designed
to provide 5-100 mA constant current to drive the
LEDs.
The STP16DP05 features open and short LED
detections on the outputs.The STP16DP05 is
backward compatible with STP16C/L596.The
detection circuit checks 3 different conditions that
can occur on the output line: short to GND, short
to V_O or open line.
Table 1. Device summary
QSOP-24
SO-24
TSSOP24
TSSOP24
(exposed pad)
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 count 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 STP16DP05 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 STP16DP05 guarantees a 20 V output
driving capability, allowing users to connect more
LEDs in series. The high clock frequency,
30 MHz, makes the device suitable for high data
rate transmission. The 3.3 V voltage supply is well
useful for applications that interface any 3.3V
micro. Compared with a standard TSSOP
package, the TSSOP exposed pad increases heat
dissipation capability by a 2.5 factor.
Order codes
Package
Packaging
STP16DP05MTR
STP16DP05TTR
STP16DP05XTTR
STP16DP05PTR
SO-24 (tape and reel)
TSSOP24 (tape and reel)
TSSOP24 exposed pad
(tape and reel)
QSOP-24
1000 parts per reel
2500 parts per reel
2500 parts per reel
2500 parts per reel
February 2008
Rev 4
1/29
www.st.com
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