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PDF STP16DP05 Data sheet ( Hoja de datos )
| Número de pieza | STP16DP05 | |
| Descripción | Low voltage 16-bit constant current LED sink driver | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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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 VO 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
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www.st.com
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Electrical ratings
2.3 Recommended operating conditions
Table 6. Recommended operating conditions
Symbol
Parameter
Test conditions
Min Typ Max Unit
VDD Supply voltage
3.0 5.5
VO Output voltage
20
IO Output current
OUTn
5 100
IOH Output current
SERIAL-OUT
+1
IOL Output current
SERIAL-OUT
-1
VIH Input voltage
0.7VDD
VDD+0.3
VIL Input voltage
-0.3 0.3VDD
twLAT LE\DM1 pulse width
20
twCLK CLK pulse width
20
twEN OE\DM2 pulse width
tSETUP(D) Setup time for DATA
VDD = 3.0 V to 5.0 V
200
20
tHOLD(D) Hold time for DATA
15
tSETUP(L) Setup time for LATCH
fCLK Clock frequency
Cascade operation (1)
15
30
1. If the device is connected in cascade, it may not be possible achieve the maximum data transfer.
Please consider the timings carefully.
V
V
mA
mA
mA
V
V
ns
ns
ns
ns
ns
ns
MHz
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Figure 8. Clock, serial-in, serial-out
Timing diagrams
Figure 9. Clock, serial-in, latch, enable, outputs
LE\DM1
OE\DM2
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| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet STP16DP05.PDF ] | |
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