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PDF STP24DP05 Data sheet ( Hoja de datos )
| Número de pieza | STP24DP05 | |
| Descripción | 24-bit constant current LED sink driver | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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STP24DP05
24-bit constant current
LED sink driver with output error detection
Features
■ Low voltage power supply down to 3 V
■ 8 x 3 constant current output channels
■ Adjustable output current through external
resistors
■ Short and open output error detection
■ Serial data IN/Parallel data OUT
■ Shift register data flow registers control
■ Accepts 3.3 V and 5 V micro driver
■ Output current: 5-80 mA
■ 25 MHz clock frequency
■ High thermal efficiency package
Description
The STP24DP05 is a monolithic, low voltage, low
current power 24-bit shift register designed for
LED panel displays. The device contains a
8 x 3-bit serial-in, parallel-out shift register that
feeds a 8 x 3-bit D-type storage register. In the
output stage, twenty-four regulated current
sources were designed to provide 5-80 mA
constant current to drive the LEDs.
The 8x3 shift registers data flow sequence order
can be managed with two dedicated pins.
The STP24DP05 has a dedicated pin to activate
the outputs with a sequential delay, that will
prevent inrush current during outputs turn-ON.
The device detection circuit checks 3 different
conditions that can occur on the output line: short
to GND, short to VO or open line.
TQFP48
The data detection results are loaded in the shift
registers and shifted out via the serial line output.
The detection functionality is activated with a
dedicated pin or as alternative, through a logic
sequence that allows the user to enter or exit from
detection mode.
Through three external resistors, users can adjust
the output current for each 8-channel group,
controlling in this way the light intensity of LEDs.
The STP24DP05 guarantees a 20 V output
driving capability, allowing users to connect more
LEDs in series.
The high clock frequency, 25 MHz, makes the
device suitable for high data rate transmission.
The 3.3 V of voltage supply is useful for
applications that interface any micro from 3.3 V.
Table 1.
Device summary
Order code
STP24DP05BTR
Package
TQFP48
Packaging
Tape and reel
May 2008
Rev 1
1/26
www.st.com
26
1 page  
STP24DP05
2 Electrical ratings
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2.1
Absolute maximum ratings
Stressing the device above the rating listed in the “absolute maximum ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
program and other relevant quality documents.
Table 4. Absolute maximum ratings
Symbol
Parameter
VDD
VO
VTF and
VER
IO
VI
IGND
fCLK
Supply voltage - digital
Output voltage - LED driver
Open drain absolute voltage
Output current - LED driver
Input voltage - digital
GND terminal current
Clock frequency
Value
0 to 7
-0.5 to 20
0 to 7
80
-0.4 to VDD+0.4
2000
30
Unit
V
V
V
mA
V
mA
MHz
2.2
Thermal data
Table 5. Thermal data
Symbol
Parameter
TOPR
TSTG
RthJC
Operating temperature range
Storage temperature range
Thermal resistance junction-case
Value
-40 to 125
-40 to 150
25
Unit
°C
°C
°C/W
5/26
5 Page 
STP24DP05
Figure 6. SDO terminal
Equivalent ciwrcwuwit.DaantadShoeuettp4uU.tcsom
Figure 7. TF and EF
11/26
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet STP24DP05.PDF ] | |
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