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查询STP08CDC596TTR供应商
LED SINK DRIVER WITH FULL OUTPUT DETECTION
STP08CDC596
8-BIT CONSTANT CURRENT
■ 8 CONSTANT CURRENT OUTPUT
CHANNELS
■ ADJUST ABLE OUTPUT CURRENT
THROUGH ONE EXTERNAL RESISTOR
■ OPEN AND SHORT LINE, SHORT TO GND,
SHORT TO V-LED SUPPLY ERROR
DETECTION
■ SERIAL DATA IN/PARALLEL DATA OUT
■ SERIAL OUT CHANGE STATE ON THE
FALLING EDGES OF CL OCK
■ OUTPUT CURRENT: 20-120 mA
■ 25 MHz CLOCK FREQ.
DESCRIPTION
The STP08CDC596 is a monolithic,
medium-voltage, low current power 8-bit shift
register designed for LED panel display. The
STP08CDC596 contains a 8-bit serial-in,
parallel-out shift register that feeds a 8-bitD-type
storage register. In the output stage, eight
regulated current sources were designed to
provide 15-120mA constant current to drive the
LEDs.
The STP08CDC596 contains the built-IN error
detection feature. The device performs this
additional function wi thout any in crea se of t he pi n
number and any change of the pin function, if
compared to the standard device without error
detection. Consequently, choosing this device
does not mean to change the footprint on the
board. To perform this functionality mode, the
device needs a digital key coming from the
Microprocessor. The STP08CDC596 is able to
detect: open and sho rt on the LED line, short to
SO-16DIP-16
TSSOP16
GND, short to Led voltage supply. The data
mapping of output channels status detection is
provided by a feedbac k from the serial output to
the Microprocessor.
Trough an external resistor, users m ay adjust the
STP08CDC596 output current, controlling the light
intensity of LEDs.
The STP08CDC596 guarantees 16V output
driving capability, allowing users to connect more
LEDs in series. The high clock frequency, 25 MHz,
also satisfies the system requirement of high
volume data transmission.
The device is offered in DIP-16, SO-16 and
TSSOP -16 packages.
The STP08CDC596 is well suitable for traffic
display signs where the detection feature is
strongly required.
Table 1: Order Codes
Type Temp. Range Package Comments
STP08CDC596B1 -40°C to 125°C DIP-16 25 part per tube
STP08CDC596M -40°C to 125°C SO-16 (Tube) 50 parts per tube
STP08CDC596MTR -40°C to 125°C SO-16 (Tape & Reel) 2500 parts per reel
STP08CDC596TTR -40°C to 125°C TSSOP16 (Tape & Reel) 2500 parts per reel
Rev. 2
1/20October 2005
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STP08CDC596
Table 2: Current Accuracy
Output Voltage
≥ 0.7V TYP. ± 3% ± 10% 20 to 120 mA
Figure 1: Pin Connec t ion
Table 3: Pin Description
Current accuracy
Output Current
Between bits Between ICs
PIN N° Symbol Name and Function
1 GND Ground Terminal
2 SDI Serial data input terminal
3 CLK Clock input terminal
4 LE/DM1 Latch input terminal
5-12 OUT 0-7 Output terminal
13 OE/DM2 Output enable input terminal (active low)
14 SDO Serial data out terminal
15 R-EXT Constant Current programming
16 V
DD
5V Supply voltage terminal
Table 4: Absolute Maximum Ratings
Symbol Parameter Value Unit
V
I
f
T
T
V
I
V
GND
CLK
OPR
STG
Supply Voltage
DD
Output Voltage
O
Output Current
O
Input Voltage -0.4 to VDD+0.4
I
GND Termin al Current
Clock Frequency
Operating Temperature Range
Storage Temperature Range
0 to 7 V
-0.5 to 16 V
120 mA
980 mA
25 MHz
-40 to +125 °C
-55 to +150 °C
V
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
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STP08CDC596
Table 5: Thermal Data
Symbol Parameter DIP-16 SO-16 TSSOP16 Unit
R
thj-amb
Table 6: Recommended Operating Conditions
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
DD
V
O
I
O
I
OH
I
OL
V
IH
V
IL
t
wLAT
t
wCLK
t
wEN
t
SETUP(D)
t
HOLD(D)
t
SETUP(L)
f
CLK
(1) If the device is connected in cascade, it may not be possible achieve the maximum data transfer. Please considered the timings carefully.
(2) In norm al mode the OE/DM2 must rem ai n l ow at least two c l ock cycles.
Table 7: Electrical Characteristics (VDD=5V, T = 25°C, unless otherwise specified.)
Thermal Resistance Junction-ambient
90 125 140 °C/W
Supply Voltage 3.3 5.5 V
Output Voltage 16.0 V
Output Current OUTn 15 120 mA
Output Current SERIAL-OUT +1 mA
Output Current SERIAL-OUT -1 mA
Input Voltage 0.7V
DD
Input Voltage -0.3 0.3V
VDD+0.3 V
DD
V
LE/DM1 Pulse Width VDD = 3.0 to 3.6V 10 20 ns
CLK Pulse Width 10 20 ns
OE/DM2 Pulse Width (1) 120 400 ns
Setup Time for DATA 5 20 ns
Hold Time for DATA 4 15 ns
Setup Time for LATCH 8 15 ns
Clock Frequency (2) 25 MHz
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
V
I
V
V
I
OL1
I
OL2
∆I
∆I
R
SIN(up)
R
SIN(down)
I
DD(OFF1)
I
DD(OFF2)
I
DD(OFF3)
I
DD(ON1)
I
DD(ON2)
Input Voltage High Level 0.7V
IH
Input Voltage Low Level GND 0.3V
IL
Output Leakage Current VOH = 16 V 10 µA
OH
Output Voltage (Serial-OUT) IOL = 1mA 0.4 V
OL
Output Voltage (Serial-OUT) IOH = -1mA VDD-0.4V V
OH
Output Current VO = 0.7V R
Output Current Error
OL1
between bit (All Output ON)
OL2
VO = 0.7V R
VO = 0.7V R
VO = 0.7V R
= 910 Ω 18.8 20.9 24.00 mA
EXT
= 360 Ω 46.00 51.5 56.5 mA
EXT
= 910 Ω ± 2 ± 5 %
EXT
= 360 Ω ± 1 ± 4 %
EXT
DD
Pull-up Resistor 150 300 600 KΩ
Pull-down Resistor 100 200 400 KΩ
Supply Current (OFF) R
Supply Current (ON) R
= OPEN OUT 0 to 7 = OFF 0.45 0.7 mA
EXT
R
= 910 Ω OUT 0 to 7 = OFF 3.0 6.0
EXT
R
= 360 Ω OUT 0 to 7 = OFF 8.2 12.0
EXT
= 910 Ω OUT 0 to 7 = ON 3.1 6.2
EXT
R
= 360 Ω OUT 0 to 7 = ON 8.4 12.8
EXT
V
DD
DD
V
V
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STP08CDC596
Table 8: Switching Characteristics (VDD=3.3 to 5.5V, T = 25°C, unless otherwise specified.)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
t
PLH1
t
PLH2
t
PLH3
t
PLH
t
PHL1
t
PHL2
t
PHL3
t
PHL
Propagation Delay Time,
OUTn, LE/DM1 = H,
CLKOE/DM2 = L
Propagation Delay Time,
LE/DM1-OUTn, OE/DM2 = L
Propagation Delay Time,
VDD = 3 V VIH = V
DD
VIL = GND CL = 13pF
IO = 40mA VL = 3 V
R
= 470 Ω RL = 65 Ω
EXT
180 280 ns
150 280 ns
140 280 ns
OE/DM2-OUTn, LE/DM1 = H
Propagation Delay Time,
25 35 ns
CLK-SDO
Propagation Delay Time,
OUTn, LE/DM1 = H,
CLK-
30 60 ns
OE/DM2 = L
Propagation Delay Time,
30 50 ns
LE/DM1-OUTn, OE/DM2 = L
Propagation Delay Time,
35 70 ns
OE/DM2-OUTn, LE/DM1 = H
Propagation Delay Time,
30 40 ns
CLK-SDO
t
Output Rise Time 220 ns
r
t
Output Fall Time 20 ns
f
EQUIVALENT CIRCUIT OF INPUTS AND OUTPUTS
Figure 2: OE/DM2 Terminal
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Figure 3: LE/DM1 Ter m i nal
Figure 4: CLK, SDI Terminal
STP08CDC596
Figure 5: SDO Termi nal
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STP08CDC596
Figure 6: Block Diagram
Figure 7: Timing Dia gram
In norma l mode the OE/DM2 must remain low at least two clock cycles.
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Figure 8: Clock, Serial-In, Serial-Out
Figure 9: Clock, Serial-In, Latch, Enable, Outputs
STP08CDC596
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STP08CDC596
Figure 10: Output s
TEST CIRCUIT
Figure 11: DC Characteristic
Figure 12: AC Characteristic
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RUNNING THE DETECTION MODE
Phase One: “Entering In Detection Mode”
From the “Normal Mode” condition the device can
switch to the “Error Detection Mode” by a logic
sequence on the OE/DM2 and LE/DM1 pins as
showed in the following Table and Diagram:
Table 9: En te rin g In D et ec tio n Truth Table
CLK 1° 2° 3° 4° 5°
OE/DM2 H L H H H
LE/DM1 L L L H L
Figure 13: Enter ing In Detection Timing Diagram
STP08CDC596
After these five CLK cycles the device goes into
the” Error Detection Mode” and at the 6
th
rise front
of CLK the SDI data are ready for the sampling.
Phase Two: “Error Detection”
The eight data bits m ust be set “1” in order to s et
ON all the outputs during the detection. The data
are latched by LE/ DM1 and after that the outputs
are ready for the detection process. When the
Figure 14: Detection Diagram
Micro controller switches the OE/DM2 to LOW, the
device drives the LEDs in order to analyze if an
OPEN or SHORT condition has occurred.
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STP08CDC596
The LEDs status will be detected al least in 2
microseconds and after this time the micro
controller puts OE in HIGH state and the output
data det ec t io n r e s ult w ill g o t o the micropr oc e s s or
The detection dat a format is the same of data i n
normal mode. As soon as all the detection data
bits are available on the serial line, the device may
go back to normal mode operation.
via SDO.
CONDITIONS IN ORDER TO GET A SUCCESSFULLY DETECTION CONDITION
Table 10: Detection Condition (V
SW-1 or SW-3b
SW-2 or SW-3a
where: IO = the output current prog ram m ed by the R
Open Line or Output Short
to GND detected
Short on LED or Short to
V-LED detected
= 3.3 to 5 V Temp. Range -40 to 85°C)
DD
==> I
==> VO ≥ 2.4 V
EXT, IODEC
≤ 0.5 x I
ODEC
= the det e c ted output current in detection mode.
O
No error detected
No error detected
Figure 15: De t ection Mode
==> I
==> VO ≤ 2.2 V
ODEC
≥ 0.5 x I
O
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STP08CDC596
Phase Three: “Resuming to Normal Mode”
The sequence for re-entering in normal mode is showed in the following Table and diagram:
Table 11: Resuming to Normal Mode Timi ng Diagram
CLK 1° 2° 3° 4° 5°
OE/DM2 H L H H H
LE/DM1 L L L L L
Figure 16: Resuming to Normal Mode Timing Diagram
For proper device operation the "Entering in detection" sequence must be follow by a "Resume Mode" sequence, isn’t possible to insert consecutive equal sequence.
11/20
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STP08CDC596
Figure 17: T ypical Output Current-R
Resistor
EXT
Figure 18: Power Dissipation vs Temperature
Package
Figure 19: T ypical Dropout Voltage vs Output
Current
Figure 20: T ypical Output Current vs ±∆IOL(%)
12/20
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Figure 21: Timing example for Open and/or Short detection
STP08CDC596
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STP08CDC596
Plastic DIP-16 (0.25) MECHANICAL DATA
mm. inch
DIM.
MIN. TYP MAX. MIN. TYP. MAX.
a1 0.51 0.020
B 0.77 1.65 0.030 0.065
b 0.5 0.020
b1 0.25 0.010
D 20 0.787
E 8.5 0.335
e 2.54 0.100
e3 17.78 0.700
F 7.1 0.280
I 5.1 0.201
L 3.3 0.130
Z 1.27 0.050
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P001C
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SO-16 MECHANICAL DATA
STP08CDC596
DIM.
A 1.75 0.068
a1 0.1 0.25 0.004 0.010
a2 1.64 0.063
b 0.35 0.46 0.013 0.018
b1 0.19 0.25 0.007 0.010
C 0.5 0.019
c1 45° (typ.)
D 9.8 10 0.385 0.393
E 5.8 6.2 0.228 0.244
e 1.27 0.050
e3 8.89 0.350
F 3.8 4.0 0.149 0.157
G 4.6 5.3 0.181 0.208
L 0.5 1.27 0.019 0.050
M 0.62 0.024
S8° (max.)
MIN. TYP MAX. MIN. TYP. MAX.
mm. inch
0016020D
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STP08CDC596
TSSOP16 MECHANICAL DATA
mm. inch
DIM.
MIN. TYP MAX. MIN. TYP. MAX.
A 1.2 0.047
A1 0.05 0.15 0.002 0.004 0.006
A2 0.8 1 1.05 0.031 0.039 0.041
b 0.19 0.30 0.007 0.012
c 0.09 0.20 0.004 0.0079
D 4.9 5 5.1 0.193 0.197 0.201
E 6.2 6.4 6.6 0.244 0.252 0.260
E1 4.3 4.4 4.48 0.169 0.173 0.176
e 0.65 BSC 0.0256 BSC
K0˚ 8˚0˚ 8˚
L 0.45 0.60 0.75 0.018 0.024 0.030
A2
A
A1
b
e
c
K
L
E
D
E1
PIN 1 IDENTIFICATION
16/20
1
0080338D
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STP08CDC596
Tape & Reel SO-16 MECHANICAL DAT A
mm. inch
DIM.
MIN. TYP MAX. MIN. TYP. MAX.
A 330 12.992
C 12.8 13.2 0.504 0.519
D 20.2 0.795
N 60 2.362
T 22.4 0.882
Ao 6.45 6.65 0.254 0.262
Bo 10.3 10.5 0.406 0.414
Ko 2.1 2.3 0.082 0.090
Po 3.9 4.1 0.153 0.161
P 7.9 8.1 0.311 0.319
17/20
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STP08CDC596
Tape & Reel TSSOP16 MECHANICAL DATA
mm. inch
DIM.
MIN. TYP MAX. MIN. TYP. MAX.
A 330 12.992
C 12.8 13.2 0.504 0.519
D 20.2 0.795
N 60 2.362
T 22.4 0.882
Ao 6.7 6.9 0.264 0.272
Bo 5.3 5.5 0.209 0.217
Ko 1.6 1.8 0.063 0.071
Po 3.9 4.1 0.153 0.161
P 7.9 8.1 0.311 0.319
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Table 12: Revision History
Date Revision Description of Change s
15-Jun-2005 1 First Release.
11-Oct-2005 2 Minor Revision
STP08CDC596
19/20
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STP08CDC596
I
s
o
d
b
t
t
t
a
nformation furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequence
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uthorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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