STP08CDC596 [STMICROELECTRONICS]
8-BIT CONSTANT CURRENT LED SINK DRIVER WITH FULL OUTPUT DETECTION; WITH FULL输出检测8位恒流LED驱动器
| 型号： | STP08CDC596 |
| 厂家： | 
ST |
| 描述： | 8-BIT CONSTANT CURRENT LED SINK DRIVER WITH FULL OUTPUT DETECTION |
| 文件： | 总20页 (文件大小：431K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
STP08CDC596
8-BIT CONSTANT CURRENT
LED SINK DRIVER WITH FULL OUTPUT DETECTION
■
■
■
8 CONSTANT CURRENT OUTPUT
CHANNELS
ADJUSTABLE OUTPUT CURRENT
THROUGH ONE EXTERNAL RESISTOR
OPEN AND SHORT LINE, SHORT TO GND,
SHORT TO V-LED SUPPLY ERROR
DETECTION
DIP-16
SO-16
■
■
SERIAL DATA IN/PARALLEL DATA OUT
SERIAL OUT CHANGE STATE ON THE
FALLING EDGES OF CLOCK
OUTPUT CURRENT: 20-120 mA
25 MHz CLOCK FREQ.
■
■
DESCRIPTION
The STP08CDC596
TSSOP16
is
a
monolithic,
medium-voltage, low current power 8-bit shift
register designed for LED panel display. The
GND, short to Led voltage supply. The data
mapping of output channels status detection is
provided by a feedback from the serial output to
the Microprocessor.
Trough an external resistor, users may adjust the
STP08CDC596 output current, controlling the light
intensity of LEDs.
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 without any increase of the pin
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 short on the LED line, short to
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
STP08CDC596M
-40°C to 125°C
-40°C to 125°C
-40°C to 125°C
-40°C to 125°C
DIP-16
25 part per tube
50 parts per tube
2500 parts per reel
2500 parts per reel
SO-16 (Tube)
STP08CDC596MTR
STP08CDC596TTR
SO-16 (Tape & Reel)
TSSOP16 (Tape & Reel)
Rev. 2
October 2005
1/20
STP08CDC596
Table 2: Current Accuracy
Output Voltage
Current accuracy
Output Current
Between bits
Between ICs
≥ 0.7V
TYP. ± 3%
± 10%
20 to 120 mA
Figure 1: Pin Connection
Table 3: Pin Description
PIN N°
Symbol
Name and Function
1
2
GND
SDI
Ground Terminal
Serial data input terminal
Clock input terminal
Latch input terminal
Output terminal
3
CLK
4
LE/DM1
OUT 0-7
OE/DM2
SDO
5-12
13
14
15
16
Output enable input terminal (active low)
Serial data out terminal
R-EXT
Constant Current programming
5V Supply voltage terminal
V
DD
Table 4: Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
V
Supply Voltage
0 to 7
-0.5 to 16
120
V
V
DD
V
Output Voltage
O
I
Output Current
mA
V
O
V
Input Voltage
-0.4 to V +0.4
I
DD
I
GND Terminal Current
Clock Frequency
980
25
mA
MHz
°C
GND
f
CLK
T
Operating Temperature Range
Storage Temperature Range
-40 to +125
-55 to +150
OPR
T
°C
STG
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
2/20
STP08CDC596
Table 5: Thermal Data
Symbol
Parameter
DIP-16
SO-16
TSSOP16
140
Unit
R
Thermal Resistance Junction-ambient
90
125
°C/W
thj-amb
Table 6: Recommended Operating Conditions
Symbol
Parameter
Supply Voltage
Test Conditions
Min.
Typ.
Max.
5.5
Unit
V
V
3.3
DD
V
Output Voltage
16.0
120
+1
V
O
I
Output Current
OUTn
15
mA
mA
mA
V
O
I
Output Current
SERIAL-OUT
SERIAL-OUT
OH
I
Output Current
-1
OL
V
Input Voltage
0.7V
V
+0.3
IH
DD
DD
V
Input Voltage
-0.3
0.3V
V
IL
DD
t
LE/DM1 Pulse Width
CLK Pulse Width
OE/DM2 Pulse Width (1)
Setup Time for DATA
Hold Time for DATA
Setup Time for LATCH
Clock Frequency (2)
V
= 3.0 to 3.6V
DD
10
10
120
5
20
20
ns
wLAT
wCLK
t
ns
t
400
20
ns
wEN
SETUP(D)
t
ns
t
4
15
ns
HOLD(D)
t
8
15
ns
SETUP(L)
f
25
MHz
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 normal mode the OE/DM2 must remain low at least two clock cycles.
Table 7: Electrical Characteristics (V =5V, T = 25°C, unless otherwise specified.)
DD
Symbol
Parameter
Test Conditions
Min.
0.7V
Typ.
Max.
Unit
V
V
Input Voltage High Level
Input Voltage Low Level
Output Leakage Current
Output Voltage (Serial-OUT)
Output Voltage (Serial-OUT)
Output Current
V
DD
IH
DD
V
I
GND
0.3V
V
IL
DD
V
= 16 V
10
µA
V
OH
OH
V
I
I
= 1mA
0.4
OL
OH
OL
V
I
= -1mA
V
-0.4V
V
OH
DD
V
V
V
V
= 0.7V R
= 0.7V R
= 0.7V R
= 0.7V R
= 910 Ω
= 360 Ω
= 910 Ω
= 360 Ω
18.8
20.9
51.5
± 2
24.00
56.5
± 5
mA
mA
%
OL1
OL2
O
O
O
O
EXT
EXT
EXT
EXT
I
46.00
∆I
∆I
Output Current Error
between bit (All Output ON)
OL1
OL2
± 1
± 4
%
R
Pull-up Resistor
150
100
300
200
0.45
3.0
600
400
0.7
KΩ
KΩ
mA
SIN(up)
SIN(down)
DD(OFF1)
DD(OFF2)
DD(OFF3)
R
Pull-down Resistor
Supply Current (OFF)
I
I
I
R
R
R
R
R
= OPEN OUT 0 to 7 = OFF
= 910 Ω OUT 0 to 7 = OFF
= 360 Ω OUT 0 to 7 = OFF
= 910 Ω OUT 0 to 7 = ON
= 360 Ω OUT 0 to 7 = ON
EXT
EXT
EXT
EXT
EXT
6.0
8.2
12.0
6.2
I
Supply Current (ON)
3.1
DD(ON1)
DD(ON2)
I
8.4
12.8
3/20
STP08CDC596
Table 8: Switching Characteristics (V =3.3 to 5.5V, T = 25°C, unless otherwise specified.)
DD
Symbol
Parameter
Test Conditions
= 3 V
Min.
Typ.
Max.
Unit
t
Propagation Delay Time,
CLK-OUTn, LE/DM1 = H,
OE/DM2 = L
V
V
I
V
= V
DD
180
280
ns
PLH1
DD
IH
= GND
C = 13pF
IL
L
= 40mA
V = 3 V
t
t
Propagation Delay Time,
LE/DM1-OUTn, OE/DM2 = L
150
140
25
280
280
35
ns
ns
ns
ns
O
L
PLH2
R
= 470 Ω
R = 65 Ω
EXT
L
Propagation Delay Time,
OE/DM2-OUTn, LE/DM1 = H
PLH3
t
Propagation Delay Time,
CLK-SDO
PLH
t
Propagation Delay Time,
CLK-OUTn, LE/DM1 = H,
OE/DM2 = L
30
60
PHL1
t
t
Propagation Delay Time,
LE/DM1-OUTn, OE/DM2 = L
30
35
30
50
70
40
ns
ns
ns
PHL2
Propagation Delay Time,
OE/DM2-OUTn, LE/DM1 = H
PHL3
t
Propagation Delay Time,
CLK-SDO
PHL
t
Output Rise Time
Output Fall Time
220
20
ns
ns
r
t
f
EQUIVALENT CIRCUIT OF INPUTS AND OUTPUTS
Figure 2: OE/DM2 Terminal
4/20
STP08CDC596
Figure 3: LE/DM1 Terminal
Figure 4: CLK, SDI Terminal
Figure 5: SDO Terminal
5/20
STP08CDC596
Figure 6: Block Diagram
Figure 7: Timing Diagram
In normal mode the OE/DM2 must remain low at least two clock cycles.
6/20
STP08CDC596
Figure 8: Clock, Serial-In, Serial-Out
Figure 9: Clock, Serial-In, Latch, Enable, Outputs
7/20
STP08CDC596
Figure 10: Outputs
TEST CIRCUIT
Figure 11: DC Characteristic
Figure 12: AC Characteristic
8/20
STP08CDC596
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: Entering In Detection Truth Table
CLK
1°
2°
3°
4°
5°
OE/DM2
LE/DM1
H
L
L
L
H
L
H
H
H
L
Figure 13: Entering In Detection Timing Diagram
After these five CLK cycles the device goes into
th
the” Error Detection Mode” and at the 6 rise front
of CLK the SDI data are ready for the sampling.
Phase Two: “Error Detection”
The eight data bits must be set “1” in order to set
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
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.
Figure 14: Detection Diagram
9/20
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 detection result will go to the microprocessor
via SDO.
The detection data format is the same of data in
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.
CONDITIONS IN ORDER TO GET A SUCCESSFULLY DETECTION CONDITION
Table 10: Detection Condition (V = 3.3 to 5 V Temp. Range -40 to 85°C)
DD
Open Line or Output Short ==> I
to GND detected
≤ 0.5 x I
==> I
≥ 0.5 x I
ODEC O
ODEC
O
SW-1 or SW-3b
SW-2 or SW-3a
No error detected
No error detected
Short on LED or Short to ==> V ≥ 2.4 V
==> V ≤ 2.2 V
O
O
V-LED detected
where: I = the output current programmed by the R
O
I
= the detected output current in detection mode.
EXT, ODEC
Figure 15: Detection Mode
10/20
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 Timing Diagram
CLK
1°
2°
3°
4°
5°
OE/DM2
LE/DM1
H
L
L
L
H
L
H
L
H
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 con-
secutive equal sequence.
11/20
STP08CDC596
Figure 17: Typical Output Current-R
Resistor
Figure 19: Typical Dropout Voltage vs Output
EXT
Current
Figure 20: Typical Output Current vs ∆I (%)
Figure 18: Power Dissipation vs Temperature
OL
Package
12/20
STP08CDC596
Figure 21: Timing example for Open and/or Short detection
13/20
STP08CDC596
Plastic DIP-16 (0.25) MECHANICAL DATA
mm.
TYP
inch
TYP.
DIM.
MIN.
0.51
0.77
MAX.
MIN.
0.020
0.030
MAX.
a1
B
b
1.65
0.065
0.5
0.020
0.010
b1
D
E
e
0.25
20
0.787
8.5
2.54
17.78
0.335
0.100
0.700
e3
F
7.1
5.1
0.280
0.201
I
L
3.3
0.130
Z
1.27
0.050
P001C
14/20
STP08CDC596
SO-16 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
1.75
0.25
1.64
0.46
0.25
MIN.
MAX.
0.068
0.010
0.063
0.018
0.010
A
a1
a2
b
0.1
0.004
0.35
0.19
0.013
0.007
b1
C
0.5
0.019
c1
D
45° (typ.)
9.8
5.8
10
0.385
0.228
0.393
0.244
E
6.2
e
1.27
8.89
0.050
0.350
e3
F
3.8
4.6
0.5
4.0
5.3
0.149
0.181
0.019
0.157
0.208
0.050
0.024
G
L
1.27
0.62
M
S
8° (max.)
0016020D
15/20
STP08CDC596
TSSOP16 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
1.2
MIN.
MAX.
0.047
0.006
0.041
0.012
0.0079
0.201
0.260
0.176
A
A1
A2
b
0.05
0.8
0.15
1.05
0.30
0.20
5.1
0.002
0.031
0.007
0.004
0.193
0.244
0.169
0.004
0.039
1
0.19
0.09
4.9
c
D
5
6.4
0.197
0.252
E
6.2
6.6
E1
e
4.3
4.4
4.48
0.173
0.65 BSC
0.0256 BSC
K
0˚
8˚
0˚
8˚
L
0.45
0.60
0.75
0.018
0.024
0.030
A2
A
K
L
b
e
A1
c
E
D
E1
PIN 1 IDENTIFICATION
1
0080338D
16/20
STP08CDC596
Tape & Reel SO-16 MECHANICAL DATA
mm.
TYP
inch
TYP.
DIM.
MIN.
MAX.
330
MIN.
MAX.
12.992
0.519
A
C
12.8
20.2
60
13.2
0.504
0.795
2.362
D
N
T
22.4
6.65
10.5
2.3
0.882
0.262
0.414
0.090
0.161
0.319
Ao
Bo
Ko
Po
P
6.45
10.3
2.1
0.254
0.406
0.082
0.153
0.311
3.9
4.1
7.9
8.1
17/20
STP08CDC596
Tape & Reel TSSOP16 MECHANICAL DATA
mm.
TYP
inch
TYP.
DIM.
MIN.
MAX.
330
MIN.
MAX.
12.992
0.519
A
C
12.8
20.2
60
13.2
0.504
0.795
2.362
D
N
T
22.4
6.9
5.5
1.8
4.1
8.1
0.882
0.272
0.217
0.071
0.161
0.319
Ao
Bo
Ko
Po
P
6.7
5.3
1.6
3.9
7.9
0.264
0.209
0.063
0.153
0.311
18/20
STP08CDC596
Table 12: Revision History
Date
Revision
Description of Changes
15-Jun-2005
11-Oct-2005
1
2
First Release.
Minor Revision
19/20
STP08CDC596
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
All other names are the property of their respective owners
© 2005 STMicroelectronics - All Rights Reserved
STMicroelectronics group of companies
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20/20
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