Page 1
Low voltage 16-bit constant current LED sink driver
Features
■ Low voltage power supply down to 3V
■ 16 constant current output channels
■ Adjustable output current through external
resistor
■ Serial Data IN/Parallel Data OUT
■ Can be driven by a 3.3V microcontroller
■ Output current: 5-100mA
■ Max clock frequency 30MHz
■ ESD protection 2.5kV HBM, 200V MM
Description
TSSOP24
STP16CP05
SO-24
TSSOP24
(exposed pad)
The STP16CP05 is a monolithic, low voltage, low
current power 16-bit shift register designed for
LED panel displays. The STP16CP05 contains a
16-bit serial-in, parallel-out shift register that
feeds a 16-bit, D-type storage register. In the
output stage, sixteen regulated current sources
provide from 5mA to 100mA constant current to
drive the LEDs.
The output current setup time is 40ns (typ), thus
improving the system performance.
The LEDs' brightness can be controlled by using
an external resistor to adjust the STP16CP05
output current.
Table 1. Device summary
Order codes Package Packaging
STP16CP05MTR SO-24 1000 parts per reel
STP16CP05TTR TSSOP24 2500 parts per reel
STP16CP05XTTR TSSOP24 Exposed Pad 2500 parts per reel
The STP16CP05 guarantees a 20V output driving
capability, allowing users to connect more LEDs in
series.The high clock frequency, 30MHz, makes
the device suitable for high data rate
transmission. The 3.3V voltage supply is useful in
applications that interface with a 3.3V micro
controller.
July 2007 Rev 4 1/25
www.st.com
25
Page 2
Contents STP16CP05
Contents
1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Pin connection and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Equivalent circuit and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
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Page 3
STP16CP05 Summary description
1 Summary description
Table 2. Typical current accuracy
Output voltage
Current accuracy
Between bits Between ICs
≥ 1.3V ±1.5% ±5% ≥20 to 100 mA 3.3V to 5V 25°C
1.1 Pin connection and description
Figure 2. Pin connection
Output current
V
DD
temp.
Note: The exposed pad is electrically not connected
Table 3. Pin description
PIN N° Symbol Name and function
1 GND Ground terminal
2 SDI Serial data input terminal
3 CLK Clock input terminal
4 LE Latch input terminal
5-20 OUT 0-15 Output terminal
21 OE
22 SDO Serial data out terminal
23 R-EXT Input terminal of an external resistor for constant current programing
24 V
DD
Input terminal of output enable (active low)
Supply voltage terminal
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Page 4
Electrical ratings STP16CP05
2 Electrical ratings
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 Value Unit
V
V
I
V
I
GND
f
CLK
DD
O
Supply voltage 0 to 7 V
Output voltage -0.5 to 20 V
O
Output current 100 mA
Input voltage -0.4 to VDD+0.4 V
I
GND terminal current 1600 mA
Clock frequency 50 MHz
2.2 Thermal data
Table 5. Thermal data
Symbol Parameter Value Unit
T
OPR
T
STG
R
thJC
1. The exposed pad should be soldered directly to the PCB to realize the thermal benefits.
Operating temperature range -40 to +125 °C
Storage temperature range -55 to +150 °C
Thermal resistance junction-case
DIP-24 60 °C/W
TSSOP24 85 °C/W
(1)
TSSOP24
Exposed Pad
SO-24 75 °C/W
37.5 °C/W
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STP16CP05 Electrical ratings
2.3 Recommended operating conditions
Table 6. Recommended operating conditions at 25°C
Symbol Parameter Test conditions Min Typ Max Unit
V
V
I
I
V
V
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.
Supply voltage 3.0 5.5 V
DD
Output voltage 20 V
O
Output current OUTn 3 100 mA
I
O
Output current SERIAL-OUT +1 mA
OH
Output current SERIAL-OUT -1 mA
OL
Input voltage 0.7V
IH
Input voltage -0.3 0.3V
IL
LE pulse width
DD
20 ns
CLK pulse width 16 ns
OE pulse width 200 ns
VDD = 3.3V to 5.0V
Setup time for DATA 20 ns
Hold time for DATA 15 ns
Setup time for LATCH 15 ns
Clock frequency Cascade operation
(1)
VDD+0.3 V
DD
30 MHz
V
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Page 6
Electrical characteristics STP16CP05
3 Electrical characteristics
Table 7. Electrical characteristics
(V
= 3.3V to 5V, T = 25°C, unless otherwise specified.)
DD
Symbol Parameter Test conditions Min Typ Max Unit
V
IH
V
IL
I
OH
V
OL
V
OH
I
OL1
OL2
I
OL3
∆I
OL1
OL2
∆I
OL3
R
SIN(up)
R
SIN(down)
I
DD(OFF1)
I
DD(OFF2)
I
DD(ON1)
I
DD(ON2)
Input voltage high level 0.7V
DD
Input voltage low level GND 0.3V
V
DD
DD
V
V
Output leakage current VOH = 20V 10 µA
Output voltage
(Serial-OUT)
Output voltage
(Serial-OUT)
Output current
Output current error
between bit
(All Output ON)
= 1mA 0.4 V
I
OL
= -1mA VDD-0.4V V
I
OH
= 0.3V, R
V
O
VO = 0.3V, R
VO = 1.3V, R
= 0.3VR
V
O
VO = 0.3VR
VO = 1.3VR
= 3.9kΩ 4.25 5 5.75
ext
= 970Ω 19 20 21
ext
= 190Ω 96 100 104
ext
= 3.9kΩ ± 5 ± 8
EXT
= 970Ω ± 1.5 ± 3
EXT
=190Ω ± 1.2 ± 3
EXT
mAI
%∆I
Pull-up resistor 150 300 600 KΩ
Pull-down resistor 100 200 400 KΩ
R
= 970
EXT
OUT 0 to 15 = OFF
4
Supply current (OFF)
R
= 240
EXT
OUT 0 to 15 = OFF
11.2
mA
R
= 970
EXT
OUT 0 to 15 = ON
4.5
Supply current (ON)
R
= 240
EXT
OUT 0 to 15 = ON
11.7
Thermal Thermal protection 170 °C
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STP16CP05 Electrical characteristics
Table 8. Switching characteristics (V
= 5V, T = 25°C, unless otherwise specified.)
DD
Symbol Parameter Test conditions Min Typ Max Unit
V
= 3.3V 62 90
t
PLH1
t
PLH2
t
PLH3
t
Propagation delay time,
CLK-OUTn
Propagation delay time,
LE-OUTn, OE = L
Propagation delay time,
OE-OUTn, LE = H
Propagation delay time,
PLH
CLK-SDO
, LE = H, OE = L
Propagation delay time,
t
PHL1
t
PHL2
t
PHL3
t
CLK-OUTn, LE = H,
= L
OE
Propagation delay time,
LE-OUTn
Propagation delay time,
OE-OUTn, LE = H
Propagation delay time,
PHL
CLK-SDO
, OE = L
V
= V
IH
DD
VIL = GND CL = 10pF
= 20mA VL = 3.0 V
I
O
R
= 1KΩ RL = 60 Ω
EXT
Output rise time
t
10~90% of voltage
ON
waveform
Output fall time
t
90~10% of voltage
OFF
waveform
CLK rise time
t
r
t
CLK fall time
f
1. In order to achieve high cascade data transfer,please consider tr/tf timings carefully.
(1)
(1)
DD
= 5V 39 55
V
DD
= 3.3V 60 88
V
DD
= 5V 41 57
V
DD
= 3.3V 65 95
V
DD
= 5V 43 60
V
DD
= 3.3V 8 12
V
DD
= 5V 5 7
V
DD
V
= 3.3V 18 25
DD
= 5V 16 22
V
DD
VDD = 3.3V 19 25
= 5V 15 21
V
DD
= 3.3V 23 31
V
DD
= 5V 20 27
V
DD
= 3.3V 8.5 13
V
DD
= 5V 5.5 8
V
DD
VDD = 3.3V 100 130
= 5V 22 35
V
DD
VDD = 3.3V 13 18
= 5V 18 25
V
DD
5000 ns
5000 ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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Equivalent circuit and outputs STP16CP05
4 Equivalent circuit and outputs
Figure 3. OE terminal
Figure 4. LE terminal
Figure 5. CLK, SDI terminal
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Page 9
STP16CP05 Equivalent circuit and outputs
Figure 6. SDO terminal
Figure 7. Block diagram
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Page 10
Timing diagrams STP16CP05
5 Timing diagrams
Table 9. Truth table
CLOCK LE OE
H L Dn Dn ..... Dn - 7 ..... Dn -15 Dn - 15
L L Dn + 1 No Change Dn - 14
H L Dn + 2 Dn + 2 ..... Dn - 5 ..... Dn -13 Dn - 13
X L Dn + 3 Dn + 2 ..... Dn - 5 ..... Dn -13 Dn - 13
X H Dn + 3 OFF Dn - 13
SERIAL-
IN
OUT0 ............. OUT7 ................ OUT15 SDO
Note: OUTn = ON when Dn = H OUTn = OFF when Dn = L
Figure 8. Timing diagram
Note: The latches circuit holds data when the LE terminal is Low.
1 When LE terminal is at High level, latch circuit hold the data it passes from the input to the
output.
2 When OE
terminal is at Low level, output terminals OUT0 to OUT15 respond to the data,
either ON or OFF.
3 When OE
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terminal is at High level, it switches off all the data on the output terminal.
Page 11
STP16CP05 Timing diagrams
Figure 9. Clock, serial-in, serial-out
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Timing diagrams STP16CP05
Figure 10. Clock, serial-in, latch, enable, outputs
Figure 11. Outputs
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Page 13
STP16CP05 Typical characteristics
6 Typical characteristics
Figure 12. Output current-R
Table 10. Output current-R
Rext (Ohm) Output current (mA)
976 20
780 25
652 30
560 35
488 40
433 45
389 50
354 55
325 60
300 65
278 70
259 75
241 80
229 85
215 90
EXT
EXT
resistor
resistor
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Typical characteristics STP16CP05
Figure 13. Output current vs ± ∆IOL(%)
Figure 14. I
vs drop out voltage (V
SET
drop
)
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STP16CP05 Typical characteristics
Figure 15. IDD ON\OFF
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Test circuit STP16CP05
7 Test circuit
Figure 16. DC characteristic
Figure 17. AC characteristic
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Page 17
STP16CP05 Test circuit
Figure 18. Typical application schematic
Note: V
C = 10µF
+
STP16CP05
will be determined by the VF of the LEDs
L
Test condition: Temp. = 25°C, V
= 3.0V, VIN = VDD, CL = 10pF, Freq. = 1MHz,
DD
Ch1 = CLK, Ch2 = SDI, Ch3 = OUTn , Ch4 = V
Figure 19. Turn ON output current setup
OUT
Figure 20. Turn OFF output current setup
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Package mechanical data STP16CP05
8 Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect. The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com
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STP16CP05 Package mechanical data
Table 11. TSSOP24 mechanical data
mm. inch
Dim.
Min. Typ Max. Min. Typ. Max.
A 1.1 0.043
A1 0.05 0.15 0.002 0.006
A2 0.9 0.035
b 0.19 0.30 0.0075 0.0118
c 0.09 0.20 0.0035 0.0079
D 7.7 7.9 0.303 0.311
E 4.3 4.5 0.169 0.177
e 0.65 BSC 0.0256 BSC
H 6.25 6.5 0.246 0.256
K 0° 8° 0° 8°
L 0.50 0.70 0.020 0.028
Figure 21. TSSOP24 package dimensions
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Package mechanical data STP16CP05
Table 12. Tape and reel TSSOP24
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 6.8 7 0.268 0.276
Bo 8.2 8.4 0.323 0.331
Ko 1.7 1.9 0.067 0.075
Po 3.9 4.1 0.153 0.161
P 11.9 12.1 0.468 0.476
Figure 22. Reel dimensions
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STP16CP05 Package mechanical data
Table 13. SO-24 mechanical data
mm. inch
Dim.
Min. Typ Max. Min. Typ. Max.
A 2.65 0.104
a1 0.1 0.2 0.004 0.008
a2 2.45 0.096
b 0.35 0.49 0.014 0.019
b1 0.23 0.32 0.009 0.012
C 0.5 0.020
c1 45°(typ.)
D 15.20 15.60 0.598 0.614
E 10.00 10.65 0.393 0.419
e 1.27 0.050
e3 13.97 0.550
F 7.40 7.60 0.291 0.300
L 0.50 1.27 0.020 0.050
S °(max.) 8
Figure 23. SO-24 package dimensions
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Package mechanical data STP16CP05
Table 14. Tape and reel SO-24
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 30.4 1.197
Ao 10.8 11.0 0.425 0.433
Bo 15.7 15.9 0.618 0.626
Ko 2.9 3.1 0.114 0.122
Po 3.9 4.1 0.153 0.161
P 11.9 12.1 0.468 0.476
Figure 24. Reel dimensions
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Page 23
STP16CP05 Package mechanical data
Table 15. TSSOP24 exposed-pad
mm inch
Dim.
Min. Typ. Max. Min. Typ. Max.
A 1.2 0.047
A1 0.15 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 0.0089
D 7.7 7.8 7.9 0.303 0.307 0.311
D1 2.7 0.106
E 6.2 6.4 6.6 0.244 0.252 0.260
E1 4.3 4.4 4.5 0.169 0.173 0.177
E2 1.5 0.059
e 0.65 0.0256
K 0° 8° 0° 8°
L 0.45 0.60 0.75 0.018 0.024 0.030
Figure 25. TSSOP24 dimensions
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Revision history STP16CP05
9 Revision history
Table 16. Revision history
Date Revision Changes
28-Jul-2006 1 First release
21-Dec-2006 2 Final datasheet
17-May-2007 3 Updated Table 7 on page 6
10-Jul-2007 4 Updated Table 9: Truth table on page 10
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Page 25
STP16CP05
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