Preliminary data
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
October 2009 Doc ID 16536 Rev 1 1/29
29
STP16CPPS05
Low voltage 16-bit constant current
LED sink driver with auto power-saving
Features
■Low voltage power supply down to 3 V
■16 constant current output channels
■Adjustable output current through external
resistor
■Serial data IN/parallel data OUT
■Auto power-saving
■3.3 V MCU-driving capability
■Output current: 3 to 40 mA
■30 MHz clock frequency
■Available in high thermal efficiency TSSOP
exposed pad
■ESD protection: 2 kV HBM, 200 V MM
Description
The STP16CPPS05 is a monolithic, low voltage,
low current power 16-bit shift register designed for
LED panel displays. The device features 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 are designed to
provide 3 to 40 mA of constant current to drive the
LEDs.
The STP16CPPS05 output current can be
adjusted through an external resistor to control
the light intensity of the LEDs.
LED brightness is adjustable from 0% to 100% via
the OE pin.
The auto power-shutdown and auto power-ON
feature allows the device to save power with no
external intervention.
The STP16CPPS05 guarantees a 20 V output
driving capability, allowing users to connect more
LEDs in series. The high 30 MHz clock frequency
makes the device suitable for high data rate
transmission. The 3.3 V supply is well suited for
applications which interface a 3.3 V MCU.
Compared to a standard TSSOP package, the
TSSOP with exposed pad increases heat
dissipation capability by a factor of 2.5
SO-24
TSSOP24 TSSOP24
(exposed pad)
QSOP-24
Table 1. Device summary
Order codes Package Packaging
STP16CPPS05MTR SO-24 1000 parts per reel
STP16CPPS05TTR TSSOP24 2500 parts per reel
STP16CPPS05XTTR TSSOP24 exposed pad 2500 parts per reel
STP16CPPS05PTR QSOP-24 2500 parts per reel
www.st.com
Contents STP16CPPS05
2/29 Doc ID 16536 Rev 1
Contents
1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Pin connection and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Equivalent circuit and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1 Auto power-saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
STP16CPPS05 Summary description
Doc ID 16536 Rev 1 3/29
1 Summary description
1.1 Pin connection and description
Figure 1. Pin connection
Note: The exposed pad should be electrically connected to a metal land electrically isolated or
connected to ground.
Table 2. Typical current accuracy
Output voltage
Current accuracy
Output current VDD Temperature
Between bits Between ICs
≥ 1.3 V ± 1% ± 2% 5 to 40 mA 3.3 V to 5 V 25 °C
Summary description STP16CPPS05
4/29 Doc ID 16536 Rev 1
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 - detect mode 1 (see operation principle)
5-20 OUT 0-15 Output terminal
21 OE Input terminal of output enable (active low) - detect mode 1
(see operation principle)
22 SDO Serial data out terminal
23 R-EXT Input terminal for an external resistor for constant current
programming
24 VDD Supply voltage terminal
STP16CPPS05 Electrical ratings
Doc ID 16536 Rev 1 5/29
2 Electrical ratings
2.1 Absolute maximum ratings
Stressing the device above the ratings 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 condition 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.
2.2 Thermal data
Table 4. Absolute maximum ratings
Symbol Parameter Value Unit
VDD Supply voltage 0 to 7 V
VOOutput voltage -0.5 to 20 V
IOOutput current 50 mA
VIInput voltage -0.4 to VDD V
IGND GND terminal current 800 mA
fCLK Clock frequency 50 MHz
TJJunction temperature range (1)
1. Such absolute value is based on the thermal shutdown protection.
-40 to +170 °C
Table 5. Thermal data
Symbol Parameter Value Unit
TAOperating free-air temperature range -40 to +125 °C
TJ-OPR Operating thermal junction temperature range -40 to +150 °C
TSTG Storage temperature range -55 to +150 °C
RthJA
Thermal resistance junction-
ambient (1)
1. According with JEDEC standard 51-7B
SO-24 42.7 °C/W
TSSOP24 55 °C/W
TSSOP24(2)
Exposed Pad
2. The exposed pad should be soldered directly to the PCB to obtain the thermal benefits.
37.5 °C/W
QSOP-24 55 °C/W
Electrical ratings STP16CPPS05
6/29 Doc ID 16536 Rev 1
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 V
VOOutput voltage 20 V
IOOutput current OUTn 3 40 mA
IOH Output current SERIAL-OUT +1 mA
IOL Output current SERIAL-OUT -1 mA
VIH Input voltage 0.7 VDD VDD V
VIL Input voltage -0.3 0.3 VDD V
twLAT LE pulse width
VDD = 3.0 V to 5.0 V
20 ns
twCLK CLK pulse width 10 ns
twEN OE pulse width 100 ns
tSETUP(D) Setup time for DATA 8 ns
tHOLD(D) Hold time for DATA 5 ns
tSETUP(L) Setup time for LATCH 8 ns
fCLK Clock frequency Cascade operation (1)
1. If the device is connected in cascade, it may not be possible achieve the maximum data transfer.
Please consider the timings carefully.
30 MHz
STP16CPPS05 Electrical characteristics
Doc ID 16536 Rev 1 7/29
3 Electrical characteristics
VDD = 3.3 V to 5 V, TA = 25 °C, unless otherwise specified.
Table 7. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
VIH Input voltage high level 0.7 VDD VDD V
VIL Input voltage low level GND 0.3 VDD V
IOH Output leakage current VOH = 20 V 1 μA
VOL
Output voltage
(serial-OUT) IOL = 1 mA 0.4 V
VOH
Output voltage
(serial-OUT) IOH = -1 mA VDD-0.4V V
IOL1
Output current
VO = 0.3 V, Rext = 4 kΩ4.75 5 5.25
mAIOL2 VO = 0.3 V, Rext = 1 kΩ19 20 21
IOL3 VO = 1.3 V, Rext = 497 Ω38 40 42
ΔIOL1
Output current error
between bit
(All output ON)
VO = 0.3 V, IO = 5 mA
REXT = 4 kΩ± 1 ± 5
%ΔIOL2
VO = 0.3 V, IO = 20 mA
REXT = 980 Ω± 0.5 ± 3
ΔIOL3
VO = 1.3 V, IO = 40 mA
REXT = 490 Ω± 0.5 ± 3
RSIN(up) Pull-up resistor 150 300 600 kΩ
RSIN(down) Pull-down resistor 100 200 400 kΩ
IDD(OFF1)
Supply current (OFF)
REXT = 1 kΩ,
IOUT = 20 mA,
OUT 0 to 15 = OFF
5.4 7.5
mA
IDD(OFF2)
REXT = 497 Ω,
IOUT = 40 mA OUT 0 to
15 = OFF
8.0 9.5
IDD(ON1)
Supply current (ON)
REXT = 1 kΩ,
IOUT = 20 mA,
OUT 0 to 15 = ON
5.5 7.5
IDD(ON2)
REXT = 497 Ω,
IOUT = 40 mA OUT 0 to
15 = ON
8.1 9.5
IDD(SH)
Shut-down current all
latched data = L
VDD = 3.3V 160 200 µA
VDD = 5V 190 240 µA
Thermal Thermal protection 170 °C
Electrical characteristics STP16CPPS05
8/29 Doc ID 16536 Rev 1
VDD = 3.3 V to 5 V, TA = 25 °C, unless otherwise specified.
Table 8. Switching characteristics
Symbol Parameter Test conditions Min Typ Max Unit
tPLH1
Propagation delay time,
CLK-OUTn, LE = H, OE = L
VIH = VDD
VIL = GND CL = 10 pF
IO = 20 mA VL = 3.0 V
REXT = 1 KΩRL = 60 Ω
VDD = 3.3 V 53.5 86.5 ns
VDD = 5 V 32 46.5
tPLH2
Propagation delay time,
LE-OUTn,
OE = L
VDD = 3.3 V 48 75.5
ns
VDD = 5 V 30 43
tPLH3
Propagation delay time,
OE-OUTn, LE = H
VDD = 3.3 V 71.5 118 ns
VDD = 5 V 43 62
tPLH
Propagation delay time,
CLK-SDO
VDD = 3.3 V 15 21 31 ns
VDD = 5 V 11 15 21
tPHL1
Propagation delay time,
CLK-OUTn, LE = H,
OE = L
VDD = 3.3 V 27.5 39
ns
VDD = 5 V 22 30.5
tPHL2
Propagation delay time,
LE-OUTn,
OE = L
VDD = 3.3 V 11.5 17.5
ns
VDD = 5 V 8 11.5
tPHL3
Propagation delay time,
OE-OUTn,
LE = H
VDD = 3.3 V 24 33.5
ns
VDD = 5 V 21 28.5
tPHL
Propagation delay time,
CLK-SDO
VDD = 3.3 V 17.5 24 36 ns
VDD = 5 V 12.5 17 25
tON
Output rise time
10~90% of voltage
waveform
VDD = 3.3 V 29 54
ns
VDD = 5 V 10 17
tOFF
Output fall time
90~10% of voltage
waveform
VDD = 3.3 V 4.5 6
ns
VDD = 5 V 3.5 5
trCLK rise time (1) 5000 ns
tfCLK fall time (1) 5000 ns
1. In order to achieve high cascade data transfer, please consider tr/tf timings carefully.
STP16CPPS05 Equivalent circuit and outputs
Doc ID 16536 Rev 1 9/29
4 Equivalent circuit and outputs
Figure 2. OE terminal
Figure 3. LE terminal
Figure 4. CLK, SDI terminal
Equivalent circuit and outputs STP16CPPS05
10/29 Doc ID 16536 Rev 1
Figure 5. SDO terminal
Figure 6. Block diagram
&
STP16CPPS05 Timing diagrams
Doc ID 16536 Rev 1 11/29
5 Timing diagrams
Note: OUTn = ON when Dn = H OUTn = OFF when Dn = L
Figure 7. Timing diagram
Note: 1 Latch and output enable terminals are level-sensitive and are not synchronized with rising or
falling edge of CLK signal.
2 When LE terminal is low level, the latch circuit holds previous set of data.
3 When LE terminal is high level, the latch circuit refreshes new set of data from SDI chain.
4 When OE terminal is at low level, the output terminals Out 0 to Out 15 respond to data in the
latch circuits, either ‘1’ for ON or ‘0’ for OFF.
5 When OE terminal is at high level, all output terminals are switched OFF.
Table 9. Truth table
CLOCK LE OE SERIAL-IN OUT0 ............. OUT7 ................ OUT15 SDO
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
Timing diagrams STP16CPPS05
12/29 Doc ID 16536 Rev 1
Figure 8. Clock, serial-in, serial-out
Table 10. Enable IO: shutdown truth table
CLOCK LE SDI0 ........... SDI7 ............ SDI15 SH Auto
Power-up OUTn
H All = L Active Not active (1)
1. At power-up, the device starts in shutdown mode.
OFF
L No change No change No change No change
H One or more = H Not active Active X (2)
2. Undefined.
STP16CPPS05 Timing diagrams
Doc ID 16536 Rev 1 13/29
Figure 9. Clock, serial-in, latch, enable, outputs
Figure 10. Outputs
LE
OE
OUTn
OUTn
Typical characteristics STP16CPPS05
14/29 Doc ID 16536 Rev 1
6 Typical characteristics
Figure 11. Output current vs. R-EXT resistor
Table 11. Output current vs. R-EXT resistor
R-EXT (Ω) Output current (mA)
23700 1
11730 2
6930 3
4090 5
2025 10
1000 20
667 30
497 40
331 60
0
5000
10000
15000
20000
25000
0 10203040506070
Current (mA)
R external (Ohm)
STP16CPPS05 Typical characteristics
Doc ID 16536 Rev 1 15/29
Conditions:
Temperature = 25 °C, VDD = 3.3 V; 5.0 V, ISET = 3 mA; 5 mA; 10 mA; 20 mA; 50 mA; 60 mA.
Figure 12. ISET vs. dropout voltage (Vdrop)
Table 12. ISET vs. dropout voltage (Vdrop)
Iout (mA) Avg (mV) @ 3.3 V Avg (mV)@ 5.0 V
33637
57172
10 163 163
20 346 347
40 724 726
60 1080 1110
0
200
400
600
800
1000
1200
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Current (mA)
Min Drop Voltage (mV
)
Avg @ 3.3V
Avg @ 5.0V
Typical characteristics STP16CPPS05
16/29 Doc ID 16536 Rev 1
TA = 25 °C, Vdd = 3.3 V; 5 V
Figure 13. Output current vs. ± ΔIOL(%)
Figure 14. Idd ON/OFF
0
1
2
3
4
5
6
7
8
9
10
11
12
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Iset (mA)
Idd (mA)
AVG IDD ON @ 5.0V
AVG IDD ON @ 3.3V
AVG IDD OFF @ 5.0V
AVG IDD OFF @ 3.3V
STP16CPPS05 Typical characteristics
Doc ID 16536 Rev 1 17/29
Figure 15. Power dissipation vs. package temperature
Note: The exposed pad should be soldered to the PCB to obtain the thermal benefits.
Figure 16. Turn ON output current
characteristics (1) Figure 17. Turn OFF output current
characteristics (2)
Electrical conditions:
Vdd = 3.3 V, Vin = Vdd, Vled = 3.0 V, RL = 60 Ω, CL = 10 pF
Ch1 (Yellow) = OE, Ch2 (Blue) = CLK, Ch3 (Purple) = VOUT, Ch4 (Green) = OUT
1. The reference level for the TON characteristics is 50% of OE signal and 90% of output current
2. The reference level for the TOFF characteristics is 50% of OE signal and 10% of output current
Typical characteristics STP16CPPS05
18/29 Doc ID 16536 Rev 1
6.1 Auto power-saving
The auto power-saving feature minimizes the quiescent current if no active data is detected
on the latches and auto powers-up the device as the first active data is latched.
Figure 18. Auto power-saving feature
Electrical conditions: Temp. = 25 °C, Vdd = 3.3 V, Vin = Vdd, Vled = 3.0 V, RL = 60 Ω, CL = 10 pF
Ch1 (Yellow) = OE, Ch2 (Blue) = CLK, Ch3 (Purple) = LE, Ch4 (Green) = idd
Idd consumption:
Idd (normal operation) = 4.2 mA
Idd (shut down condition) = 190 µA
STP16CPPS05 Typical characteristics
Doc ID 16536 Rev 1 19/29
Figure 19. First output ON after switching from auto power saving to normal
operating condition
Note: When the device goes from AUTO power saving to normal operative condition, the first
output that switch ON shows TON condition as seen in the plot above.
Electrical conditions: temp. = 25 °C, Vdd = 3.3 V, Vin = Vdd, Vled = 3.0 V, Iset = 20 mA
Ch1 (Yellow) = SDI, Ch2 (Blue) = CLK, Ch3 (Purple) = LE, Ch4 (Green) = first output ON
Package mechanical data STP16CPPS05
20/29 Doc ID 16536 Rev 1
7 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Table 13. QSOP-24 mechanical data
Dim.
mm. inch
Min Typ Max Min Typ Max
A 1.54 1.62 1.73 0.061 0.064 0.068
A1 0.1 0.15 0.25 0.004 0.006 0.010
A2 1.47 0.058
b 0.31 0.2 0.012 0.008
c 0.254 0.17 0.010 0.007
D 8.56 8.66 8.76 0.337 0.341 0.345
E 5.8 6 6.2 0.228 0.236 0.244
E1 3.8 3.91 4.01 0.150 0.154 0.158
e 0.635 0.025
L 0.4 0.635 0.89 0.016 0.025 0.035
h 0.25 0.33 0.41 0.010 0.013 0.016
< 8° 0°
STP16CPPS05 Package mechanical data
Doc ID 16536 Rev 1 21/29
Figure 20. QSOP-24 package dimensions
Package mechanical data STP16CPPS05
22/29 Doc ID 16536 Rev 1
Figure 21. QSOP-24 tape and reel dimensions
Table 14. QSOP-24 tape and reel
Dim.
mm. Inches
Min Typ Max Min Typ Max
R1 12.8 13 13.5 5.039 5.118 5.315
R2 330 129.921
R3 100 39.37
eint 16.4 6.457
e1 1.5 2 2.5 0.591 0.787 0.984
0.3+/-0.05
10.3+/-0.1
2.1 +/-0.1
2.0+/-0.1
4.0+/-0.1
1.75+/-0.1
16 +/-0.3
7.5+/-0.1
1.6 +1/-0.1
8 +/-0.1
6.5+/-0.1
1.5+1/0
0.3+/-0.05
10.3+/-0.1
2.1 +/-0.1
2.0+/-0.1
4.0+/-0.1
1.75+/-0.1
16 +/-0.3
7.5+/-0.1
1.6 +1/-0.1
8 +/-0.1
6.5+/-0.1
1.5+1/0
7217811_C
STP16CPPS05 Package mechanical data
Doc ID 16536 Rev 1 23/29
Table 15. TSSOP24 mechanical data
Dim.
mm. Inches
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 22. TSSOP24 package dimensions
Package mechanical data STP16CPPS05
24/29 Doc ID 16536 Rev 1
Table 16. TSSOP24 exposed pad mechanical data
Dim.
mm Inches
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 4.7 5.0 5.3 0.185 0.197 0.209
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 2.9 3.2 3.5 0.114 0.126 0.138
e 0.65 0.0256
K 0° 8° 0° 8°
L 0.45 0.60 0.75 0.018 0.024 0.030
Figure 23. TSSOP24 exposed pad dimensions
STP16CPPS05 Package mechanical data
Doc ID 16536 Rev 1 25/29
Table 17. Tape and reel TSSOP24 and TSSOP24 exposed pad
Dim.
mm. Inches
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 24. TSSOP24 and TSSOP24 exposed pad tape and reel dimensions
Package mechanical data STP16CPPS05
26/29 Doc ID 16536 Rev 1
Table 18. SO-24 mechanical data
Dim.
mm. Inches
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 25. SO-24 package dimensions
STP16CPPS05 Package mechanical data
Doc ID 16536 Rev 1 27/29
Table 19. Tape and reel SO-24
Dim.
mm. Inches
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 26. SO-24 tape and reel dimensions
Revision history STP16CPPS05
28/29 Doc ID 16536 Rev 1
8 Revision history
Table 20. Document revision history
Date Revision Changes
23-Oct-2009 1 Initial release.
STP16CPPS05
Doc ID 16536 Rev 1 29/29
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