STMicroelectronics STP16CPS05 Technical data
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
■ Auto power-saving feature minimizes the
quiescent current if no active data is detected
on the latches
■ Can be driven by a 3.3V microcontroller
■ Output current: 5-100mA
■ Max clock frequency 30MHz
■ ESD protection 2.5kV HBM, 200V MM
STP16CPS05
with auto power saving
SO-24
TSSOP24
TSSOP24
(exposed pad)
Description
The STP16CPS05 is a monolithic, low voltage,
low current power 16-bit shift register designed for
LED panel displays. The STP16CPS05 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 Auto Power Shut-Down and Auto Power-ON
feature allows the device to save power without
any external intervention.
Table 1. Device summary
Order codes Package Packaging
STP16CPS05MTR SO-24 1000 parts per reel
STP16CPS05TTR TSSOP24 2500 parts per reel
STP16CPS05XTTR TSSOP24 Exposed Pad 2500 parts per reel
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 STP16CPS05
output current.
The STP16CPS05 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
microcontroller.
July 2007 Rev 4 1/25
www.st.com
25
Contents STP16CPS05
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2/25
STP16CPS05 Summary description
1 Summary description
Table 2. Typical current accuracy
Output voltage
Current accuracy
Output current
Between bits Between ICs
V
DD
temp.
≥ 1.3V ±1.5% ±5%
1.1 Pin connection and description
Figure 1. Pin connection
≥20 to 100 mA
3.3V to 5V 25°C
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
3/25
Electrical ratings STP16CPS05
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
4/25
STP16CPS05 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
5/25
Electrical characteristics STP16CPS05
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
V
I
OH
V
V
I
OL1
OL2
I
OL3
∆I
OL1
OL2
∆I
OL3
R
SIN(up)
R
SIN(down)
I
DD(SH)
I
DD(OFF1)
Input voltage high level 0.7V
IH
Input voltage low level GND 0.3V
IL
DD
Output leakage current VOH = 20V 10 µA
Output voltage
OL
(Serial-OUT)
Output voltage
OH
(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
Pull-up resistor 150 300 600 KΩ
Pull-down resistor 100 200 400 KΩ
= 3.3V 70 120 µA
V
Shut-down current
All Latched Data = L
DD
= 5V 100 150 µA
V
DD
R
= 970
EXT
OUT 0 to 15 = OFF
4
V
DD
DD
Supply current (OFF)
I
DD(OFF2)
I
DD(ON1)
EXT
OUT 0 to 15 = OFF
R
= 970
EXT
OUT 0 to 15 = ON
11.2
4.5
R
= 240
Supply current (ON)
R
= 240
I
DD(ON2)
EXT
OUT 0 to 15 = ON
11.7
Thermal Thermal protection 170 °C
V
V
mAI
%∆I
mA
6/25
STP16CPS05 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 50 70
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,
-OUTn, OE = L
LE
Propagation delay time,
OE-OUTn, LE = H
Propagation delay time,
PHL
CLK-SDO
V
= 3.3 V VIH = V
DD
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 28 40
V
DD
= 3.3V 48 70
V
DD
= 5V 25 40
V
DD
= 3.3V 55 75
V
DD
= 5V 35 45
V
DD
= 3.3V 11 16
V
DD
= 5V 8 12
V
DD
V
= 3.3V 22 30
DD
= 5V 17 25
V
DD
VDD = 3.3V 7 10
= 5V 4 6
V
DD
= 3.3V 18 30
V
DD
= 5V 15 25
V
DD
= 3.3V 12 18
V
DD
= 5V 8 12
V
DD
VDD = 3.3V 40 80
= 5V 22 35
V
DD
VDD = 3.3V 11 15
= 5V 18 25
V
DD
5000 ns
5000 ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
7/25
Equivalent circuit and outputs STP16CPS05
4 Equivalent circuit and outputs
Figure 2. OE terminal
Figure 3. LE terminal
Figure 4. CLK, SDI terminal
8/25
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