ST STP16CPPS05 User Manual
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.
Table 1. Device summary
STP16CPPS05
Low voltage 16-bit constant current
Preliminary data
QSOP-24
TSSOP24
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
(exposed pad)
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
October 2009 Doc ID 16536 Rev 1 1/29
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
www.st.com
29
Contents STP16CPPS05
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
2/29 Doc ID 16536 Rev 1
STP16CPPS05 Summary description
1 Summary description
Table 2. Typical current accuracy
Current accuracy
Output voltage
Between bits Between ICs
≥ 1.3 V ± 1% ± 2% 5 to 40 mA 3.3 V to 5 V 25 °C
1.1 Pin connection and description
Figure 1. Pin connection
Output current
V
DD
Temper ature
Note: The exposed pad should be electrically connected to a metal land electrically isolated or
connected to ground.
Doc ID 16536 Rev 1 3/29
Summary description STP16CPPS05
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
24 V
DD
Input terminal for an external resistor for constant current
programming
Supply voltage terminal
4/29 Doc ID 16536 Rev 1
STP16CPPS05 Electrical ratings
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.
Table 4. Absolute maximum ratings
Symbol Parameter Value Unit
V
DD
V
I
O
V
I
GND
f
CLK
T
1. Such absolute value is based on the thermal shutdown protection.
Supply voltage 0 to 7 V
Output voltage -0.5 to 20 V
O
Output current 50 mA
Input voltage -0.4 to V
I
GND terminal current 800 mA
Clock frequency 50 MHz
Junction temperature range
J
2.2 Thermal data
Table 5. Thermal data
Symbol Parameter Value Unit
T
J-OPR
T
R
T
STG
thJA
Operating free-air temperature range -40 to +125 °C
A
Operating thermal junction temperature range -40 to +150 °C
Storage temperature range -55 to +150 °C
Thermal resistance junctionambient
(1)
(1)
DD
-40 to +170 °C
SO-24 42.7 °C/W
TSSOP24 55 °C/W
(2)
TSSOP24
Exposed Pad
37.5 °C/W
V
QSOP-24 55 °C/W
1. According with JEDEC standard 51-7B
2. The exposed pad should be soldered directly to the PCB to obtain the thermal benefits.
Doc ID 16536 Rev 1 5/29
Electrical ratings STP16CPPS05
2.3 Recommended operating conditions
Table 6. Recommended operating conditions
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
Supply voltage 3.0 5.5 V
DD
Output voltage 20 V
O
Output current OUTn 3 40 mA
I
O
Output current SERIAL-OUT +1 mA
OH
Output current SERIAL-OUT -1 mA
OL
Input voltage 0.7 V
IH
Input voltage -0.3 0.3 V
IL
LE pulse width
DD
20 ns
CLK pulse width 10 ns
OE pulse width 100 ns
VDD = 3.0 V to 5.0 V
Setup time for DATA 8 ns
Hold time for DATA 5 ns
Setup time for LATCH 8 ns
Clock frequency Cascade operation
(1)
V
DD
30 MHz
1. If the device is connected in cascade, it may not be possible achieve the maximum data transfer.
Please consider the timings carefully.
DD
V
V
6/29 Doc ID 16536 Rev 1
STP16CPPS05 Electrical characteristics
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
V
V
I
OH
V
V
I
OL1
OL2
I
OL3
ΔI
OL1
OL2
ΔI
OL3
R
SIN(up)
R
SIN(down)
I
DD(OFF1)
Input voltage high level 0.7 V
IH
Input voltage low level GND 0.3 V
IL
DD
Output leakage current VOH = 20 V 1 μA
Output voltage
OL
(serial-OUT)
Output voltage
OH
(serial-OUT)
Output current
Output current error
between bit
(All output ON)
= 1 mA 0.4 V
I
OL
= -1 mA VDD-0.4V V
I
OH
= 0.3 V, R
V
O
VO = 0.3 V, R
VO = 1.3 V, R
VO = 0.3 V, IO = 5 mA
= 4 kΩ
R
EXT
VO = 0.3 V, IO = 20 mA
R
= 980 Ω
EXT
VO = 1.3 V, IO = 40 mA
R
= 490 Ω
EXT
= 4 kΩ 4.75 5 5.25
ext
= 1 kΩ 19 20 21
ext
= 497 Ω 38 40 42
ext
± 1 ± 5
± 0.5 ± 3
± 0.5 ± 3
Pull-up resistor 150 300 600 kΩ
Pull-down resistor 100 200 400 kΩ
R
= 1 kΩ,
EXT
I
= 20 mA,
OUT
5.4 7.5
V
DD
DD
V
V
mAI
%ΔI
OUT 0 to 15 = OFF
Supply current (OFF)
R
= 497 Ω,
I
DD(OFF2)
EXT
= 40 mA OUT 0 to
I
OUT
8.0 9.5
15 = OFF
mA
R
= 1 kΩ,
I
DD(ON1)
I
OUT
EXT
= 20 mA,
5.5 7.5
OUT 0 to 15 = ON
Supply current (ON)
R
= 497 Ω,
I
DD(ON2)
EXT
I
= 40 mA OUT 0 to
OUT
8.1 9.5
15 = ON
I
DD(SH)
Thermal Thermal protection 170 °C
Shut-down current all
latched data = L
VDD = 3.3V 160 200 µA
VDD = 5V 190 240 µA
Doc ID 16536 Rev 1 7/29
Electrical characteristics STP16CPPS05
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
t
PLH1
Propagation delay time,
CLK-OUTn
, LE = H, OE = L
Propagation delay time,
t
PLH2
t
PLH3
t
LE-OUTn,
= L
OE
Propagation delay time,
OE-OUTn, LE = H
Propagation delay time,
PLH
CLK-SDO
Propagation delay time,
t
PHL1
t
PHL2
CLK-OUTn
OE = L
Propagation delay time,
LE-OUTn,
OE = L
, LE = H,
= V
V
IH
DD
VIL = GND CL = 10 pF
= 20 mA VL = 3.0 V
I
O
R
= 1 KΩ RL = 60 Ω
EXT
Propagation delay time,
t
PHL3
OE-OUTn,
LE = H
t
Propagation delay time,
PHL
CLK-SDO
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)
VDD = 3.3 V 53.5 86.5
= 5 V 32 46.5
V
DD
V
= 3.3 V 48 75.5
DD
= 5 V 30 43
V
DD
= 3.3 V 71.5 118
V
DD
= 5 V 43 62
V
DD
= 3.3 V 15 21 31
V
DD
= 5 V 11 15 21
V
DD
V
= 3.3 V 27.5 39
DD
= 5 V 22 30.5
V
DD
VDD = 3.3 V 11.5 17.5
= 5 V 8 11.5
V
DD
VDD = 3.3 V 24 33.5
= 5 V 21 28.5
V
DD
= 3.3 V 17.5 24 36
V
DD
= 5 V 12.5 17 25
V
DD
VDD = 3.3 V 29 54
= 5 V 10 17
V
DD
VDD = 3.3 V 4.5 6
= 5 V 3.5 5
V
DD
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5000 ns
5000 ns
8/29 Doc ID 16536 Rev 1
STP16CPPS05 Equivalent circuit and outputs
4 Equivalent circuit and outputs
Figure 2. OE terminal
Figure 3. LE terminal
Figure 4. CLK, SDI terminal
Doc ID 16536 Rev 1 9/29
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