ST STP16CPC05 User Manual
Low voltage 16-bit constant current LED sink driver
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
■ Can be driven by a 3.3 V microcontroller
■ Output current: 5-100 mA
■ Max clock frequency 30 MHz
■ ESD protection 2.5 kV HBM, 200 V MM
Description
STP16CPC05
with balanced output rise/fall time
QSOP-24
TSSOP24
SO-24
TSSOP24
(exposed pad)
The STP16CPC05 is a monolithic, low voltage,
low current power 16-bit shift register designed for
LED panel displays. The STP16CPC05 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 5 mA to 100 mA constant current to
drive the LEDs.
The STP16CPC05`s output stage is designed to
optimize the turn-on and turn-off time, typically
100 nS. The balanced turning ON/OFF improves
the system performances reducing the bypass
capacitance in applications where parasitic
inductance generate ringing or noise in the
system. The LEDs' brightness can be controlled
by using an external resistor to adjust the
STP16CPC05 output current.
Table 1. Device summary
Order codes Package Packaging
STP16CPC05MTR SO-24 1000 parts per reel
STP16CPC05TTR TSSOP24 2500 parts per reel
The STP16CPC05 guarantees a 20 V output
driving capability, allowing users to connect more
LEDs in series.The high clock frequency, 30 MHz,
makes the device suitable for high data rate
transmission. The 3.3 V voltage supply is useful in
applications that interface with a 3.3 V
microcontroller.
STP16CPC05XTTR TSSOP24 exposed pad 2500 parts per reel
STP16CPC05PTR QSOP-24 2500 parts per reel
October 2009 Doc ID 15352 Rev 3 1/27
www.st.com
27
Contents STP16CPC05
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2/27 Doc ID 15352 Rev 3
STP16CPC05 Summary description
1 Summary description
Table 2. Typical current accuracy
Output voltage
Current accuracy
Between bits Between ICs
≥ 1.3 V ±1.5% ±5% ≥ 20 to 100 mA 3.3 V to 5 V 25 °C
1.1 Pin connection and description
Figure 2. Pin connection
Output current
V
DD
Temper atur e
Note: Exposed-pad should be electrically connected to a metal land electrically isolated or
connected to ground
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 Input terminal of output enable (active low)
22 SDO Serial data out terminal
23 R-EXT Input terminal of an external resistor for constant current programing
24 V
DD
Supply voltage terminal
Doc ID 15352 Rev 3 3/27
Electrical ratings STP16CPC05
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.
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
SO-24 60 °C/W
TSSOP24 85 °C/W
(1)
TSSOP24
exposed pad
37.5 °C/W
QSOP-24 72 °C/W
4/27 Doc ID 15352 Rev 3
STP16CPC05 Electrical ratings
2.3 Recommended operating conditions
Table 6. Recommended operating conditions TA = 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
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
-VDD+0.3 V
CLK pulse width 16 - ns
OE pulse width 200 - ns
= 3.3 V to 5.0 V
V
Setup time for DATA 8 - ns
DD
Hold time for DATA 4 - ns
Setup time for LATCH 5 - ns
(1)
-30MHz
Clock frequency
Cascade operation
VDD = 5 V
DD
1. If the device is connected in cascade, it may not be possible achieve the maximum data transfer. Please
considered the timings carefully.
V
Doc ID 15352 Rev 3 5/27
Electrical characteristics STP16CPC05
3 Electrical characteristics
V
= 3.3 V to 5 V, TA = 25 °C, unless otherwise specified
DD
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 0.7V
IH
Input voltage low level GND 0.3V
IL
DD
Output leakage current VOH = 20 V 10 μA
Output voltage
OL
(Serial-OUT)
Output voltage
OH
(Serial-OUT)
Output current
Output current error
between bit
(All Output ON)
I
= 1 mA 0.4 V
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
V
= 0.3 V, R
O
VO = 0.3 V, R
VO = 1.3 V, R
= 4.2 kΩ 4.25 5 5.75
ext
= 1 kΩ 19 20 21
ext
= 200 Ω 96 100 104
ext
= 4.2 kΩ ± 5 ± 8
ext
= 1 kΩ ± 1.5 ± 3
ext
= 200 Ω ± 1.2 ± 3
ext
Pull-up resistor 150 300 600 kΩ
Pull-down resistor 100 200 400 kΩ
R
= 1 kΩ
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
= 1 kΩ
EXT
OUT 0 to 15 = ON
11.2
4.5
R
= 250 Ω
Supply current (ON)
R
= 250 Ω
I
DD(ON2)
EXT
OUT 0 to 15 = ON
11.7
Thermal Thermal protection 170 °C
V
V
mAI
%ΔI
mA
6/27 Doc ID 15352 Rev 3
STP16CPC05 Electrical characteristics
V
= 5 V, TA = 25 °C, unless otherwise specified
DD
Table 8. Switching characteristics
Symbol Parameter Test conditions Min Typ Max Unit
t
PLH1
t
PLH2
t
PLH3
t
PLH
t
PHL1
t
PHL2
t
PHL3
t
PHL
t
ON
t
OFF
t
r
t
f
1. In order to achieve high cascade data transfer, please consider tr/tf timings carefully.
Propagation delay time,
CLK-OUTn
, LE = H, OE = L
Propagation delay time,
LE-OUTn, OE = L
Propagation delay time,
OE-OUTn, LE = H
Propagation delay time,
CLK-SDO
Propagation delay time,
CLK-OUTn, LE = H,
= L
OE
Propagation delay time,
LE-OUTn
, OE = L
Propagation delay time,
OE-OUTn, LE = H
Propagation delay time,
CLK-SDO
Output rise time
10~90% of voltage
waveform
Output fall time
90~10% of voltage
waveform
CLK rise time
CLK fall time
(1)
(1)
V
= V
IH
DD
VIL = GND CL = 10 pF
= 20 mA VL = 3.0 V
I
O
R
= 1 kΩ RL = 60 Ω
EXT
V
= 3.3 V - 175 227
DD
= 5 V - 159 206
V
DD
= 3.3 V - 176 228
V
DD
= 5 V - 158 205
V
DD
= 3.3 V - 235 305
V
DD
= 5 V - 192 250
V
DD
= 3.3 V - 20 26
V
DD
= 5 V - 14 18
V
DD
V
= 3.3 V - 70 91
DD
= 5 V - 68 88
V
DD
VDD = 3.3 V - 56 73
= 5 V - 54 70
V
DD
= 3.3 V - 102 132
V
DD
= 5 V - 100 130
V
DD
= 3.3 V - 25 32
V
DD
= 5 V - 17 22
V
DD
VDD = 3.3 V - 116 150
= 5 V - 108 140
V
DD
VDD = 3.3 V - 80 104
= 5 V - 80 104
V
DD
- 5000 ns
- 5000 ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Doc ID 15352 Rev 3 7/27
Equivalent circuit and outputs STP16CPC05
4 Equivalent circuit and outputs
Figure 3. OE terminal
Figure 4. LE terminal
Figure 5. CLK, SDI terminal
8/27 Doc ID 15352 Rev 3
STP16CPC05 Equivalent circuit and outputs
Figure 6. SDO terminal
Figure 7. Block diagram
Doc ID 15352 Rev 3 9/27
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