STMICROELECTRONICS STP16CPS05

STP16CPS05
Low voltage 16-Bit constant current LED sink driver
with auto power saving
Preliminary Data
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: 5-80mA
■
30MHz clock frequency
DIP-24
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 80mA 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.
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
microntroller.
Order codes
July 2006
Part number
Package
Packaging
STP16CPS05B1R
DIP-24
15 parts per tube
STP16CPS05MTR
SO-24
1000 parts per reel
STP16CPS05TTR
TSSOP24
2500 parts per reel
STP16CPS05XTR
TSSOP24 Exposed Pad
2500 parts per reel
Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
1/26
www.st.com
26
Contents
STP16CPS05
Contents
1
Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
2
Pin connection and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
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
2/26
STP16CPS05
1
Summary description
Summary description
Table 1.
Current accuracy
Current accuracy
Output voltage
1.1
Between ICs
≥ 1.0V
± 3%
± 8%
15 to 80 mA
≥ 0.2V
± 6%
± 8%
5 to 15 mA
temp.
3.3V to 5V
25°C
Pin connection and description
Figure 1.
Note:
VDD
Output current
Between bits
Pin connection
The exposed pad is electrically not connected
Table 2.
Pin description
PIN N°
Symbol
1
GND
Ground Terminal
2
SDI
Serial data input terminal
3
CLK
Clock input terminal
Latch input terminal
4
LE
5-20
OUT 0-15
21
OE
22
SDO
23
R-EXT
24
VDD
Name and function
Output terminal
Input terminal of output enable (active low)
Serial data out terminal
Input terminal of an external resistor for constant current programing
Supply voltage terminal
3/26
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 3.
Absolute maximum ratings
Symbol
2.2
Parameter
Value
Unit
VDD
Supply voltage
0 to 7
V
VO
Output voltage
-0.5 to 20
V
IO
Output current
80
mA
VI
Input voltage
-0.4 to VDD+0.4
V
1300
mA
30
MHz
Value
Unit
IGND
GND terminal current
fCLK
Clock frequency
Thermal data
Table 4.
Symbol
Thermal data
Parameter
TOPR
Operating temperature range
-40 to +125
°C
TSTG
Storage temperature range
-55 to +150
°C
60
°C/W
85
°C/W
TSSOP24
Exposed Pad
37.5
°C/W
SO-24
75
°C/W
DIP-24
TSSOP24
RthJC
Thermal resistance junction-case
(1)
1. The exposed pad should be soldered directly to the PCB to realize the thermal benefits.
4/26
STP16CPS05
2.3
Electrical ratings
Recommended operating conditions
Table 5.
Symbol
Recommended operating conditions at 25°C
Parameter
Test conditions
Min
3.0
Typ
Max
Unit
5.5
V
20
V
80
mA
VDD
Supply voltage
VO
Output voltage
IO
Output current
OUTn
IOH
Output current
SERIAL-OUT
+1
mA
IOL
Output current
SERIAL-OUT
-1
mA
VIH
Input voltage
0.7VDD
VDD+0.3
V
VIL
Input voltage
-0.3
0.3VDD
V
3
twLAT
LE pulse width
20
ns
twCLK
CLK pulse width
16
ns
twEN
/OE pulse width
200
ns
20
ns
15
ns
15
ns
tSETUP(D) Setup time for DATA
VDD = 3.3V to 5.0V
tHOLD(D) Hold time for DATA
tSETUP(L) Setup time for LATCH
fCLK
Clock frequency
Cascade operation
(1)
30
MHz
1. If the device is connected in cascade, it may not be possible achieve the maximum data transfer. Please
considered the timings carefully.
5/26
Electrical characteristics
3
STP16CPS05
Electrical characteristics
Table 6.
Electrical characteristics
(VDD=3.3V to 5V, T = 25°C, unless otherwise specified.)
Symbol
Parameter
VIH
Input voltage high level
VIL
Input voltage low level
IOH
Output leakage current
VOL
VOH
IOL1
Max
Unit
0.7VDD
VDD
V
GND
0.3VDD
V
VOH = 20V
10
µA
Output voltage
(Serial-OUT)
IOL = 1mA
0.4
V
Output voltage
(Serial-OUT)
IOH = -1mA
Output current
IOL2
∆IOL1
∆IOL2
RSIN(up)
Output current error
between bit
(All Output ON)
Test conditions
VDD-0.4V
V
20
mA
VO = 1.2VREXT = 241Ω
80
mA
VO = 0.3VREXT = 976Ω
±2
±3
%
VO = 1.2VREXT = 241Ω
±2
±3
%
150
300
600
KΩ
100
200
400
KΩ
VDD = 3.3V
70
120
µA
VDD = 5V
100
150
µA
Pull-up resistor
Shut-down current
All Latched Data = L
Typ
VO = 0.3VREXT = 976Ω
RSIN(down) Pull-down resistor
IDD(SH)
Min
REXT = 970
OUT 0 to 15 = OFF
4
IDD(OFF2)
REXT = 240
OUT 0 to 15 = OFF
11.2
IDD(ON1)
REXT = 970
OUT 0 to 15 = ON
4.5
REXT = 240
OUT 0 to 15 = ON
11.7
IDD(OFF1)
Supply current (OFF)
mA
Supply current (ON)
IDD(ON2)
Thermal
6/26
Thermal protection
170
°C
STP16CPS05
Table 7.
Electrical characteristics
Switching characteristics (VDD = 5V, T = 25°C, unless otherwise specified.)
Symbol
Parameter
tPLH1
Propagation Delay Time,
CLK-OUTn, LE = H, /OE = L
tPLH2
Propagation Delay Time,
LE-OUTn, /OE = L
tPLH3
Typ
Max
VDD = 3.3V
50
70
VDD = 5V
28
40
VDD = 3.3V
48
70
VDD = 5V
25
40
Propagation Delay Time,
/OE-OUTn, LE = H
VDD = 3.3V
55
75
VDD = 5V
35
45
Propagation Delay Time,
CLK-SDO
VDD = 3.3V
11
16
tPLH
VDD = 5V
8
12
Propagation Delay Time,
CLK-OUTn, LE = H,
/OE = L
VDD = 3.3V
22
30
tPHL1
VDD = 5V
17
25
Propagation Delay Time,
LE-OUTn, /OE = L
VDD = 3.3V
7
10
tPHL2
VDD = 5V
4
6
Propagation Delay Time,
/OE-OUTn, LE = H
VDD = 3.3V
18
30
tPHL3
VDD = 5V
15
25
Propagation Delay Time,
CLK-SDO
VDD = 3.3V
12
18
tPHL
VDD = 5V
8
12
Output Rise Time
10~90% of voltage
waveform
VDD = 3.3V
40
80
tON
VDD = 5V
22
35
Output Fall Time
90~10% of voltage
waveform
VDD = 3.3V
11
15
tOFF
VDD = 5V
18
25
tr
CLK Rise Time (1)
tf
CLK Fall Time
Test conditions
VDD = 3.3 V
VIL = GND
IO = 20mA
REXT = 1KΩ
VIH = VDD
CL = 10pF
VL = 3.0 V
RL = 60 Ω
Min
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(1)
5000
ns
5000
ns
1. In order to achieve high cascade data transfer,please consider tr/tf timings carefully.
7/26
Equivalent circuit and outputs
4
8/26
Equivalent circuit and outputs
Figure 2.
OE Terminal
Figure 3.
LE Terminal
Figure 4.
CLK, SDI Terminal
STP16CPS05
STP16CPS05
Equivalent circuit and outputs
Figure 5.
SDO Terminal
Figure 6.
Block diagram
9/26
Timing diagrams
5
Timing diagrams
Table 8.
CLOCK
Note:
Truth Table
SERIALOUT0 ............. OUT7 ................ OUT15
IN
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
L
Dn + 3
ON
Dn - 13
SDO
OUT0 to OUT15 = ON when Dn = H; OUT0 to OUT15 = OFF when Dn = L.
Figure 7.
Note:
10/26
STP16CPS05
Timing diagram
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 terminal is at High level, it switches off all the data on the output terminal.
STP16CPS05
Timing diagrams
Table 9.
CLOCK
Note:
Enable IO: shut-down truth table
LE
SDI0 ........... SDI7 ............ SDI15
SH
Auto
Power-up
OUTn
H
All = L
Active
Not Active
OFF
L
No Change
No Change
No Change
No Change
H
One or more = H
Not Active
Active
X
At the Power-up the device starts in Shut-Down mode.
Figure 8.
Clock, serial-in, serial-out
11/26
Timing diagrams
Figure 9.
STP16CPS05
Clock, serial-in, latch, enable, outputs
Figure 10. Outputs
12/26
STP16CPS05
6
Typical characteristics
Typical characteristics
Figure 11. Output current-REXT resistor
Table 10.
Output current-REXT resistor
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
13/26
Typical characteristics
Figure 12. Output current vs ± ∆IOL(%)
Figure 13. ISET vs drop out voltage (Vdrop)
14/26
STP16CPS05
STP16CPS05
Typical characteristics
Figure 14. IDD ON\OFF
Figure 15. Auto power saving
CH1 = Clock
CH2 = SDI
CH3 = Latch
CH4 = Supply
Current
Note:
Auto power-saving feature minimizes the quiescent current if no active data is detected on
the latches and auto-power-up the device at fist active data latched.
15/26
Test circuit
7
STP16CPS05
Test circuit
Figure 16. DC characteristic
Figure 17. AC characteristic
16/26
STP16CPS05
Test circuit
Figure 18. Typical application schematic
Note:
VL will be determined by the VF of the LEDs
Test condition: Temp. = 25°C, VDD = 3.0V, VIN = VDD, CL = 10pF, Freq. = 1MHz,
Ch1 = CLK, Ch2 = SDI, Ch3 = OUTn , Ch4 = VOUT
Figure 19. Turn ON output current setup
Figure 20. Turn OFF output current setup
17/26
Package mechanical data
8
STP16CPS05
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
18/26
STP16CPS05
Package mechanical data
Table 11.
Plastic DIP-24 (0.25) mechanical data
mm.
inch
Dim.
Min.
Typ
A
A1
Max.
Min.
Typ.
4.32
0.38
A2
Max.
0.170
0.015
3.3
0.130
B
0.41
0.46
0.51
0.016
0.018
0.020
B1
1.40
1.52
1.65
0.055
0.060
0.065
c
0.20
0.25
0.30
0.008
0.010
0.012
D
31.62
31.75
31.88
1.245
1.250
1.255
E
7.62
8.26
0.300
E1
6.35
6.86
0.250
6.60
0.325
0.260
e
2.54
0.100
E1
7.62
0.300
0.270
L
3.18
3.43
0.125
0.135
M
0°
15°
0°
15°
Figure 21. Plastic DIP-24 (0.25) package dimensions
19/26
Package mechanical data
Table 12.
STP16CPS05
TSSOP24 mechanical data
mm.
inch
Dim.
Min.
Typ
A
A1
Max.
Typ.
1.1
0.05
A2
0.15
Max.
0.043
0.002
0.9
0.006
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
20/26
Min.
STP16CPS05
Package mechanical data
Table 13.
Tape & Reel TSSOP24
mm.
inch
Dim.
Min.
A
Typ
Max.
Min.
330
Max.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
13.2
Typ.
0.504
22.4
0.519
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 23. Reel dimensions
21/26
Package mechanical data
Table 14.
STP16CPS05
SO-24 mechanical data
mm.
inch
Dim.
Min.
Typ
A
a1
Max.
Min.
2.65
0.1
Max.
0.104
0.2
a2
0.004
0.008
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
Figure 24. SO-24 package dimensions
22/26
Typ.
°(max.) 8
STP16CPS05
Package mechanical data
Table 15.
Tape & Reel SO-24
mm.
inch
Dim.
Min.
A
Typ
Max.
Min.
330
Max.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
13.2
Typ.
0.504
30.4
0.519
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 25. Reel dimensions
23/26
Package mechanical data
Table 16.
STP16CPS05
TSSOP24 exposed-pad
mm
inch
Dim.
Min.
Typ.
A
1.2
A1
0.15
A2
0.8
b
1
Min.
Typ.
Max.
0.047
0.004
0.006
0.039
0.041
1.05
0.031
0.19
0.30
0.007
0.012
c
0.09
0.20
0.004
0.0089
D
7.7
7.9
0.303
D1
7.8
2.7
0.307
0.311
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
e
0.65
K
0°
L
0.45
0.60
Figure 26. TSSOP24 Dimensions
24/26
Max.
0.059
0.0256
8°
0°
0.75
0.018
8°
0.024
0.030
STP16CPS05
9
Revision history
Revision history
Table 17.
Revision history
Date
Revision
28-Jul-2006
1
Changes
First release
25/26
STP16CPS05
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