STP16CPC26 STMicroelectronics, STP16CPC26 Datasheet

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STP16CPC26

Manufacturer Part Number
STP16CPC26
Description
Low voltage 16-bit constant current LED sink driver
Manufacturer
STMicroelectronics
Datasheet

Specifications of STP16CPC26

Output Current
5 mA to 90 mA
Max Clock Frequency
30 MHz

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Features
Applications
Description
The STP16CPC26 is a monolithic, low voltage,
16-bit constant current LED sink driver. The
device contains a 16-bit shift register and data
latches, which convert serial input data into
parallel output format. In the output stage sixteen
regulated current generators provide 5 mA to 90
mA constant current to drive LEDs. The current is
Table 1.
April 2011
16 constant current output channels
Adjustable output current through external
resistor
Output current: 5 mA to 90 mA
±1% typical current accuracy bit to bit
Max clock frequency: 30 MHz
20 V current generators rated voltage
5 V power supply
Thermal shutdown for overtemperature
protection
Video display panel LED driver
Special lighting
STP16CPC26XTTR
STP16CPC26MTR
STP16CPC26PTR
STP16CPC26TTR
Device summary
Order codes
Low voltage 16-bit constant current LED sink driver
Doc ID 18469 Rev 2
TSSOP24 exposed pad
TSSOP24
QSOP-24
Package
SO-24
externally adjusted through a resistor. LED
brightness can be adjusted from 0% to 100% via
OE
The STP16CPC26 guarantees a 20 V driving
capability, allowing users to connect more LEDs in
series to each current source.
The high 30 MHz clock frequency makes the
device suitable for high data rate transmission.
The thermal shutdown (170°C with about 15°C
hysteresis) assures protection from
overtemperature events.
The STP16CPC26 is housed in four different
packages: QSOP-2, SO-24, TSSOP-24 and
HTSSOP-24 (with exposed pad).
pin.
TSSOP24
QSOP-24
STP16CPC26
2500 parts per reel
2500 parts per reel
2500 parts per reel
1000 parts per reel
(exposed pad)
Packaging
TSSOP24
SO-24
www.st.com
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STP16CPC26 Summary of contents

Page 1

... The high 30 MHz clock frequency makes the device suitable for high data rate transmission. The thermal shutdown (170°C with about 15°C hysteresis) assures protection from overtemperature events. The STP16CPC26 is housed in four different packages: QSOP-2, SO-24, TSSOP-24 and HTSSOP-24 (with exposed pad). Package SO-24 ...

Page 2

... Equivalent circuits for inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . 9 7 Typical test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9 Current generators characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 9.1 Current setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 9.2 Current accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 9.3 Generators voltage drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 9.4 Turn-on and turn-off characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 10 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 11 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 2/27 Doc ID 18469 Rev 2 STP16CPC26 ...

Page 3

... STP16CPC26 1 Pin description Figure 2. Pin connection Note: Exposed-pad should be electrically connected to a metal land electrically isolated or connected to ground Table 2. Pin description Pin N° 5-20 OUT 0- Symbol GND Ground terminal SDI Serial data input terminal CLK Clock input terminal ...

Page 4

... STG Thermal resistance junction-case R (1) thJA 1. According with JEDEC standard 51-7B 2. The exposed pad should be soldered directly to the PCB to realize the thermal benefits. 4/27 Parameter Parameter SO-24 TSSOP24 (2) TSSOP24 QSOP24 Doc ID 18469 Rev 2 STP16CPC26 Value Unit - 1600 mA ±2 ...

Page 5

... STP16CPC26 3 Electrical characteristics 25°C, unless otherwise specified DD A Table 5. Electrical characteristics Symbol Parameter V Supply voltage DD V Input voltage high level IH V Input voltage low level IL V Serial data output voltage OL (1) (SDO Output leakage current OH (2) I Output current ...

Page 6

... I = 20mA L out GND 0.8V 51Ω =10pF 60mA L out 51, C =10pF 60mA L L out Doc ID 18469 Rev 2 STP16CPC26 Min. Typ. Max. Unit - - 30 MHz 100 ns 100 150 - ...

Page 7

... STP16CPC26 4 Simplified Internal Block diagram Figure 3. STP16CPC26 simplified block diagram Simplified Internal Block diagram Doc ID 18469 Rev 2 7/27 ...

Page 8

... Typical application circuit 5 Typical application circuit Figure 4. Typical application circuit 8/27 Doc ID 18469 Rev 2 STP16CPC26 ...

Page 9

... STP16CPC26 6 Equivalent circuits for inputs and outputs Input terminals LE and OE have pull-down and pull-up connection respectively. CLK and SDI must be connected to external circuit to fix the logic level. Figure 5. OE terminal Figure 6. LE terminal Equivalent circuits for inputs and outputs Doc ID 18469 Rev 2 ...

Page 10

... Equivalent circuits for inputs and outputs Figure 7. CLK, SDI terminal Figure 8. SDO terminal 10/27 Doc ID 18469 Rev 2 STP16CPC26 ...

Page 11

... STP16CPC26 7 Typical test circuits Figure 9 and Figure 10 (e.g. input voltage high/low level, output leakage current, supply current, etc.) and switching characteristics (propagation delays, set-up and hold time, rise and fall time of V The resistor R and capacitor C L LED behavior. Figure 9. Typical test circuit for electrical characteristics Figure 10 ...

Page 12

... Every rising edge of the CLK signal, a new data on SDI pin is sampled. This data is loaded into the shift register, whereas a bit is shifted out from SDO. Figure 11. Timing diagram 12/27 Figure 11 and the truth table in Doc ID 18469 Rev 2 STP16CPC26 Table 7 explain how to send ...

Page 13

... STP16CPC26 Table 7. Truth table CLOCK ? ? ? ? ? 1. OUTn = ON when OUTn = OFF when Figure 12. Timing for clock signal, serial-in and serial out data The correct sampling of the data depends on the stability of the data at SDI on the rising edge of the clock signal and it is assured by a proper data setup and hold time (t ...

Page 14

... Timing diagrams Figure 13. Timing for clock signal serial-in data, latch enable, output enable and outputs Figure 14. Outputs 14/27 Doc ID 18469 Rev 2 STP16CPC26 ...

Page 15

... STP16CPC26 9 Current generators characteristics 9.1 Current setting The current of all outputs is programmed through an external resistor connected to R-EXT pin, as shown in Figure The curve in Figure 16 connected to R-EXT pin, whereas the Figure 15. Resistor for current programming Figure 16. Output current vs R-EXT resistor Table 8. Recommended values of Rext for some output current value ...

Page 16

... Figure 17 and Table 9. V DROP shows the turn-on and turn-off time of an output of STP16CPC26 with a Doc ID 18469 Rev 2 STP16CPC26 slightly higher DROP @ 3.3V [mV [mV] DROP 170 ...

Page 17

... STP16CPC26 In this example the turn-on and turn-off time (measured between the 10% and 90% of the voltage of the OUTn pin) are respectively around 55 ns and 75 ns. Figure 18. Turn-on time of the outputs Current generators characteristics Figure 19. Turn-off time of the outputs Doc ID 18469 Rev 2 17/27 ...

Page 18

... Thermal shutdown 10 Thermal shutdown The STP16CPC26 is featured with a thermal shutdown. This protection is triggered if the junction temperature reaches 170°C. When the thermal shutdown is activated, all outputs are turned off independently on the data latched. Once the temperature decreases (thermal shutdown hysteresis is typically 15°C), the outputs are enabled again and the device keeps on working ...

Page 19

... STP16CPC26 11 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: ® ECOPACK trademark. Table 10. QSOP-24 mechanical data Dim ...

Page 20

... Package mechanical data Figure 20. QSOP-24 package dimensions 20/27 Doc ID 18469 Rev 2 STP16CPC26 ...

Page 21

... STP16CPC26 Table 11. TSSOP24 mechanical data Dim Figure 21. TSSOP24 package dimensions mm. Min Typ Max 1.1 0.05 0.15 0.9 0.19 0.30 0.09 0.20 7.7 7.9 4.3 4.5 0.65 BSC 6.25 6.5 0° 8° 0.50 0.70 Doc ID 18469 Rev 2 Package mechanical data inch Min Typ Max 0.043 0.002 0.006 0.035 0.0075 0.0118 0.0035 0.0079 0.303 0.311 ...

Page 22

... Tape and reel TSSOP24 Dim Figure 22. Reel dimensions 22/27 mm. Min Typ Max - 330 12.8 - 13.2 20 22.4 6 8.2 - 8.4 1.7 - 1.9 3.9 - 4.1 11.9 - 12.1 Doc ID 18469 Rev 2 STP16CPC26 inch Min Typ Max - 12.992 0.504 - 0.519 0.795 - 2.362 - - 0.882 0.268 - 0.276 0.323 - 0.331 0.067 - 0.075 0.153 - 0.161 0.468 - 0.476 ...

Page 23

... STP16CPC26 Table 13. SO-24 mechanical data Dim Figure 23. SO-24 package dimensions mm. Min Typ Max 2.65 0.1 0.2 2.45 0.35 0.49 0.23 0.32 0.5 15.20 15.60 10.00 10.65 1.27 13.97 7.40 7.60 0.50 1.27 Doc ID 18469 Rev 2 Package mechanical data inch Min Typ 0.004 0.014 0.009 0.020 45°(typ.) 0.598 0.393 0.050 0.550 0.291 0.020 °(max.) 8 Max 0 ...

Page 24

... Table 14. Tape and reel SO-24 Dim Figure 24. Reel dimensions 24/27 mm. Min Typ Max - 330 12.8 - 13.2 20 30.4 10.8 - 11.0 15.7 - 15.9 2.9 - 3.1 3.9 - 4.1 11.9 - 12.1 Doc ID 18469 Rev 2 STP16CPC26 inch Min Typ Max - 12.992 0.504 - 0.519 0.795 - 2.362 - - 1.197 0.425 - 0.433 0.618 - 0.626 0.114 - 0.122 0.153 - 0.161 0.468 - 0.476 ...

Page 25

... STP16CPC26 Table 15. TSSOP24 exposed-pad Dim Figure 25. TSSOP24 dimensions mm Min Typ Max 1.2 0.15 0.8 1 1.05 0.19 0.30 0.09 0.20 7.7 7.8 7.9 4.7 5.0 5.3 6.2 6.4 6.6 4.3 4.4 4.5 2.9 3.2 3.5 0.65 0° 8° 0.45 0.60 0.75 Doc ID 18469 Rev 2 Package mechanical data inch Min Typ Max 0.047 0.004 0.006 0.031 0.039 0.041 0.007 0.012 0.004 0.0089 0.303 ...

Page 26

... Revision history 12 Revision history Table 16. Document revision history Date 04-Mar-2011 05-Apr-2011 26/27 Revision 1 First release 2 Updated Table 5 Doc ID 18469 Rev 2 STP16CPC26 Changes ...

Page 27

... STP16CPC26 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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