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STP04CM596
4-Bit constant current for power-LED LED sink driver
General features

4 constant current output channels Adjustable output current through one external resistor Serial data IN/parallel data OUT Serial OUT change state on the failing edges of clock Four outputs current: 80-500mA 25MHz clock frequency Available in high thermal TSSOP exposed pad.
TSSOP16 (Exposed pad) Dip-14 SO-14
Description
The STP04CM596 is a high-power LED Driver and 4-bit shift register designed for PowerLED applications. The STP04CM596 contains a 4-bit serial IN, parallel OUT shift register that feeds a 4-bit Dtype storage register. In the output stage, four regulated current sources were designed to provide 80-500mA constant current to drive the high powered LEDs. The STP04CM596 guarantees 16V output driving capability, allowing users to connect more LEDs in series. The high clock frequency, 25 MHz, also satisfies the system requirements which include high volume data transmission. The STP04CM596 is well suited for very high brightness displays and special lighting applications. The STP04CM596 is offered in DIP-14, SO-14 and TSSOP16 Exposed Pad packages.
Order codes
Part Number STP04CM596B1R STP04CM596M STP04CM596MTR STP04CM596XTTR Package DIP-14 SO-14 (Tube) SO-14 (Tape & Reel) TSSOP16 Exposed-pad (Tape & Reel) Packaging 25 parts per tube 50 parts per tube 2500 parts per reel 2500 parts per reel
July 2006
Rev 5
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Contents
STP04CM596
Contents
1 2 Internal schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 2.2 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 5 6 7 8 9 10
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Equivalent circuit of inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . 9 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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STP04CM596
Internal schematic
1
Internal schematic
Figure 1. Block diagram
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Pin settings
STP04CM596
2
2.1
Pin settings
Pin connection
Figure 2. Pin connection
DIP-14/SO-14
TSSOP16 (Exposed pad)
2.2
Pin description
Table 1. Pin description
DIP-14 and SO-14 Pin N 1 2 3 4 5 6 7, 8 9 10 11 12 13 14 TSSOP16 Pin N 1, 2 3 4 5 6 7 8, 9, 12 10 11 13 14 15 16 Symbol GND SDI CLK LE OUT 0 OUT 1 N.C. OUT 2 OUT 3 OE SDO R-EXT VDD Name and function Ground terminal Serial data input terminal Clock input terminal Latch input terminal Output terminal Output terminal Not connected Output terminal Output terminal Output enable input terminal (active low) Serial data out terminal Constant current programming 5V supply voltage terminal
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STP04CM596
Maximum rating
3
Maximum rating
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 2. Absolute maximum ratings
Symbol VDD VO IO VI IGND fCLK TOPR TSTG Supply voltage Output voltage Output current Input voltage GND terminal current Clock frequency Operating temperature range Storage temperature range Parameter Value 0 to 7 -0.5 to 16 500 -0.4 to VDD+0.4 2000 25 -40 to +125 -55 to +150 Unit V V mA V mA MHz C C
3.1
Thermal data
Table 3. Thermal data
Symbol
RthJA
Parameter Thermal resistance junction-ambient
DIP-14 70 (1)
SO-14 105 (2)
TSSOP16 37.5 (3)
Unit C/W
1. 1W of dissipated power, mounted on the board 2. 1W of dissipated power ,mounted on SM PCB1 SGS board 3. Using the PCB Multi-Layer JEDEC Standard Test Boards
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Maximum rating
STP04CM596
3.2
Recommended operating conditions
Table 4. Recommended operating conditions
Symbol VDD VO IO IOH IOL VIH VIL twLAT twCLK twEN tSETUP(D) tHOLD(D) tSETUP(L) tHOLD(E) fCLK TOPR Parameter Supply voltage Output voltage Output current Output current Output current Input voltage Input voltage LE pulse width CLK pulse width OE pulse width Setup time for DATA Hold time for DATA Setup time for LATCH Hold time for ENABLE Clock frequency Operating temperature range Cascade operation (1) -40 VDD = 3.0 to 3.6V OUTn VDD = 5V Serial-OUT Serial-OUT 0.7VDD -0.3 20 20 400 20 15 15 60 6.5 7.0 100 3.3 1.5 5 38 25 +125 80 Test conditions Min 3.3 Typ 5.0 Max 5.5 16.0 500 +1 -1 VDD+0.3 0.3VDD Unit V V mA mA mA V V ns ns ns ns ns ns ns MHz C
1. If multiple devices are cascaded, it may not be possible achieve the maximum data transfer. Please consider the timing conditions carefully.
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STP04CM596
Electrical characteristics
4
Electrical characteristics
Table 5. Current accuracy
Current accuracy Output voltage Between bits 0.7V Typ. 1% Between ICs 6% 80 to 500 mA Output current
Table 6. Electrical characteristics (VDD = 5V, TA = 25C, unless otherwise specified.)
Symbol VIH VIL IOH VOL VOH IOL1 IOL2 IOL1 IOL2 RSIN(up) Output current error between bit (All Output ON) Pull-up resistor Parameter Input voltage high level Input voltage low level Output leakage current Output voltage (Serial-OUT) Output voltage (Serial-OUT) Output current VOH = 16 V IOL = 1mA IOH = -1mA VO = 0.7VREXT = 910 VO = 0.7VREXT = 160 VO = 0.7VREXT = 910 VO = 0.7VREXT = 160 150 100 REXT = OPEN OUT 0 to 3 = OFF REXT = 470 OUT 0 to 3 = OFF REXT = 250 OUT 0 to 3 = OFF REXT = 470 OUT 0 to 3 = ON Supply current (ON) IDD(ON2) REXT = 250 OUT 0 to 3 = ON VDD-0.4V 77 470 82 500 1 0.5 300 200 0.3 5.2 8.0 5.6 8.3 87 530 3 3 600 400 0.6 8.0 12 8.0 12 mA Test conditions Min 0.7VDD GND Typ Max VDD 0.3VDD 10 0.4 Unit V V A V V mA mA % % K K
RSIN(down) Pull-down resistor IDD(OFF1) IDD(OFF2) Supply current (OFF) IDD(OFF3) IDD(ON1)
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Electrical characteristics
STP04CM596
Table 7. Switching characteristics (VDD=5V, T = 25C, unless otherwise specified.)
Symbol tPLH1 tPLH2 tPLH3 tPLH tPHL1 tPHL2 tPHL3 tPHL tr tf Parameter 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, OE = L Propagation delay time, LE -OUTn, OE = L Propagation delay time, OE-OUTn, LE = H Propagation delay time, CLK-SDO Output rise time (1) Output fall time (1) VO = 1.6 V, RL = 1 REXT = 470 VDD = 5 VVIH = VDD VIL = GNDCL = 13pF IO = 40mAVL = 3 V REXT = 470 RL = 65 Test conditions Min Typ 100 100 90 30 40 35 40 30 300 55 Max 160 150 140 40 60 50 70 40 400 80 Unit ns ns ns ns ns ns ns ns ns ns
1. If multiple devices are cascaded, it may not be possible achieve the maximum data transfer. Please consider the timing conditions carefully.
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STP04CM596
Equivalent circuit of inputs and outputs
5
Equivalent circuit of inputs and outputs
Figure 3. OE terminal
Figure 4.
LE terminal
Figure 5.
CLK, SDI terminal
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Equivalent circuit of inputs and outputs Figure 6. SDO terminal
STP04CM596
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STP04CM596
Timing diagrams
6
Timing diagrams
Figure 7. Timing diagram
Note: 1 2 3
The latches circuit holds data when the LE terminal is Low. When the LE terminal is at a High level, the latch circuit holds the data it passes from the input to the output. When the OE terminal is at a Low level, the output terminals OUT0 to OUT3 respond to the data, either ON or OFF. When the OE terminal is at a High level, it switches off all the data on the output terminal.
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Timing diagrams Figure 8. Clock, serial-IN, serial-OUT
STP04CM596
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STP04CM596 Figure 9. Clock, serial-IN, latch, enable, outputs
Timing diagrams
Figure 10. Outputs
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Test circuit
STP04CM596
7
Test circuit
Figure 11. DC characteristic
Figure 12. AC characteristic
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STP04CM596
Typical characteristics
8
Typical characteristics
Figure 13. Output current-REXT resistor Figure 14. Output current vs dropout voltage
Figure 15. Output current vs IOL(%)
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Typical characteristics Figure 16. Blue powerLED typ. application circuit
STP04CM596
Note:
VL will be determined by the VF of the LEDs Table 8. Typ. output waveform with blue powerLEDs
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STP04CM596
Package mechanical data
9
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) 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
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Package mechanical data
STP04CM596
Table 9. DIP-14 mechanical data
mm. Dim. Min a1 B b b1 D E e e3 F I L Z 1.27 3.3 2.54 0.050 8.5 2.54 15.24 7.1 5.1 0.130 0.100 0.51 1.39 0.5 0.25 20 0.335 0.100 0.600 0.280 0.201 1.65 Typ Max Min 0.020 0.055 0.020 0.010 0.787 0.065 Typ Max inch
Figure 17. Package dimensions
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STP04CM596
Package mechanical data
Table 10. SO-14 mechanical data
mm. Dim. Min A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 8.55 5.8 1.27 7.62 4.0 5.3 1.27 0.68 8 (max.) 0.149 0.181 0.019 8.75 6.2 0.35 0.19 0.5 45 (typ.) 0.336 0.228 0.050 0.300 0.157 0.208 0.050 0.026 0.344 0.244 0.1 Typ Max 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 Min Typ Max 0.068 0.007 0.064 0.018 0.010 inch
Figure 18. Package dimensions
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Package mechanical data
STP04CM596
Table 11. TSSOP16 (Exposed pad) mechanical data
mm. Dim. Min A1 A2 b c D E E1 e K L 0 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8 0.75 0 0.018 0.024 1 Typ Max 0.15 1.05 0.30 0.20 5.1 6.6 4.48 Min 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8 0.030 Typ 0.004 0.039 Max 0.006 0.041 0.012 0.0079 0.201 0.260 0.176 inch
Figure 19. Package dimensions
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STP04CM596
Package mechanical data
Table 12. Tape and reel SO-14
mm. Dim. Min A C D N T Ao Bo Ko Po P 6.4 9 2.1 3.9 7.9 12.8 20.2 60 22.4 6.6 9.2 2.3 4.1 8.1 0.252 0.354 0.082 0.153 0.311 Typ Max 330 13.2 0.504 0.795 2.362 0.882 0.260 0.362 0.090 0.161 0.319 Min Typ Max 12.992 0.519 inch
Figure 20. Tape and reel dimensions
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Package mechanical data
STP04CM596
Table 13. TSSOP16 tape and reel
mm. Dim. Min A C D N T Ao Bo Ko Po P 6.7 5.3 1.6 3.9 7.9 12.8 20.2 60 22.4 6.9 5.5 1.8 4.1 8.1 0.264 0.209 0.063 0.153 0.311 Typ Max 330 13.2 0.504 0.795 2.362 0.882 0.272 0.217 0.071 0.161 0.319 Min Typ Max 12.992 0.519 inch
Figure 21. Tape and reel dimensions
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STP04CM596
Revision history
10
Revision history
Table 14. Revision history
Date 26-Oct-2006 05-Apr-2006 23-May-2006 08-Jun-2006 20-Jun-2006 Revision 1 2 3 4 5 Initial release New template Updated packaging information Typos in cover page Block diagram updated Figure 1 on page 3, equivalent circuits updated Figure 3, 4, 5, 6, on page 9 and 10 Changes
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STP04CM596
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