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June 2010 Doc ID 14191 Rev 5 1/23

STP04CM05

4-bit constant current power-LED sink driver

Features

■ 4 constant current output channels

■ Adjustable output current through one external

resistor

■ Can be driven by a 3.3 V microcontroller

■ Serial data IN/parallel data OUT

■ Output current: 80-400 mA

■ 20 V of output driving capability

■ 30 MHz clock frequency

■ UVLO (under voltage lockout) and

POR (power ON reset)

■ TSD, thermal shutdown, output off when

junction temperature exceeds limit

■ Operating free-air temperature range -40° to

125 °C

■ ESD protection 2.5 kV HBM, 200 V MM

■ Available in high thermal TSSOP exposed pad.

Description

The STP04CM05 is a high-power LED driver and

4-bit shift register designed for Power-LED

applications.

The STP04CM05 contains a 4-bit serial IN,

parallel OUT shift register that feeds a 4-bit

D-type storage register. In the output stage, four

regulated current sources were designed to

provide 80-400 mA constant current to drive high

power LEDs.

The STP04CM05 guarantees 20 V output driving

capability, allowing users to connect more LEDs in

series. The high clock frequency, 30 MHz, also

satisfies the system requirements which include

high volume data transmission.

The STP04CM05 is well suited for very high

brightness displays and special lighting

applications.

The STP04CM05 is offered in SO-14 and

TSSOP16 exposed pad packages.

SO-14

TSSOP16

(Exposed pad)

Table 1. Device summary

Order codes Package Packaging

STP04CM05MTR SO-14 (tape and reel) 2500 parts per reel

STP04CM05XTTR TSSOP16 exposed-pad (tape and reel) 2500 parts per reel

www.st.com

Summary of content (23 pages)

PAGE 1
STP04CM05 4-bit constant current power-LED sink driver Features ■ 4 constant current output channels ■ Adjustable output current through one external resistor ■ Can be driven by a 3.
PAGE 2
Contents STP04CM05 Contents 1 Internal schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum rating . . . .
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STP04CM05 1 Internal schematic Internal schematic Figure 1.
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Pin settings STP04CM05 2 Pin settings 2.1 Pin connection Figure 2. Pin connection SO-14 TSSOP16 (exposed pad) Note: The exposed pad should be electrically connected to a metal land electrically isolated or connected to ground. 2.2 Pin description Table 2.
PAGE 5
STP04CM05 3 Maximum rating 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. Table 3. Absolute maximum ratings Symbol 3.
PAGE 6
Maximum rating 3.2 STP04CM05 Recommended operating conditions Table 5. Symbol Recommended operating conditions Parameter Test conditions Min. Typ. Max. Unit 3.3 5.0 5.5 V 19 V 400 mA VDD Supply voltage VO Output voltage IO Output current OUTn VDD = 5 V 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.
PAGE 7
STP04CM05 4 Electrical characteristics Electrical characteristics TA = 25 °C, unless otherwise specified. Table 6. Current accuracy Current accuracy Output voltage Output current Between bits Between ICs Typ. ± 1% ± 6% ≥ 1.4 V Table 7. Symbol 80 to 400 mA Electrical characteristics (VDD = 3.3 to 5 V) Parameter Test conditions Min. Typ. Max. Unit VIH Input voltage high level 0.7 VDD VDD V VIL Input voltage low level GND 0.
PAGE 8
Electrical characteristics Table 8. STP04CM05 Switching characteristics (VDD = 3.3 to 5 V) Symbol Parameter tPLH1 Propagation delay time, CLK-OUTn, LE = H, /OE = L tPLH2 Propagation delay time, LE-OUTn, /OE = L tPLH3 Min. Typ. Max. VDD = 3.3 V - 290 377 VDD = 5 V - 200 260 VDD = 3.3 V - 200 260 VDD = 5 V - 140 180 Propagation delay time, /OE-OUTn, LE = H VDD = 3.3 V - 240 310 VDD = 5 V - 170 220 Propagation delay time, CLK-SDO VDD = 3.
PAGE 9
STP04CM05 5 Equivalent circuit of inputs and outputs Equivalent circuit of inputs and outputs Figure 3. OE terminal Figure 4. LE terminal Figure 5.
PAGE 10
Equivalent circuit of inputs and outputs Figure 6.
PAGE 11
STP04CM05 6 Timing diagrams Timing diagrams Figure 7. Timing diagram OFF ON OFF ON OFF ON OFF ON Note: 1 Latch and output enable are level sensitive and are not synchronized with rising-or-falling edge of CLK signal. 2 When LE terminal is low level, the latch circuit hold previous set of data. 3 When LE terminal is high level, the latch circuit refresh new set of data from SDI chain.
PAGE 12
Timing diagrams Figure 8.
PAGE 13
STP04CM05 Figure 9. Timing diagrams Clock, serial-in, latch, enable, outputs Figure 10.
PAGE 14
Test circuit 7 STP04CM05 Test circuit Figure 11. DC characteristic Figure 12.
PAGE 15
STP04CM05 Typical characteristics Figure 13. Output current-REXT resistor Figure 14. Output current vs dropout voltage 1400 1800 1600 Vdrop (mV) Rext (Ohm) 1200 Avg @ 3.3V Avg @ 5.0V 1200 Temp. = 25°C Vdd = 5.0V Vdrop = from 0.3V to 1.2V Iset = 50mA; 80mA; 100mA; 150mA; 350mA; 400mA; 1400 1000 800 600 400 1000 800 600 400 Temp. = 25°C Vdd = 3.3V; 5.0V 200 200 0 0 100 200 300 400 500 600 Ouput Currnt (mA) 0 0 50 100 150 200 250 300 350 400 450 Iset (mA) Figure 15.
PAGE 16
Typical characteristics STP04CM05 Figure 16. Four power-LED typ. application circuit 3.3 to 5V 0.3 to 1.4V f = 0 to 100kHz Note: VL will be determined by the VF of the LEDs Condition: TA = 25 °C, Vdd = 5 V,VL = 3 V, Rext = 227 Ω Figure 17. tON OE Ioutn 16/23 Figure 18.
PAGE 17
STP04CM05 9 Package mechanical data 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: www.st.com. ECOPACK® is an ST trademark.
PAGE 18
Package mechanical data Table 9. STP04CM05 SO-14 mechanical data mm. inch Dim. Min Typ A a1 Max Typ 1.75 0.1 0.2 a2 Max 0.068 0.003 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 c1 0.019 45° (typ.) D 8.55 8.75 0.336 0.344 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 7.62 0.300 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M 0.68 S 8° (max.) Figure 19.
PAGE 19
STP04CM05 Package mechanical data Table 10. TSSOP16 exposed-pad mechanical data mm. Dim. Min Typ Max A 1.2 A1 0.15 A2 0.8 b 0.19 0.3 c 0.09 0.2 D 4.9 5 5.1 D1 2.7 3.0 3.3 E 6.2 6.4 6.6 E1 4.3 4.4 4.5 E2 2.7 3.0 3.3 e 1 1.05 0.65 K 0° L 0.45 8° 0.6 0.75 Figure 20.
PAGE 20
Package mechanical data Table 11. STP04CM05 Tape and reel SO-14 mm. inch Dim. Min Typ A Max 330 13.2 Typ Max 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 0.504 22.4 0.519 0.882 Ao 6.4 6.6 0.252 0.260 Bo 9 9.2 0.354 0.362 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 Figure 21.
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STP04CM05 Package mechanical data Table 12. TSSOP16 tape and reel mm. inch Dim. Min Typ A Max Min 330 13.2 Max 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T Typ 0.504 22.4 0.519 0.882 Ao 6.7 6.9 0.264 0.272 Bo 5.3 5.5 0.209 0.217 Ko 1.6 1.8 0.063 0.071 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 Figure 22.
PAGE 22
Revision history 10 STP04CM05 Revision history Table 13. 22/23 Document revision history Date Revision Changes 26-Nov-2007 1 Initial release 16-Jan-2008 2 Added: Figure 15 on page 15 and Figure 19 on page 17, Updated: Table 8 on page 8. 12-Mar-2008 3 Updated: Figure 8 on page 12. 23-Jun-2008 4 Updated: Table 1 on page 1, Figure 21 on page 20. 07-Jun-2010 5 Updated: Note: on page 4, Table 10 on page 19.
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STP04CM05 Please Read Carefully: 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.