STCS05 STMicroelectronics, STCS05 Datasheet
STCS05
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STCS05 Summary of contents
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... Small appliances LED lighting ■ Car LED lights Description The STCS05 is a BiCMOS constant current source designed to provide a precise constant current starting from a varying input voltage source. The main target is to replace discrete components solution for driving LEDs in low voltage applications such giving benefits in terms of precision, integration and reliability ...
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Contents 1 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... IN IN OFF OFF OFF OFF C C BYP BYP 0.1µF 0.1µ PWM PWM STCS05 STCS05 DISC DISC GND GND Load disconnection Load disconnection (Open Drain output) (Open Drain output) DRAIN DRAIN C C DRAIN DRAIN 0.47µF 0.47µF FB ...
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Pin configuration Figure 2. Pin connections (top view) Table 2. Pin description Pin n° Symbol 1 V Supply voltage CC 2 PWM PWM dimming input 3 EN Shutdown pin 4 DRAIN Internal N-MOSFET drain 5 FB External resistor connection ...
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Maximum ratings Table 3. Absolute maximum ratings Symbol V DC supply voltage CC V Drain voltage D PWM, EN, DISC Logic pins FB Configuration pins ESD Human body model (all pins) (1) T Junction temperature J T Storage temperature ...
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Electrical characteristics Table 5. Electrical characteristics ( 100 mA 100 nF typical values are at T BYP Symbol Parameter V Supply voltage range CC Output current range I Output ...
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Timing Figure 3. PWM and output current timing PWM PWM Current Current Figure 4. Block diagram High Voltage High Voltage Preregulator Preregulator 3.3 V 3.3 V Enable Enable EN EN Input ...
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Typical performance characteristics Figure DRAIN CC A Figure temperature DRAIN Figure temperature CC 8/ °C Figure 6. 1000 1000 100 100 ...
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... LED sources. 6.4 Diagnostic When STCS05 mode (EN is high), the device is able to detect disconnection or fail of the LED string monitoring V pulled low regardless the PWM pin status. This information can be used by the system to inform that some problem happens in the LEDs. ...
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... Figure 11. Reverse polarity condition 7.2 Thermal considerations The STCS05 is able to control a LED current up to 500 mA and able to sustain a voltage on the drain pin Those operating conditions are however limited by thermal constraints, the thermal resistances shown in the thermal data section is the typical ones. ...
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In this case V DRAIN P = (1.2 - 0. The junction temperature will be 100 x 0.391 + °C. J The following pictures show the ...
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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 ...
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SO-8 mechanical data mm. Dim. Min. Typ. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4.80 E 3.80 e 1.27 H 5.80 h 0.25 L 0.40 k ddd inch. Max. Min. Typ. 1.75 0.053 0.25 0.04 1.65 ...
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Tape & reel SO-8 mechanical data Dim. Min 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 14/16 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 22.4 8.5 0.319 5.9 ...
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Revision history Table 6. Document revision history Date Revision 03-Oct-2007 1 15-Feb-2008 2 05-May-2008 3 02-Jul-2008 4 Changes Initial release. Modified: Figure 1 on page 3, Figure 4 on page Modified: Table 2 on page 4, pin 7 description. ...
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... 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. ...