STCS1APUR STMicroelectronics, STCS1APUR Datasheet
STCS1APUR
Specifications of STCS1APUR
STCS1APUR
Available stocks
Related parts for STCS1APUR
STCS1APUR Summary of contents
Page 1
... LEDs in low voltage applications such giving benefits in terms of precision, integration and reliability. Table 1. Device summary Order codes STCS1APUR STCS1APHR July 2008 1.5 A max constant current LED driver DFN8 ( mm) The current is set with external resistor up to 1.5 A with a ± precision; a dedicated pin allows implementing PWM dimming ...
Page 2
Contents 1 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3
Application diagram Figure 1. Typical application diagram for 0.5 A LED current 4.5V to 40V 4.5V to 40V BAT46ZFILM BAT46ZFILM R R 100 ohm 100 ohm IN IN OFF OFF OFF OFF C C BYP ...
Page 4
Pin configuration Figure 2. Pin connections (top view) DFN8 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 Feedback input. The control ...
Page 5
Maximum ratings Table 3. Absolute maximum ratings Symbol V DC supply voltage CC DRAIN Drain pin PWM, EN, DISC Logic pins SLOPE, FB Configuration pins ESD Human body model (all pins) (1) T Junction temperature J T Storage temperature ...
Page 6
Electrical characteristics Table 5. Electrical characteristics ( µF; C DRAIN BYP Symbol Parameter V Supply voltage range CC Output current range I Output current O Regulation (percentage with respect to V =12V Feedback voltage ...
Page 7
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 ...
Page 8
Typical performance characteristics Figure DRAIN CC A Figure Temperature DRAIN Figure Temperature CC 8/19 = 25°C Figure 6. Figure 8. Figure 10 DRAIN ...
Page 9
Figure 11 rise fall SLOPE Figure 13. Dimming operation: Rise C = 1nF SLOPE Figure 12. Turn-on time C = floating SLOPE Figure 14. Dimming operation: Fall C = 1nF SLOPE 9/19 ...
Page 10
Detail description The STCS1A 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 ...
Page 11
Diagnostic When STCS1A 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 ...
Page 12
Application information 8.1 Reverse polarity protection STCS1A must be protected from reverse connection of the supply voltage. Since the current sunk from V pin is in the range of 450 µA a small diode connected protect ...
Page 13
LEDs current: 500 mA; – Package: DFN8 3x3 mm; – 50° this case V DRAIN P = (1.2 - 0. The junction temperature will be: T ...
Page 14
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 ...
Page 15
DFN8 (3x3 mm) mechanical data mm. Dim. Min. Typ. A 0.80 0.90 A1 0.02 A2 0.70 A3 0.20 b 0.18 0.23 D 3.00 D2 2.23 2.38 E 3.00 E2 1.49 1.64 e 0.50 L 0.30 0.40 mils. Max. Min. Typ. ...
Page 16
PowerSO-8 mechanical data Dim. Min 0.00 A2 1.25 b 0.31 c 0.17 D 4.80 D1 2.24 E 5.80 E1 3. 0.25 L 0.40 k 0° ccc 16/19 mm. Typ. Max. Min. 1.70 0.15 0.00 ...
Page 17
Tape & reel QFNxx/DFNxx (3x3) mechanical data mm. Dim. Min. Typ 12 3.3 Bo 3 Max. Min. 180 13.2 0.504 0.795 2.362 14 inch. Typ. Max. ...
Page 18
Revision history Table 6. Document revision history Date Revision 19-Feb-2008 1 02-Jul-2008 2 18/19 Changes Initial release. Modified: Table 5 on page 6. ...
Page 19
... 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. ...