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STCS2A Dataheets PDF



Part Number STCS2A
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description 2A max constant current LED driver
Datasheet STCS2A DatasheetSTCS2A Datasheet (PDF)

STCS2A 2 A max constant current LED driver Features ■ Up to 40 V input voltage ■ Less than 0.5 V voltage overhead ■ Up to 2 A output current ■ PWM dimming pin ■ Shutdown pin ■ LED disconnection diagnostic ■ Slope control with external cap Applications ■ LED constant current supplying for varying input voltages ■ Low voltage lighting ■ Small appliances LED lighting ■ Car LED lights Description The STCS2A is a BiCMOS constant current source designed to provide a precise constant current starting .

  STCS2A   STCS2A



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STCS2A 2 A max constant current LED driver Features ■ Up to 40 V input voltage ■ Less than 0.5 V voltage overhead ■ Up to 2 A output current ■ PWM dimming pin ■ Shutdown pin ■ LED disconnection diagnostic ■ Slope control with external cap Applications ■ LED constant current supplying for varying input voltages ■ Low voltage lighting ■ Small appliances LED lighting ■ Car LED lights Description The STCS2A 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 10 1 PowerSO-10 solution for driving LEDs in low voltage applications such as 5 V, 12 V or 24 V giving benefits in terms of precision, integration and reliability. The current is set with external resistor up to 2 A with a ± 10 % precision; a dedicated pin allows implementing PWM dimming. An external capacitor allows setting the slope for the current rise from tens of microseconds to tens of milliseconds allowing reduction of EMI. An open-drain pin output provides information on load disconnection condition. Table 1. Device summary Order code STCS2ASPR July 2008 Package PowerSO-10 Rev 3 Packaging 600 parts per reel 1/18 www.st.com 18 Contents Contents STCS2A 1 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Detail description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.1 Current setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.2 Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.3 PWM dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.4 Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8.1 Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8.2 Thermal considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2/18 ST.


BP1808 STCS2A BP3316D


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