STCS2 Datasheet, PDF (4/16 Pages) STMicroelectronics – 2 A max constant current LED driver

Pin configuration
2
Pin configuration
Figure 2. Pin connections (top view)
STCS2
Table 2.
Pin n°
1
2
3
4
5
6
7
8
9
10
Pin description
Symbol
Note
V_CC
PWM
Supply voltage
PWM dimming input
EN
N.C.
DRAIN
SOURCE
Shutdown
Not connected
Internal N-MOSFET drain
Internal N-MOSFET SOURCE. Reference voltage is 100 mV. An external resistor
between SOURCE and GND pins sets different current levels for different application
needs
FB
GND
N.C.
DISC
Feedback input. The control loop regulates the current in such a way that the average
voltage at the FB input is 100 mV (nominal). The cathode of the LED and a resistor to
ground to set the LED current should be connected at this point
Ground
In order to guarantee the device works properly it is mandatory to leave this pin floating
Load disconnection flag (open drain)
Exp-pad Internally connected to ground
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