Datasheet

Pin configuration ST1S09
4/18 Doc ID 13632 Rev 4
2 Pin configuration
Figure 2. Pin connections (top view)
ST1S09A
ST1S09I
ST1S09
Table 2. Pin description
Pin n° Symbol Name and function
1 FB Feedback voltage
2 GND System ground
3 SW Switching pin
4V
IN_SW
Power supply for the MOSFET switch
5V
IN_A
Power supply for analog circuit
6 INH/PG/NC Inhibit (to turn off the device) / Power Good / Not Connected
Exposed
Pad
GND
To be connected to PCB ground plane for optimal electrical and thermal
performance