ST1S09_08 Datasheet, PDF (4/18 Pages) STMicroelectronics – 2 A, 1.5 MHz PWM step-down switching regulator with synchronous rectificationtm

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