ST1S09 STMicroelectronics, ST1S09 Datasheet - Page 4

• Manufacturer Part Number: ST1S09
• Description: Synchronous rectification with inhibit, 2 A, 1.5 MHz adjustable, step-down switching regulator
• Manufacturer: STMicroelectronics

Specifications of ST1S09

• Typical Efficiency: > 90%
• Two Versions Available: power good or inhibit
• Non Switching Quiescent Current: (typ) 1.5 mA over temperature range

Pin configuration
2
Figure 2.
Table 2.
4/18
Exposed
Pin n°
Pad
1
2
3
4
5
6
Pin configuration
Pin connections (top view)
ST1S09
Pin description
INH/PG/NC
Symbol
V
V
GND
GND
IN_SW
SW
FB
IN_A
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
Doc ID 13632 Rev 4
ST1S09A
Name and function
ST1S09I
ST1S09