ST1S09 データシートの表示（PDF） - STMicroelectronics

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ST1S09

2 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification

STMicroelectronics 

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

VIN_SW

5

VIN_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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Doc ID 13632 Rev 4

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