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ST1S40IPUR Datasheet(PDF) 3 Page - STMicroelectronics

No. de pieza ST1S40IPUR
Descripción Electrónicos  3 A DC step-down switching regulator
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
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ST1S40IPUR Datasheet(HTML) 3 Page - STMicroelectronics

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ST1S40
Pin settings
Doc ID 17928 Rev 4
3/30
1
Pin settings
1.1
Pin connection
1.2
Pin description
Figure 2.
Pin connection (top view)
8
6
4
7
3
2
5
1
VINA
EN
FB
GND
PGND
SW
VINSW
NC
8
45
1
VINA
EN
FB
GND
PGND
SW
VINSW
AGND
VFQFPN
8
6
4
7
3
2
5
1
VINA
EN
FB
GND
PGND
SW
VINSW
NC
HSOP8SO8-BW
9
9
Table 1.
Pin description
No.
Type
Description
VFQFPN
and HSOP8
S08-BW
13
VINA Unregulated DC input voltage
24
EN
Enable input. With EN higher than 1.2 V the device in ON and with EN lower than
0.4 V the device is OFF (ST1S40Ixx).
35
FB
Feedback input. Connecting the output voltage directly to this pin the output
voltage is regulated at 0.8 V. To have higher regulated voltages an external
resistor divider is required from Vout to the FB pin.
4
6
AGND Ground
5
-
NC
It can be connected to ground
6
8
VINSW Power input voltage
7
1
SW
Regulator output switching pin
8
2
PGND Power ground
-
7
Ground
9
-
ePad
Exposed pad mandatory connected to ground


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