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ST1S41 Fiches technique(PDF) 3 Page - STMicroelectronics

No de pièce ST1S41
Description  850 kHz switching frequency
PDF  27 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST1S41 Fiches technique(HTML) 3 Page - STMicroelectronics

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DocID023654 Rev 2
3/27
ST1S41
Pin settings
1
Pin settings
1.1
Pin connection
Figure 2. Pin connection (top view)
1.2
Pin description
1
45
8
VINA
EN
FB
GND
PGND
SW
VINSW
NC
EN
NC
VFQFPN
HSOP8
2
3
6
7
9
9
AM15059v1
Table 1. Pin description
N.
Type
Description
1
VINA
Unregulated DC input voltage
2EN
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 (ST1S41Ixx).
3FB
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 FB pin.
4
AGND
Ground
5
NC
Can be connected to ground
6
VINSW
Power input voltage
7
SW
Regulator output switching pin
8
PGND
Power ground
9
ePAD
Ground



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