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ST1S32PUR Datasheet(PDF) 3 Page - STMicroelectronics

Part # ST1S32PUR
Description  4 A DC step-down switching regulator
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST1S32PUR Datasheet(HTML) 3 Page - STMicroelectronics

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ST1S32
Pin settings
Doc ID 023246 Rev 1
3/29
1
Pin settings
1.1
Pin connection
Figure 2.
Pin connection (top view)
1.2
Pin description
Table 1.
Pin description
No.
Type
Description
1
VINA
Unregulated DC input voltage.
2EN
Enable input. With EN higher than 1.5 V the device in ON and with EN
lower than 0.5 V the device is OFF.
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 the FB pin.
4
AGND
Ground.
5PG
Open drain Power Good (POR) pin. It is released (open drain) when the
output voltage is higher than 0.92 * VOUT with a delay of 170 us. If the
output voltage is below 0.92 * VOUT, the POR pin goes to low impedance
immediately.
If not used, it can be left floating or to GND.
6
VINSW
Power input voltage.
7
SW
Regulator output switching pin.
8
PGND
Power Ground.


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