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VNF1248F Datasheet(PDF) 29 Page - STMicroelectronics

Part # VNF1248F
Description  High-side switch controller with intelligent fuse protection for 12 V, 24 V and 48 V automotive applications
PDF  79 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VNF1248F Datasheet(HTML) 29 Page - STMicroelectronics

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8
External LDO
An external power supply can be used to power the device and reduce the consumption of the VS pin in normal
mode. If the voltage VEXT_LDO > VEXT_LDO_H, the device is automatically powered by the external regulator, and
the current is supplied by the external LDO, thus reducing battery consumption. The EXT_REG_ON bit is latched
to "1". Instead, if the voltage VEXT_LDO < VEXT_LDO_L, the device is automatically powered by the internal LDO,
and the current is supplied through the VS pin.
VNF1248F
External LDO
DS14109 - Rev 7
page 29/79



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