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UM1557 Datasheet(PDF) 46 Page - STMicroelectronics

Part # UM1557
Description  The aim of this document is to give the design engineer
PDF  111 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM1557 Datasheet(HTML) 46 Page - STMicroelectronics

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Switching inductive loads
UM1557
46/111
Doc ID 023521 Rev 2
In order to protect the freewheeling diode against the reverse battery condition there is an
additional diode (Dr) required in series with the output. This circuitry is suitable only for small
loads due the permanent voltage drop (
 power dissipation) on Dr during normal operation.



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