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STBP120 Datenblatt(PDF) 11 Page - STMicroelectronics

Teilenummer STBP120
Bauteilbeschribung  Overvoltage protection device with thermal shutdown
PDF  36 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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STBP120 Datenblatt(HTML) 11 Page - STMicroelectronics

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STBP120
Operation
Doc ID 15492 Rev 4
11/36
3.4
Overvoltage lockout (OVLO)
If the input voltage VIN rises above the threshold level VOVLO, the MOSFET switch is
immediately turned off (see Figure 7). At the same time, the fault indication output FLT is
activated (i.e. driven low). This device is equipped with hysteresis, VHYS(OVLO), to improve
noise immunity under transient conditions.
For available OVLO thresholds and hystereses, please see the Table 5.
3.5
Thermal shutdown
If the STBP120 internal junction temperature exceeds the TOFF threshold, internal MOSFET
switch is turned off and the fault indication output FLT is driven low.
To improve thermal stability, this circuit has a 20 °C hysteresis, THYS(OFF).



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