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STBP112-ATDJ6F Folha de dados(PDF) 8 Page - STMicroelectronics

Nome de Peças STBP112-ATDJ6F
Descrição Electrónicos  Overvoltage protection device
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STBP112-ATDJ6F Folha de dados(HTML) 8 Page - STMicroelectronics

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Pin description
STBP112
8/38
Doc ID 023357 Rev 3
The EN input is equipped with an internal pull-down resistor of 250 k
Ω (typical value). If
there is no need to use this input, it may be left floating or, preferably, connected to GND.
For VIN lower than 2.5 V (max.), the pull-down resistor is internally disconnected to lower the
EN pin input current in case the external AC adapter is not connected, the application is
running from an internal battery and the STBP112 device is disabled.
To improve safety and to prevent damage to application circuits in the event of extreme
voltage or current conditions, an optional protective resistor REN can be connected between
the EN input and the controller output (see Figure 4). The protective resistor forms a voltage
divider with the internal pull-down resistor, which limits the maximum possible REN value
with respect to the VIH(EN) threshold of EN input and the controller’s output voltage for logic
high, VOH. For the worst case, the highest protective resistor value is
RENmax = RPD(EN)min x (VOH / VIH(EN) - 1),
where RPD(EN)min is 100 kΩ and VIH(EN) is 1.2 V.
For most cases, an REN value of 10 kΩ to 100 kΩ is adequate.
The FLT output is in Hi-Z state when the device is disabled by EN input.
2.5
No connect (NC)
Pin 3, 6, and 7 are no connect (NC). They may be left floating or connected to GND.
2.6
Ground (GND)
Ground terminal. All voltages are referenced to GND. The exposed thermal pad is internally
connected to GND.
Table 1.
Pin description and signal names
Pin
Name
Type
Function
1
IN
Input/supply
Input voltage
2
GND
Supply
Ground
3, 6, 7
NC
-
Not connected
4FLT
Output
Fault indication output (open-drain)
5EN
Input
Enable input (pull-down resistor to GND)
8
OUT
Output
Output voltage


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