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STBP120 Datenblatt(PDF) 8 Page - STMicroelectronics |
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STBP120 Datenblatt(HTML) 8 Page - STMicroelectronics |
8 / 36 page Pin descriptions STBP120 8/36 Doc ID 15492 Rev 4 2.4 Enable input (EN) This logical input (active-low) can be used to enable or disable the device. When EN input is driven high, the STBP120 enters the standby mode and the power output is disconnected from the input. When EN input is driven low and all operating conditions are within specified limits, the power output is connected to the input. Since the EN input has no internal pull-down resistor, its logical level must be defined by the controller or by an external resistor. If there is no need to use this input, it should be connected to the GND. 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. The suitable resistor value is in range of 22 k Ω to 100 k Ω. The EN input level has no impact on the functionality of FLT output (see Figure 8 and Figure 9). 2.5 No Connect (NC) Pins 1, 8, 9 and exposed pads PAD1, PAD2 are No Connect. Pin 1 and exposed pads PAD1, PAD2 may be tied to IN or GND if necessary. 2.6 Ground (GND) Ground. All voltages are referenced to GND. Table 1. Pin description and signal names Pin Name Type Function 1, PAD1, PAD2 NC — No Connect. May be tied to IN or GND. 2 GND Supply Ground 3FLT Output Fault indication output (open-drain) 4, 5 IN Input / supply Input voltage 6, 7 OUT Output Output voltage 8, 9 NC — No Connect 10 EN Input Enable input (no internal pull-down resistor) |
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Ähnliche Beschreibung - STBP120 |
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