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Os motores de busca de Datasheet de Componentes eletrônicos |
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Os motores de busca de Datasheet de Componentes eletrônicos |
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L9912L Folha de dados(PDF) 32 Page - STMicroelectronics |
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L9912L Folha de dados(HTML) 32 Page - STMicroelectronics |
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32 / 84 page  Electrical specifications L9912L 32/84 DocID029641 Rev 2 5.3.13 Pin "L" L pin is used to drive the fault indicator lamp and the optional auxiliary load relay (lamp drive mode). Figure 11. L interface in lamp drive mode The device exits the stand-by mode when the switch "Key" (see Figure 11) is closed (i.e. V(L) > VLHTh). The lamp is driven by an internal low side N-channel MOSFET whereas the relay is driven by an internal high-side N-channel MOSFET. The current in low side driver is limited to ILlimLS for a time tLOC, then the driver is switched off and bit 2 of SPI read register 0x12 is set [13.4.6]; it can again be turned on by means of a µC command. The maximum power dissipation allowed is Pretry. The application software must wait the proper time before turning the lamp driver on again respecting the max power dissipation over a retry period. |
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