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L9965P Datasheet(PDF) 88 Page - STMicroelectronics |
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L9965P Datasheet(HTML) 88 Page - STMicroelectronics |
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88 / 104 page  4.1.4 24 V DC-DC with MCU and ERBST not mounted The Figure 32 shows a typical application diagram for a pyro-fuse system not using the ERBST regulator and interfaced with a generic MCU. Figure 32. Application circuit: 24 V DC-DC with MCU and ERBST not mounted Arming logic Deployment driver 3V3 int regulator ER boost regulator ER discharge switch Global configuration and control, ADC, bias and diagnostics 5V or 3.3V PS FAULTN CWUP NCS SCLK SDI/MOSI SDO/MISO Power management, diagnostics and monitoring CIN PF PR PYRO FUSE VIO PGND RFAULTN CVIO CPF CPR MCU CFAULTN 24V DC-DC + - DIN MCU PMIC CER1 CER2 The ERBST regulator is kept disabled and its components are not mounted. The diode DIN is optional and is used to avoid back feeding to the DC-DC regulator. Note: See the dedicated Application Note. L9965P Application scenarios DS14702 - Rev 4 page 88/104 |
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