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L9945 Datasheet(PDF) 1 Page - STMicroelectronics |
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L9945 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 144 page  Features • AEC-Q100 qualified • 12 V and 24 V battery systems compliance • 3.3 V and 5 V logic compatible I/O • 8-channel configurable MOSFET pre-driver – High-side (N-channel and P-channel MOS) – Low-side (N-channel MOS) – H-bridge (up to 2 H-bridge) – Peak & Hold (2 loads) • Operating battery supply voltage 3.8 V to 36 V • Operating VDD supply voltage 4.5 V to 5.5 V • Programmable gate charge/discharge currents for improving EMI behavior • Individual diagnosis for: – Short circuit to battery – Open load – Short circuit to ground • Highly flexible overcurrent sensing implementation – Possibility of monitoring external MOS drain to source voltage – Possibility of monitoring voltage on external shunt resistor – 64 programmable overcurrent thresholds independent for each channel – Ultra-fast output shutdown in case of overcurrent • Current limitation for H-Bridge configuration • 32-bit SPI protocol available for configuration and diagnostics – Failures latched even if they occur during diagnostics reading – Daisy chain operation – SDO protected against overvoltage • Safety features – Fast switch off redundant output disable by two external pins – Built In Self Test (BIST) for logic operation – Hardware Self Check (HWSC) for VDD5 overvoltage comparator – Configurable Communication Check (CC) watchdog timer available – Disable feedback by bi-directional pin – Highly redundant output monitoring by dedicated SPI registers • 10-bit ADC for battery and die temperature measurements available by SPI • VDD5 monitoring for over/under voltage • VPS (battery) monitoring for under voltage Product status link L9945 Product label Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems L9945 Datasheet DS12275 - Rev 10 - May 2025 For further information, contact your local STMicroelectronics sales office. www.st.com |
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