The L9825 is an octal low-side driver circuit designed for automotive applications. It features output voltage clamping, overcurrent shutdown, short circuit current limitation, and selective thermal shutdown.
The L9825 is an integrated circuit designed as an octal low-side driver for resistive and inductive loads, specifically dedicated for automotive applications. It features 8 power outputs controlled via a Serial Peripheral Interface (SPI) protocol, with outputs 1 and 2 also supporting parallel control inputs. The device includes intrinsic output voltage clamping for flyback current recirculation and provides diagnostic data transfer via the SPI interface.
| Output current (Out7, Out8) | 1.75 A |
|---|---|
| Output clamp voltage | 45 to 60 V |
| On resistance | 1.5 mOhm |
| Thermal shutdown threshold | 150 to 165 °C |
| Operating temperature range | -40 to 150 °C |
Outputs 7 and 8 feature short circuit current limitation and selective thermal shutdown.
The device is selected with a low NCS (Chip Select) signal.