The L9903 is a power MOS driver produced by ST. It supports the ISO 9141 interface and has overvoltage, undervoltage, short circuit, and thermal protection functions. It can be used in automotive electronics and other fields.
The L9903 is a motor bridge controller designed for automotive applications with an ISO 9141 bus interface. It controls power MOS bridge drivers and includes features such as overvoltage, undervoltage, short circuit, and thermal protection. The device supports PWM operation frequencies up to 30kHz and includes a charge pump for driving power MOSFETs.
| Operating Supply Voltage | 8V to 20V |
|---|---|
| Overvoltage Max | 40V |
| Quiescent Current in Standby | Less than 50uA |
| PWM Operation Frequency | Up to 30kHz |
| Operating Junction Temperature | -40 to 150 °C |
| Bootstrap Voltage | -0.3 to 40 V |
The operating supply voltage ranges from 8V to 20V, or 6V with an implemented step-up converter.
Yes, it features an ISO 9141 compatible interface for automotive applications.
The device includes overvoltage, undervoltage, short circuit, and thermal protection.