STMicroelectronics L9349-LF
The L9349 is a monolithic IC designed to drive inductive loads in low side configurations like hydraulic valves used in ABS systems. The internal pull down current source at the ENable and INput pins assures, that the device is switched off, in case of open input conditions.- Min Voltage : 4.5V
- Max Voltage : 32V
- Channels : 4
- Max Operating Temp : 150°C
- Min Operating Temp : -40°C
Source:
Octopart
| Part No. | L9349-LF |
|---|---|
| Datasheet | L9349-LF Download |
| Manufacturer |  STMicroelectronics |
| Description | Quad intelligent power low side switch |
| Buy | Stock & Price |
DESCRIPTION
Particular care has been taken to protect the device against failures, to avoid electromagnetic interferences and to offer extensive real time diagnostics. An output voltage slope limitation is implemented to reduce the EMI. PowerSO-20 The device is equipped with an integrated Zener diodes clamp for fast inductive load current recirculation. This structure limits the output voltage during the recirculation phase to 50V. The device is self-protected against short circuit at the outputs and overtemperature. For the real time error diagnosis, the voltage and the current of the outputs are compared with internally fixed thresholds to recognize open load in OFF and ON conditions. The output voltages are also compared with each other in OFF condition with a fixed offset, in order to recognize load bypasses. If the over load current threshold is exceeded, the output current will be limited internally during the diagnostic overload delay switch-off time. All four channels are monitored with a status output.
