The MC33385 is a Quad Low Side Driver fully protected switch. This
device is a general purpose Low Side Driver but has been especially
designed to operate in engine management application as injector
driver or automotive gear box. It is interfaced directly with a
microcontroller for parallel control of the load and the individual output
diagnostic is done through a SPI. The diagnostic logic recognizes 4
failure types at each output stage the overcurrent, the short to GND, the
openload and the over-temperature.
Features
- RDSON of 250mOhm per Output at 25 deg C
- Supplied from the main 5V Vcc
- Input CMOS Compatible
- Diagnostic through SPI
- Nominal Current of 2A per Output
- Current Limitation at 3A with Automatic Turn Off
- Output Internally Clamped at 50V typ for Inductive Load Drive
- Junction to Case Thermal Resistance of 4.4 deg C/W
- Individual Output over Temperature Shutdown
Product Specifications
| Power Output Load - Current - Typ (A)(IL) | 2 |
| Power Output Load - Number of Channels | 4 |
| Power Output Load - Drain-to-Source On Resistance - Typ (Ohm)(RDS(ON)) | 0.25 |
| Power Output Load - Current Limit per Output - Min (A)(ILIM) | 3 |
| Load Supply Voltage - Min (V) | 0 |
| Load Supply Voltage - Max (V) | 45 |
| Supply Voltage - Min (V) | 4.5 |
| Supply Voltage - Max (V) | 5.5 |
| Interface and Input Control | Parallel |
| Ambient Operating Temperature (Ta) - Min (°C) | -40 |
| Ambient Operating Temperature (Ta) - Max (°C) | 125 |
