The MC33291 is an eight output low side power switch with 8 bit serial
input control. The MC33291 is a versatile circuit designed for automotive
applications, but is well suited for other environments. The MC33291
incorporates SMARTMOS technology, with CMOS logic, bipolar/MOS
analog circuitry, and DMOS power MOSFETs. The MC33291 interfaces
directly with a microcontroller to control various inductive or incandescent
loads.
Features
Designed to Operate Over Wide Supply Voltages of 5.5 to 26.5 V Interfaces Directly with Microprocessor Using 8 Bit SPI I/O Protocol to 3.0 MHz 1.0 A Peak Current Outputs with Maximum RDS(on) of 1.2 Ohm at Tj = 150 deg C Outputs Current Limited to 1.0 to 3.0 A for Switching Incandescent Loads Output Voltages Clamped to 53 V During Inductive Switching Maximum Sleep Current (I PWR ) of 25 mA with Reset Low Maximum of 4.0 mA I DD During Operation Maximum of 2.0 mA I PWR During Operation with All Outputs ON Open Load Detection (Outputs OFF) Overvoltage Detection and Shutdown L>
Product Specifications
| Power Output Load - Current - Typ (A)(IL) | 0.5 |
| Power Output Load - Number of Channels | 8 |
| Power Output Load - Drain-to-Source On Resistance - Typ (Ohm)(RDS(ON)) | 0.6 |
| Power Output Load - Current Limit per Output - Min (A)(ILIM) | 1 |
| Load Supply Voltage - Min (V) | 0 |
| Load Supply Voltage - Max (V) | 53 |
| Supply Voltage - Min (V) | 5.5 |
| Supply Voltage - Max (V) | 26.5 |
| Interface and Input Control | SPI |
| Ambient Operating Temperature (Ta) - Min (°C) | -40 |
| Ambient Operating Temperature (Ta) - Max (°C) | 125 |
