The 33742 and the 33742S are monolithic integrated circuits combining many functions frequently used by automotive environmental control units (ECUs). The 33742 is an SBC having a fully protected fixed 5.0 V low-drop regulator with current limit, overtemperature pre-warning, and reset. An output drive with sense input is also provided to implement a second 5.0 V regulator, using an external PNP bipolar junction transistor. The 33742 has normal, standby, stop, and sleep modes, an internally switched high-side power supply output with four wake-up inputs, programmable window watchdog, interrupt, reset, SPI input control, and a high-speed CAN transceiver compatible with CAN 2.0 A and B protocols for module-to-module communication.

Features

High-Speed 1.0 Mbps CAN Interface with Bus Diagnostic Capability(Detection of CANH and CANL Short to Ground, to VDD, and to VSUP)

Low-Drop Voltage 5.0 V, 200 mA VDD Regulator with Current-Limiting, Overtemperature Pre-Warning, and Output Monitoring with Reset

Additional 5.0 V Regulator with External Series Pass Transistor

Normal, Standby, Stop, and Sleep Modes with Low Sleep and Stop Mode Current

150 mA High-Side Switch Output for Control of External Circuitry

Four External Wake-Up Inputs

Software-Programmable Watchdog Window, Interrupt, and Reset