UJA1131A
description
The UJA113x A System Basis Chip (SBC) contains a fully integrated buck and boost converter along with a number of features monly found in the latest generation of automotive Electronic Control Units (ECUs). It interfaces directly with CAN and LIN bus lines, supplies the microcontroller, handles input and output signals and supports fail-safe features including a watchdog and advanced ‘limp home’ functionality configurable via non-volatile memory. The UJA113x A is available in number of variants as detailed in Section 3.
To satisfy the demand for SBCs that operate at low battery supply voltages and feature low power dissipation, a switched mode power supply (SMPS) with automatic down (Buck mode) or up conversion (Boost mode) has been integrated into the UJA113x A. In Boost mode, the SMPS of the UJA1131A and UJA1132A variants can continue supplying a microcontroller during dips in the battery voltage, ensuring uninterrupted operation. The boost stage of the UJA1135A and the...
