UJA1131HW/3V3Y

The UJA1131HW/3V3Y is a buck/boost HS-CAN/ LIN system basis chip in 48 pin HTQFP package. The UJA1131HW/3V3Y System Basis Chip (SBC) contains buck/high-current boost SMPS, 3.3V 500mA low-drop voltage regulator, 5V 100mA auxiliary voltage regulator, CAN FD transceiver up to 2Mbit/s, 1 x LIN transceivers, 8 x high-voltage I/Os, 4 x timers for HVIO control, A/D converter for monitoring the battery voltage, watchdog timer, LIMP pin, advanced LIMP function, SPI interface, reset output, EN pin for controlling critical hardware, mode control such as normal, standby, sleep and overtemperature warning and shutdown. To satisfy the demand for SBCs that operate at low battery supply voltages and feature low power dissipation, a SMPS with automatic down (buck mode) or up conversion (boost mode) has been integrated into IC. In boost mode, the SMPS of the UJA1131 can continue supplying a microcontroller during dips in the battery voltage ensuring uninterrupted operation.

• Fully integrated buck-boost converter
• Separate voltage regulator with optional protection against shorts to battery, loss of module ground
• Watchdog with window and timeout modes and on-chip oscillator
• Serial peripheral interface (SPI) for communicating with the microcontroller
• ECU power management system
• Protected general-purpose HVIO pins configurable as high-side, low-side drivers or wake-up inputs
• Four internal PWM/pulse timers in derivatives containing high voltage I/O pins
• 6KV ESD protection according to HBM on the CAN/LIN bus pins
• Very low current standby and sleep modes with full wake-up capability
• Operating temperature range from -40°C to +125°C

Aplicaţii

Communications & Networking, Automotive