UJA1131HW: Buck/boost HS-CAN/dual LIN system basis chip
The UJA113x System Basis Chip (SBC) contains a fully integrated buck and boost converter along with a number of features commonly 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.
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. In Boost mode, the SMPS of the UJA1131 and UJA1132 variants can continue supplying a microcontroller during dips in the battery voltage, ensuring uninterrupted operation. The boost stage of the UJA1135 and the UJA1136 has limited output current capability, and is suitable for supplying the memory in a microcontroller to prevent information being lost. The SMPS requires only a single external coil and some capacitors but no separate semiconductors.
The UJA113x implements the classic CAN physical layer as defined in the current ISO11898 standard (-2:2003, -5:2007, -6:2013). Pending the release of the upcoming version of ISO11898-2:201x including CAN FD, additional timing parameters defining loop delay symmetry are included. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 2 Mbit/s.
The UJA113xFD/x variants support ISO 11898-6:2013 and ISO 11898-2:201x compliant CAN partial networking with a selective wake-up function incorporating CAN FD-passive. CAN FD-passive is a feature that allows CAN FD bus traffic to be ignored in Sleep/Standby mode. CAN FD-passive partial networking is the perfect fit for networks that support both CAN FD and classic CAN communications. It allows normal CAN controllers that do not need to communicate CAN FD messages to remain in partial networking Sleep/Standby mode during CAN FD communication without generating bus errors.
A number of configuration settings are stored in non-volatile memory. This makes it possible to adapt the power-on and limp home behavior of the UJA113x to meet the specific requirements of an application.
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| Buck/boost HS-CAN/dual LIN system basis chip (REV 2.2) PDF (1.1 MB) UJA113X_SER | 02 Sep 2016 |
Ordering Information
| Product | Status | Product category | Category | Supported standards | Package name | Low power modes | Supply voltage [min] (V) | Supply voltage [max] (V) | Data rate [min] (kb/s) | Data rate [max] (kb/s) | CAN channels | LIN channels | Voltage on bus pins [min] (V) | Voltage on bus pins [max] (V) | VESD IEC61000-4-2 (kV) | FlexRay Channels | VESD HBM on bus pins (+/- kV) | VIO option available | Application | Recommended Version | Tvj [max] (°C) | Rth(j-a) (K/W) | SPLIT pin | Under-voltage detection | TX Dominant Time out | Over-temperature detection | INH / Wake Pin | Min High Input Levels (V) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UJA1131HW/FD/5V/0 | Active | SBC; High-Speed CAN; CAN FD; LIN Transceiver | ISO-11898-2; ISO-11898-5; ISO-11898-6; SAE J2602; LIN 2.1; LIN 2.0; compatible with LIN 1.3 | Standby Mode; Sleep Mode | 2 | 40 | 15 | 2000 | 1 | 1 | -58 | 58 | 6 | 6 | No | Yes | 500mA | |||||||||||
| UJA1131HW/3V3 | Active | SBC; High-Speed CAN; CAN FD; LIN Transceiver | ISO-11898-2; ISO-11898-5; ISO-11898-6; SAE J2602; LIN 2.1; LIN 2.0; compatible with LIN 1.3 | Standby Mode; Sleep Mode | 2 | 40 | 15 | 2000 | 1 | 1 | -58 | 58 | 6 | 6 | No | Yes | 500mA | |||||||||||
| UJA1131HW/5V0 | Active | SBC; High-Speed CAN; CAN FD; LIN Transceiver | ISO-11898-2; ISO-11898-5; ISO-11898-6; SAE J2602; LIN 2.1; LIN 2.0; compatible with LIN 1.3 | Standby Mode; Sleep Mode | 2 | 40 | 15 | 2000 | 1 | 1 | -58 | 58 | 6 | 6 | No | Yes | 500mA | |||||||||||
| UJA1131HW/FD/5V/4 | Active | SBC; High-Speed CAN; CAN FD; LIN Transceiver | ISO-11898-2; ISO-11898-5; ISO-11898-6; SAE J2602; LIN 2.1; LIN 2.0; compatible with LIN 1.3 | Standby Mode; Sleep Mode | 2 | 40 | 15 | 2000 | 1 | 1 | -58 | 58 | 6 | 6 | No | Yes | 500mA | |||||||||||
| UJA1131HW/FD/3V/0 | Active | SBC; High-Speed CAN; CAN FD; LIN Transceiver | ISO-11898-2; ISO-11898-5; ISO-11898-6; SAE J2602; LIN 2.1; LIN 2.0; compatible with LIN 1.3 | Standby Mode; Sleep Mode | 2 | 40 | 15 | 2000 | 1 | 1 | -58 | 58 | 6 | 6 | No | Yes | 500mA | |||||||||||
| UJA1131HW/FD/3V/4 | Active | SBC; High-Speed CAN; CAN FD; LIN Transceiver | ISO-11898-2; ISO-11898-5; ISO-11898-6; SAE J2602; LIN 2.1; LIN 2.0; compatible with LIN 1.3 | Standby Mode; Sleep Mode | 2 | 40 | 15 | 2000 | 1 | 1 | -58 | 58 | 6 | 6 | No | Yes | 500mA |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UJA1131HW/3V3 |  | Reel 13" Q1/T1 in Drypack | Active | UJA1131HW/3V3Y (9352 946 19518) | Standard Marking | UJA1131HW/3V3 |    | Always Pb-free | 3 | 3 | ||
| UJA1131HW/5V0 | | Reel 13" Q1/T1 in Drypack | Active | UJA1131HW/5V0,518 (9352 946 13518) | Standard Marking | UJA1131HW/5V0 | | Always Pb-free | 3 | 3 | ||
| UJA1131HW/FD/3V/0 | | Reel 13" Q1/T1 in Drypack | Active | UJA1131HW/FD/3V/0Y (9353 065 21518) | Standard Marking | UJA1131HW/FD/3V/0 | | Always Pb-free | 3 | 3 | ||
| UJA1131HW/FD/3V/4 | | Reel 13" Q1/T1 in Drypack | Active | UJA1131HW/FD/3V/4Y (9353 065 19518) | Standard Marking | UJA1131HW/FD/3V/4 | | Always Pb-free | 3 | 3 | ||
| UJA1131HW/FD/5V/0 | | Reel 13" Q1/T1 in Drypack | Active | UJA1131HW/FD/5V/0Y (9353 065 17518) | Standard Marking | UJA1131HW/FD/5V/0 | | Always Pb-free | 3 | 3 | ||
| UJA1131HW/FD/5V/4 | | Reel 13" Q1/T1 in Drypack | Active | UJA1131HW/FD/5V/4Y (9353 065 16518) | Standard Marking | UJA1131HW/FD/5V/4 | | Always Pb-free | 3 | 3 |
