My Inquiry
My Account
NXP Semiconductors UJA1131AHW/3F4/0Y
- Part No.:
- UJA1131AHW/3F4/0Y
- Manufacturer:
- NXP Semiconductors
- Package:
- -
- Datasheet:
-
UJA1131AHW/3F4/0Y.pdf
- Description:
- UJA1131AHW/3F4/0Y
- Quantity:
- Payment:
- Shipping:
Inventory:1,205
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UJA1131AHW/3F4/0Y from NXP Semiconductors is an automotive System Basis Chip (SBC) integrating a buck/boost SMPS, 3.3 V/500 mA LDO (V1), 5 V/100 mA auxiliary regulator (V2), ISO 11898-2/6-compliant HS-CAN transceiver supporting up to 2 Mbit/s CAN FD data fields, and dual LIN transceivers - all in a single HTQFP48 package. It serves as the central power management and communication interface for automotive ECUs, enabling robust operation during battery dips down to 2 V via boost mode.
For engineers reviewing the UJA1131AHW/3F4/0Y datasheet, UJA1131AHW/3F4/0Y pinout, UJA1131AHW/3F4/0Y application, or UJA1131AHW/3F4/0Y equivalent, this device delivers verified CAN FD partial networking with CAN FD-passive wake-up, configurable limp-home outputs, SPI-controlled power modes, and integrated battery monitoring - critical for ECU designs requiring fail-safe behavior, low-power standby, and seamless remote flash programming over CAN.
Technical Context
The UJA1131AHW/3F4/0Y implements a fully autonomous buck/boost switched-mode power supply (SMPS) that automatically selects between Buck and Boost modes based on input voltage and load, sustaining microcontroller operation at battery voltages as low as 2 V. Its CAN transceiver complies with ISO 11898-2:201x and ISO 11898-6:2013, enabling CAN FD active communication up to 2 Mbit/s while supporting selective wake-up without false triggers from CAN FD traffic.
This variant includes dual LIN transceivers compliant with SAE J2602 and LIN 2.x, two-channel battery A/D monitoring (10-bit, ±300 mV accuracy), and four high-voltage I/Os (HVIO1–HVIO4) configurable as high-side/low-side drivers or wake-up inputs - with three dedicated limp-home outputs (static, 100 Hz/10%, and 1.25 Hz/50%).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Input Range | 2 V to 40 V battery input; supports operation during cold-crank events and deep discharge |
| V1 Output | 3.3 V ±2 %, 500 mA - powers microcontroller with transient load capability and short-circuit protection |
| V2 Output | 5 V ±2 %, 100 mA - configurable as sensor supply with loss-of-ground and short-to-battery protection |
| CAN Data Rate | Up to 2 Mbit/s in CAN FD data field; full ISO 11898-2:201x and ISO 11898-6:2013 compliance |
| LIN Channels | Dual LIN transceivers; SAE J2602 and LIN 2.x compliant with integrated slave termination |
| HVIO Count | 4 pins (HVIO1–HVIO4); individually configurable as HS/LS drivers or wake-up inputs with open-load diagnostics |
| Package | HTQFP48, 10 mm × 10 mm - thermally enhanced with exposed die pad connected to GND |
| Operating Temp | −40 °C to +150 °C ambient - qualified for under-hood automotive applications |
Pinout & Package
UJA1131AHW/3F4/0Y uses the HTQFP48 (SOT1181-2) package: 10 mm × 10 mm × 1.0 mm body with exposed thermal pad internally tied to GND. Pin count is 48; pin pitch is 0.5 mm. The exposed pad must be soldered to PCB ground for thermal performance and EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BAT | Battery supply input | Main power source for LIN transceivers and A/D converter channel 0; withstands ±40 V transients per ISO 7637-3 |
| V1 | Main regulator output | 3.3 V supply for microcontroller; active in Standby mode; shut down in Sleep mode |
| VCAN | CAN transceiver supply | 5 V dedicated supply for HS-CAN PHY; enables independent voltage domain and noise isolation |
| RXDC / TXDC | CAN data interface | Differential receive/transmit signals to microcontroller; compatible with standard CAN controllers |
| LIN1 / LIN2 | LIN bus interfaces | Two isolated LIN physical layers; support daisy-chain or star topology with internal termination |
| HVIO1–HVIO4 | High-voltage I/Os | Configurable HS/LS drivers or wake-up inputs; support limp-home signaling and cyclic contact monitoring |
| LIMP | Limp-home output | Open-drain output activated during system failure; drives external hardware into safe state |
| SCK / SDO / SDI / SCSN | SPI interface | 16-/24-/32-bit SPI for configuration, status readback, and diagnostic control |
| INTN1 / INTN2 | Interrupt outputs | INTN1 reports all interrupts; INTN2 reports only high-priority events (e.g., overtemperature, V1 UV) |
| RSTN | Reset I/O | Bidirectional reset pin referenced to V1; programmable pulse length for MCU compatibility |
Key Features
| Feature | Design Value |
|---|---|
| Buck/Boost SMPS with single coil | Enables uninterrupted microcontroller operation during battery dips to 2 V; eliminates need for external FETs or diodes |
| CAN FD-passive partial networking | Allows Sleep mode retention during CAN FD traffic - prevents bus errors from legacy CAN nodes unaware of FD frames |
| Configurable limp-home outputs | HVIO2 (static), HVIO3 (100 Hz/10%), HVIO4 (1.25 Hz/50%) - directly drive fail-safe hardware without MCU intervention |
| Dual LIN with integrated termination | Reduces BOM count and PCB area; eliminates external LIN bus resistors and improves EMC emission profile |
| Two-channel battery A/D monitoring | 10-bit resolution with ±300 mV accuracy at 20 V full scale; measures both BAT and BATSENSE for polarity protection diagnostics |
| Non-volatile configuration memory | Stores power-on behavior, limp-home settings, and wake-up thresholds - enables application-specific adaptation without firmware update |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) |
|---|---|
Use Scenario: Centralized power and communication hub managing lighting, door locks, and climate actuators via LIN subnetworks and CAN backbone. IC Role / Device Role / Timing Role: UJA1131AHW/3F4/0Y supplies 3.3 V to MCU, regulates sensor power via V2, handles CAN/LIN protocol translation, and executes limp-home signaling on HVIOs during fault conditions. Use Value: Eliminates discrete DC-DC, CAN transceiver, and LIN transceiver ICs; reduces board space by >35% and enables cold-crank operation below 4 V. | Use Scenario: Powering engine management MCU during cranking, where battery voltage drops to 2–3 V for extended periods. IC Role / Device Role / Timing Role: UJA1131AHW/3F4/0Y operates in Boost mode to sustain V1 at 3.3 V, monitors battery health via dual A/D channels, and provides CAN FD communication for real-time torque mapping updates. Use Value: Guarantees deterministic MCU operation during start-stop cycles; avoids brownout resets and preserves calibration data in volatile memory. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Electric Power Steering (EPS) Module |
Use Scenario: Aggregating radar, camera, and ultrasonic sensor data over dual LIN buses while communicating fused results via CAN FD to domain controller. IC Role / Device Role / Timing Role: UJA1131AHW/3F4/0Y supplies isolated 5 V to sensors via V2, manages LIN timing with integrated slave termination, and enables selective wake-up from CAN FD traffic without interrupting sensor sampling. Use Value: Reduces system-level EMI through optimized LIN curve shaping and eliminates false wake-ups - extending sleep current to <25 µA. | Use Scenario: Controlling motor phase drivers and torque sensors in safety-critical EPS systems requiring ASIL-B compliance and fail-operational behavior. IC Role / Device Role / Timing Role: UJA1131AHW/3F4/0Y configures HVIOs as static and pulsed limp-home outputs, monitors battery voltage for undervoltage lockout, and delivers watchdog supervision with windowed timeout mode. Use Value: Provides hardware-enforced safe states (e.g., centering assist torque) during MCU failure - meeting ISO 26262 requirements without external safety monitor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar System Basis Chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UJA1132HW/3V3 | Same buck/boost SMPS, dual LIN, 4 HVIOs, but includes high-current boost stage (supports full MCU supply down to 2 V); no CAN FD-passive feature | Preferred for applications requiring higher boost output current (>200 mA) but not needing CAN FD partial networking | Select when boost load exceeds 150 mA and CAN FD wake-up filtering is unnecessary |
| TLE9471-3ES | Infineon SBC with 3.3 V/500 mA LDO, CAN FD transceiver, single LIN, 4 HVIOs; lacks dual LIN and CAN FD-passive mode | Used in cost-sensitive body electronics where one LIN channel suffices and CAN FD traffic volume is low | Choose when footprint compatibility with TLE9471-3ES is required and dual LIN is not needed |
Compared with UJA1131AHW/3F4/0Y, UJA1132HW/3V3 offers stronger boost capability but omits CAN FD-passive wake-up, while TLE9471-3ES provides comparable safety features and thermal performance but requires external LIN termination and lacks dual-LIN integration - making UJA1131AHW/3F4/0Y optimal for CAN FD–enabled multi-LIN architectures demanding minimal BOM and fail-safe autonomy.
Availability
UJA1131AHW/3F4/0Y is available at Aetrix Electronics and suitable for automotive Body Control Modules, Engine Control Units, ADAS sensor hubs, and Electric Power Steering modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for UJA1131AHW/3F4/0Y includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive-grade power management and communication ICs.
The UJA113x product line was designed specifically for next-generation automotive Electronic Control Units, integrating power regulation, CAN/LIN physical layers, and fail-safe control logic into a single AEC-Q100 qualified device to reduce system complexity and improve functional safety.
FAQ
What is the maximum CAN FD data rate supported by the UJA1131AHW/3F4/0Y?
The UJA1131AHW/3F4/0Y supports CAN FD active communication up to 2 Mbit/s in the data field, compliant with ISO 11898-2:201x and ISO 11898-6:2013. Its transceiver implements loop delay symmetry parameters required for reliable fast-phase operation, and its CAN FD-passive feature ensures Sleep mode integrity during background FD traffic - a key differentiator for mixed CAN/CAN FD networks.
Does the UJA1131AHW/3F4/0Y support dual LIN communication simultaneously?
Yes, the UJA1131AHW/3F4/0Y integrates two fully independent LIN transceivers compliant with SAE J2602 and LIN 2.x standards. Both LIN1 and LIN2 channels operate concurrently with integrated slave termination, eliminating external resistors. The device supports downward compatibility with LIN 1.3 and features optimized curve shaping to meet stringent automotive EMC emission requirements.
How does the buck/boost SMPS in the UJA1131AHW/3F4/0Y behave during battery voltage dips?
The UJA1131AHW/3F4/0Y's SMPS automatically switches to Boost mode when input voltage falls below the regulated output level, sustaining V1 at 3.3 V even during cold-crank events down to 2 V. It requires only one external coil and capacitors - no external semiconductors - and includes soft-start and pass-through mode for lowest quiescent current. This ensures uninterrupted MCU operation without brownout resets.
Can the UJA1131AHW/3F4/0Y's HVIO pins be used for both driving loads and wake-up detection?
Yes, each of the four HVIO pins (HVIO1–HVIO4) in the UJA1131AHW/3F4/0Y is individually configurable via SPI as either a high-side driver, low-side driver, or wake-up input. Wake-up threshold is selectable (ratiometric or absolute), tolerates ground offsets up to 2.5 V, and supports edge-triggered reporting via SPI - enabling flexible use in contact monitoring, LED control, and fault-triggered entry from Sleep mode.
What non-volatile memory functions are implemented in the UJA1131AHW/3F4/0Y?
The UJA1131AHW/3F4/0Y stores configuration data in on-chip non-volatile memory, including power-on behavior, limp-home output definitions (e.g., HVIO3 as 100 Hz signal), wake-up thresholds, and Sleep mode enable/disable state. This allows application-specific adaptation without MCU firmware changes and retains settings across power cycles - critical for field-programmable ECU behavior and calibration consistency.
UJA1131AHW/3F4/0Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
UJA1131AHW/3F4/0Y FAQ
1.How can I place an order for UJA1131AHW/3F4/0Y through Aetrix?
Please submit a Request for Quotation (RFQ) for UJA1131AHW/3F4/0Y on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for UJA1131AHW/3F4/0Y reliable?
The price and inventory of UJA1131AHW/3F4/0Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UJA1131AHW/3F4/0Y is usually 5 days.
3.What payment methods are accepted for UJA1131AHW/3F4/0Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UJA1131AHW/3F4/0Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UJA1131AHW/3F4/0Y?
UJA1131AHW/3F4/0Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UJA1131AHW/3F4/0Y order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for UJA1131AHW/3F4/0Y?
For technical support, including UJA1131AHW/3F4/0Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UJA1131AHW/3F4/0Y requirements.
6.How does Aetrix verify that UJA1131AHW/3F4/0Y is sourced from the original manufacturer or authorized distributors?
All UJA1131AHW/3F4/0Y products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that UJA1131AHW/3F4/0Y meets industry standards.
7.What is the process for return or replacement of UJA1131AHW/3F4/0Y?
All UJA1131AHW/3F4/0Y units undergo pre-shipment inspection (PSI). If there is an issue with UJA1131AHW/3F4/0Y, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The UJA1131AHW/3F4/0Y part is unused and in its original packaging.
Return procedure for UJA1131AHW/3F4/0Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UJA1131AHW/3F4/0Y Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
