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NXP Semiconductors UJA1132AHW/3F4/0Y
- Part No.:
- UJA1132AHW/3F4/0Y
- Manufacturer:
- NXP Semiconductors
- Package:
- 48-TQFP Exposed Pad
- Datasheet:
-
UJA1132AHW/3F4/0Y.pdf
- Description:
- UJA1132AHW/3F4/0Y
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
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Product details
Overview
UJA1132AHW/3F4/0Y from NXP Semiconductors is a System Basis Chip (SBC) for automotive ECUs, integrating a buck/boost SMPS, 3.3 V/500 mA LDO (V1), 5 V/100 mA auxiliary regulator (V2), ISO 11898-2:2016 HS-CAN FD transceiver (up to 5 Mbit/s), dual LIN transceivers, four configurable HVIOs, and battery monitoring with 10-bit ADC. It enables fail-safe operation in 12 V vehicle systems with limp-home functionality and CAN partial networking support.
For engineers reviewing the UJA1132AHW/3F4/0Y datasheet, UJA1132AHW/3F4/0Y pinout, UJA1132AHW/3F4/0Y application, or UJA1132AHW/3F4/0Y equivalent, key selection considerations include its 3.3 V V1 regulator output, CAN FD-passive selective wake-up capability, HTQFP48 package, integrated SMPS with boost-down to 2 V, and dual-LIN + HS-CAN bus interface for body control modules and gateway ECUs.
Technical Context
The UJA1132AHW/3F4/0Y implements a fully autonomous buck/boost switched-mode power supply (SMPS) that automatically selects mode based on input voltage and load - sustaining microcontroller supply down to 2 V battery input in Boost mode. Its CAN transceiver complies with ISO 11898-2:2016 and supports CAN FD active communication at up to 5 Mbit/s, plus CAN FD-passive partial networking with selective wake-up at bit rates from 50 kbit/s to 1 Mbit/s.
This variant includes two LIN transceivers compliant with LIN 2.x, ISO 17987-4:2016, and SAE J2602, and features 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 %). All configuration settings are stored in non-volatile memory for application-specific power-on and fault-response behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| V1 Output | 3.3 V ±2 %, 500 mA - powers microcontroller directly; supports 500 mA transient load jump in Standby mode. |
| SMPS Mode | Buck/Boost auto-select - maintains regulated output during battery dips to 2 V; requires only one external coil. |
| CAN Data Rate | Up to 5 Mbit/s in CAN FD fast phase - full ISO 11898-2:2016 compliance including autonomous bus biasing. |
| CAN Partial Networking | ISO 11898-2:2016 compliant with CAN FD-passive - ignores CAN FD traffic in Sleep/Standby, preventing false wake-ups. |
| LIN Channels | Dual LIN (LIN1 & LIN2) - supports LIN 2.x, ISO 17987-4:2016, and SAE J2602; downward compatible with LIN 1.3. |
| HVIO Count | 4 pins (HVIO1–HVIO4) - individually configurable as HS/LS drivers or wake-up inputs; three support limp-home signals. |
| ADC Resolution | 10-bit, ±300 mV accuracy at 20 V FS - monitors BAT/BATSENSE with continuous dual-channel sampling. |
| Package | HTQFP48 (10 mm × 10 mm, exposed die pad) - thermally enhanced RoHS-compliant package with low thermal resistance. |
Pinout & Package
UJA1132AHW/3F4/0Y uses the HTQFP48 package (SOT1181-2), 10 mm × 10 mm × 1.0 mm with exposed die pad internally connected to GND. Pin count: 48. Thermal performance optimized for automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BAT | Battery supply input | Main 12 V source for LIN transceivers and ADC channel 0; protected per ISO 7637-3. |
| V1 | Main regulator output | 3.3 V ±2 %, 500 mA supply for microcontroller; turned off in Sleep mode. |
| VCAN | CAN transceiver supply | 5 V dedicated supply for HS-CAN PHY; decoupled separately for EMC robustness. |
| CANH / CANL | CAN bus differential pair | ISO 11898-2:2016 compliant; ±40 V short-circuit proof; floating when BAT is off. |
| LIN1 / LIN2 | LIN bus interfaces | Dual 12 V LIN physical layers; integrated termination; ESD-protected per IEC 61000-4-2. |
| HVIO1–HVIO4 | High-voltage I/Os | Configurable HS/LS drivers or wake-up inputs; support open-load/short-circuit diagnostics and limp-home timing. |
| RSTN | Reset I/O | Bidirectional reset pin referenced to V1; programmable pulse length for MCU compatibility. |
| SCK / SDI / SDO / SCSN | SPI interface | 16-/24-/32-bit SPI for configuration, diagnostics, and non-volatile memory access. |
| LIMP | Limp-home output | Active-low signal enabling hardware-level fail-safe response; driven by HVIO2/3/4 logic. |
| INTN1 / INTN2 | Interrupt outputs | INTN1: all interrupts; INTN2: high-priority only (e.g., overtemperature, V1 UV); configurable masking. |
Key Features
| Feature | Design Value |
|---|---|
| Buck/Boost SMPS with single coil | Enables uninterrupted MCU operation during battery dips to 2 V; eliminates need for external FETs or controllers. |
| CAN FD-passive partial networking | Allows classic CAN nodes to remain asleep during CAN FD traffic - no bus errors, no firmware changes required. |
| Dual LIN transceivers with integrated termination | Reduces BOM count and PCB area; eliminates external LIN resistors while maintaining SAE J2602 compliance. |
| Four configurable HVIOs with limp-home support | Provides direct control of lamps, relays, or sensors; three preconfigured limp-home waveforms simplify safety-critical design. |
| Non-volatile configuration memory | Stores wake-up thresholds, limp-home behavior, and power-on defaults - eliminates boot-time SPI initialization. |
| 10-bit dual-channel battery monitor ADC | Measures both sides of polarity protection diode; enables precise undervoltage/overvoltage shutdown without external components. |
Applications
| Body Control Module (BCM) | Door Module ECU |
|---|---|
|
Use Scenario: Centralized control of lighting, windows, locks, and mirrors in modern vehicles. IC Role / Device Role / Timing Role: Primary SBC providing regulated power, CAN FD gateway, dual-LIN peripheral control, and HVIO-driven actuator interfaces. Use Value: Single-chip integration reduces system cost and board space; CAN FD-passive ensures seamless coexistence with legacy CAN nodes during software updates. |
Use Scenario: Smart door module managing window lift, mirror fold, and intrusion detection. IC Role / Device Role / Timing Role: Power management and communication hub - supplies MCU via V1, interfaces to LIN sensors (rain/light), and drives motors via HVIOs. Use Value: Boost-mode SMPS sustains operation during engine cranking (battery dip to ~6 V); limp-home outputs retain basic function after critical failure. |
| Gateway ECU | Seat Control Module |
|
Use Scenario: In-vehicle network bridge between high-speed CAN FD domains and low-speed LIN subsystems. IC Role / Device Role / Timing Role: Dual-bus interface IC with isolated CAN/LIN physical layers, SPI-configurable routing, and diagnostic reporting. Use Value: Selective wake-up prevents spurious activation from CAN FD frames - extends sleep current below 30 µA while maintaining full wake capability. |
Use Scenario: Motorized seat adjustment with position sensing, heating, and memory recall. IC Role / Device Role / Timing Role: Power supervisor and actuator driver - V2 supplies seat sensors, HVIOs drive H-bridge enable lines, ADC monitors battery health. Use Value: On-resistance <24 Ω per HVIO enables direct motor control; short-circuit diagnostics prevent latch-up during jam conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXPI UJA1132AHW/5F4 | 5 V V1 regulator instead of 3.3 V; identical SMPS, CAN FD, dual-LIN, HVIO, and package. | Used where MCU requires 5 V supply; not drop-in for 3.3 V MCUs without level-shifting or redesign. | Select UJA1132AHW/5F4 only if target MCU is 5 V–tolerant and system does not require 3.3 V regulation. |
| NXPI UJA1131AHW/3F4 | Lacks dual-LIN support - only one LIN transceiver; otherwise matches V1, SMPS, CAN FD, HVIO count, and package. | Suitable for simpler nodes (e.g., HVAC actuators) where second LIN channel is unnecessary. | Choose UJA1131AHW/3F4 to reduce cost and complexity when dual-LIN is unused; verify LIN topology compatibility. |
Compared with UJA1132AHW/5F4 and UJA1131AHW/3F4, the UJA1132AHW/3F4/0Y uniquely combines 3.3 V microcontroller supply, dual-LIN capability, and CAN FD-passive partial networking - making it optimal for next-generation body domain controllers requiring mixed-voltage MCU support and scalable LIN expansion.
Availability
UJA1132AHW/3F4/0Y is available at Aetrix Electronics and suitable for automotive body control modules, door ECUs, gateway units, and seat control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for UJA1132AHW/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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive electronics and functional safety.
The UJA113xA series is designed specifically for automotive Electronic Control Units requiring integrated power management, robust CAN FD and LIN communication, and fail-safe system control - targeting ASIL-B–capable architectures in body, chassis, and gateway domains.
FAQ
What is the primary function of the UJA1132AHW/3F4/0Y in an automotive ECU?
The UJA1132AHW/3F4/0Y serves as a System Basis Chip (SBC) that integrates power regulation (3.3 V/500 mA V1 LDO + buck/boost SMPS), HS-CAN FD and dual-LIN physical layers, four configurable HVIOs, battery monitoring, and fail-safe features like watchdog and limp-home. It replaces discrete power, interface, and supervision components in automotive ECUs - reducing BOM count and improving reliability. The UJA1132AHW/3F4/0Y is especially suited for body control and gateway applications demanding low-voltage resilience and partial networking.
Does the UJA1132AHW/3F4/0Y support CAN FD communication at full speed?
Yes, the UJA1132AHW/3F4/0Y implements a fully ISO 11898-2:2016–compliant HS-CAN transceiver supporting active CAN FD communication at data rates up to 5 Mbit/s in the fast phase. It also features CAN FD-passive partial networking, allowing selective wake-up without misinterpreting CAN FD frames - a critical capability for mixed CAN FD/classic CAN networks. This functionality is confirmed for the UJA1132AHW/3F4/0Y variant per Section 2.4 and Figure 2 of the datasheet.
What are the key differences between UJA1132AHW/3F4/0Y and UJA1132AHW/5F4?
The core difference is the main regulator output voltage: UJA1132AHW/3F4/0Y delivers 3.3 V ±2 % at 500 mA (V1), while UJA1132AHW/5F4 delivers 5 V ±2 % at 500 mA. All other features - buck/boost SMPS, dual-LIN, CAN FD-passive, four HVIOs, HTQFP48 package, and non-volatile configuration - are identical. The UJA1132AHW/3F4/0Y is selected when interfacing with 3.3 V microcontrollers; using UJA1132AHW/5F4 in such systems would require external level-shifting or regulator modification.
Can the UJA1132AHW/3F4/0Y operate with battery voltages below 6 V?
Yes - the integrated buck/boost SMPS enables the UJA1132AHW/3F4/0Y to sustain operation down to 2 V battery input in Boost mode, ensuring uninterrupted microcontroller supply during cranking events or deep discharge. This is explicitly specified for UJA1132A variants in Section 2.2 and Table 1. The SMPS automatically switches between Buck and Boost based on load and input conditions, requiring only one external coil and capacitors - no additional semiconductors needed.
How many LIN transceivers does the UJA1132AHW/3F4/0Y integrate?
The UJA1132AHW/3F4/0Y integrates two fully compliant LIN transceivers (LIN1 and LIN2), supporting LIN 2.x, ISO 17987-4:2016 (12 V LIN), and SAE J2602. Both channels include integrated responder termination and optimized EMC emission shaping. This dual-LIN capability is confirmed in Table 1 (feature overview) and Section 2.5 of the datasheet, distinguishing it from UJA1131A variants which contain only one LIN transceiver.
UJA1132AHW/3F4/0Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-TQFP Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 48-HTQFP (10x10)
UJA1132AHW/3F4/0Y FAQ
1.How can I place an order for UJA1132AHW/3F4/0Y through Aetrix?
Please submit a Request for Quotation (RFQ) for UJA1132AHW/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 UJA1132AHW/3F4/0Y reliable?
The price and inventory of UJA1132AHW/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 UJA1132AHW/3F4/0Y is usually 5 days.
3.What payment methods are accepted for UJA1132AHW/3F4/0Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UJA1132AHW/3F4/0Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UJA1132AHW/3F4/0Y?
UJA1132AHW/3F4/0Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UJA1132AHW/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 UJA1132AHW/3F4/0Y?
For technical support, including UJA1132AHW/3F4/0Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UJA1132AHW/3F4/0Y requirements.
6.How does Aetrix verify that UJA1132AHW/3F4/0Y is sourced from the original manufacturer or authorized distributors?
All UJA1132AHW/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 UJA1132AHW/3F4/0Y meets industry standards.
7.What is the process for return or replacement of UJA1132AHW/3F4/0Y?
All UJA1132AHW/3F4/0Y units undergo pre-shipment inspection (PSI). If there is an issue with UJA1132AHW/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 UJA1132AHW/3F4/0Y part is unused and in its original packaging.
Return procedure for UJA1132AHW/3F4/0Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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