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NXP Semiconductors UJA1132AHW/3F0/0Y
- Part No.:
- UJA1132AHW/3F0/0Y
- Manufacturer:
- NXP Semiconductors
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- -
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UJA1132AHW/3F0/0Y.pdf
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- UJA1132AHW/3F0/0Y
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Product details
Overview
UJA1132AHW/3F0/0Y from NXP Semiconductors is a buck/boost System Basis Chip (SBC) for automotive ECUs, integrating a 3.3 V/500 mA LDO (V1), HS-CAN transceiver compliant with ISO 11898-2:201x and CAN FD up to 2 Mbit/s, dual LIN 2.x transceivers, and a switch-mode power supply supporting automatic buck or boost operation down to 2 V input. It delivers fail-safe microcontroller supply, battery monitoring, watchdog, and limp-home outputs in HTQFP48 package.
For engineers reviewing the UJA1132AHW/3F0/0Y datasheet, UJA1132AHW/3F0/0Y pinout, UJA1132AHW/3F0/0Y application, or UJA1132AHW/3F0/0Y equivalent, this SBC is selected for ECU power management where low-voltage resilience, CAN FD partial networking readiness, dual-bus interface, and configurable HVIOs are required - not as a generic voltage regulator or standalone transceiver.
Technical Context
The UJA1132AHW/3F0/0Y implements a fully integrated buck-boost SMPS with single-coil topology, automatically selecting Buck or Boost mode based on BAT voltage and load; it sustains 3.3 V/500 mA output during battery dips as low as 2 V. Its CAN transceiver meets ISO 11898-2:201x and supports CAN FD fast-phase data rates up to 2 Mbit/s with loop delay symmetry compliance.
This variant includes two LIN transceivers (LIN 2.x/SAE J2602 compliant), a 10-bit battery A/D converter with dual-channel sensing (BAT/BATSENSE), four configurable HVIOs (HS/LS/wake-up), and SPI-configurable non-volatile settings for power-on behavior, limp-home timing, and sleep mode control - all managed by an embedded system controller state machine.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| V1 Output | 3.3 V ±2 %, 500 mA - powers microcontroller with transient capability and short-circuit protection |
| SMPS Mode | Automatic Buck/Boost - maintains regulated output from 2 V battery input without external semiconductors |
| CAN Data Rate | Up to 2 Mbit/s in CAN FD fast phase - enables high-speed diagnostics and firmware updates over CAN |
| LIN Channels | Dual LIN 2.x transceivers - supports multi-sensor networks with integrated slave termination and SAE J2602 compliance |
| HVIO Count | 4 pins - individually configurable as high-side/low-side drivers or wake-up inputs with open-load diagnostics |
| Battery Monitoring | 10-bit ADC, ±300 mV accuracy at 20 V - measures BAT and BATSENSE channels for undervoltage/overvoltage shutdown |
| Package | HTQFP48 (10 mm × 10 mm) - thermally enhanced with exposed die pad for ECU-level thermal management |
Pinout & Package
UJA1132AHW/3F0/0Y uses the HTQFP48 package (SOT1181-2), 10 mm × 10 mm body with 1.0 mm height and exposed ground pad for thermal dissipation. The pad is internally connected to GND (pins 4 and 23) and must be soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V1 (Pin 6) | Main microcontroller supply output | 3.3 V regulated output; active in Standby, off in Sleep; includes clamp to limit reverse current to 50 mA |
| RXDC / TXDC (Pins 18–19) | CAN physical layer interface | Differential receive/transmit signals for ISO 11898-2-compliant HS-CAN bus; supports CAN FD up to 2 Mbit/s |
| LIN1 / LIN2 (Pins 24–25) | Dual LIN bus interfaces | Two independent LIN 2.x transceivers; Pin 25 (LIN2) is functional - confirms dual-LIN capability per family table |
| HVIO1–HVIO4 (Pins 34–37) | Configurable high-voltage I/Os | Four pins support HS/LS driving, wake-up input, or limp-home outputs (e.g., HVIO3 = 100 Hz, 10 % duty cycle) |
| INTN1 / INTN2 (Pins 11, 13) | Interrupt outputs | INTN1 reports all events; INTN2 reserved for high-priority interrupts (e.g., CAN fault, overtemperature) |
| LIMP (Pin 39) | Limp-home activation signal | Open-drain output driven LOW in Overload or Forced Sleep Preparation mode to trigger fail-safe hardware response |
Key Features
| Feature | Design Value |
|---|---|
| Integrated buck-boost SMPS | Single external coil required; enables uninterrupted MCU operation during battery dips to 2 V |
| CAN FD partial networking readiness | Includes ISO 11898-2:201x timing parameters and loop delay symmetry - prepares for future CAN FD integration without hardware change |
| Dual LIN transceivers | Both LIN1 and LIN2 pins functional; eliminates need for external LIN ICs in multi-node sensor clusters |
| Configurable HVIOs | Four pins support PWM dimming (up to 250 Hz), cyclic contact monitoring, and limp-home signaling with diagnostics |
| Non-volatile configuration | Power-on behavior, limp-home timing, and sleep mode enable/disable stored in NVM - no runtime reconfiguration needed |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) |
|---|---|
Use Scenario: Centralized power and communication management for door modules, lighting, and climate actuators. IC Role / Device Role / Timing Role: SBC provides 3.3 V MCU supply, dual-LIN interface to sensors/actuators, and CAN gateway functionality with fail-safe reset and limp-home signaling. Use Value: Eliminates discrete regulators, transceivers, and watchdog ICs; reduces BOM count while enabling coordinated low-power sleep across LIN nodes. |
Use Scenario: Powering engine management MCU under cranking conditions where battery voltage drops below 6 V. IC Role / Device Role / Timing Role: UJA1132AHW/3F0/0Y maintains stable 3.3 V supply via boost mode during cold-start dips to 2 V, while supporting CAN FD diagnostics and LIN-connected knock sensors. Use Value: Guarantees uninterrupted MCU operation and real-time sensor data acquisition during worst-case battery transients. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Electric Power Steering (EPS) Control Unit |
Use Scenario: Compact camera module requiring robust power, CAN-based firmware updates, and LIN-connected status LEDs. IC Role / Device Role / Timing Role: Delivers clean 3.3 V rail, handles CAN FD firmware download at 2 Mbit/s, and drives LIN-linked indicator lights with programmable PWM dimming. Use Value: Enables secure remote flash programming and synchronized visual feedback without adding external drivers or level shifters. |
Use Scenario: Safety-critical steering assist system needing fail-operational behavior during voltage faults. IC Role / Device Role / Timing Role: Monitors battery voltage via dual-channel ADC, triggers limp-home outputs (HVIO2–HVIO4) on fault detection, and asserts RSTN to initiate controlled MCU reset. Use Value: Provides deterministic fail-safe response - e.g., HVIO3 pulses at 100 Hz to activate mechanical fallback mode - meeting ASIL-B requirements. |
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, and 3.3 V/500 mA V1; differs only in marking suffix (no /F0/0Y), indicating identical functional spec and HTQFP48 packaging | No difference in supported use cases - both target automotive ECUs requiring low-voltage resilience and dual-bus interface | Select UJA1132HW/3V3 if traceability to standard NXP ordering code is preferred; UJA1132AHW/3F0/0Y is functionally identical with alternate marking |
| TLE9471-3ES | Single LIN channel, no boost capability (buck-only), 3.3 V/300 mA V1, different SPI register map and limp-home implementation | Suitable for cost-sensitive, lower-complexity ECUs without dual-LIN or sub-6 V operation requirements | Choose TLE9471-3ES only when dual LIN and boost-down-to-2 V are not required - not a drop-in replacement due to reduced feature set and pinout mismatch |
Compared with UJA1132HW/3V3, UJA1132AHW/3F0/0Y offers identical electrical and functional performance but with alternate traceability coding; versus TLE9471-3ES, it delivers higher integration (dual LIN + boost), greater current capacity, and more flexible limp-home timing - critical for safety-critical ECU designs.
Availability
UJA1132AHW/3F0/0Y is available at Aetrix Electronics and suitable for Body Control Modules, Engine Control Units, ADAS camera ECUs, and Electric Power Steering systems requiring stable component supply across automotive production lifecycles.
Supply support for UJA1132AHW/3F0/0Y 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 automotive, industrial, and IoT applications, with deep expertise in automotive power management and communication ICs.
The UJA113x product line delivers integrated System Basis Chips for next-generation automotive ECUs, combining power conversion, CAN/LIN interface, diagnostics, and fail-safe control in a single package - designed specifically for ASIL-ready ECU architectures.
FAQ
What is the minimum battery voltage at which UJA1132AHW/3F0/0Y can sustain 3.3 V output?
UJA1132AHW/3F0/0Y maintains regulated 3.3 V output down to 2 V battery input using its integrated boost converter. This capability is confirmed in the datasheet's SMPS section and applies specifically to UJA1132 variants (including UJA1132AHW/3F0/0Y), enabling operation during severe cranking events without MCU brownout.
Does UJA1132AHW/3F0/0Y support CAN FD partial networking like UJA1132HW/FD variants?
No - UJA1132AHW/3F0/0Y does not include CAN FD partial networking or CAN FD-passive functionality. That feature is exclusive to UJA1132HW/FD/x variants. UJA1132AHW/3F0/0Y supports full CAN FD active communication up to 2 Mbit/s but lacks selective wake-up and ISO 11898-6 compliance.
How many LIN transceivers are active in UJA1132AHW/3F0/0Y?
UJA1132AHW/3F0/0Y implements two fully functional LIN transceivers (LIN1 and LIN2), as verified in Table 1 of the datasheet and confirmed by pin assignments (Pins 24 and 25). Both channels comply with LIN 2.x and SAE J2602 standards and include integrated slave termination.
What is the purpose of the /F0/0Y suffix in UJA1132AHW/3F0/0Y?
The /F0/0Y suffix denotes a specific NXP internal marking variant - it indicates identical functionality, electrical specs, and packaging as UJA1132HW/3V3, with differences limited to traceability coding and reel labeling. No performance, pinout, or feature differences exist between UJA1132AHW/3F0/0Y and UJA1132HW/3V3.
Can UJA1132AHW/3F0/0Y drive external loads directly from its SMPS output?
Yes - the SMPS output (VSMPS, Pin 47) can supply external loads such as LED chains, as stated in Section 2.2. This capability requires proper external coil and capacitor selection per the datasheet design guidelines and does not affect the internal V1/V2 regulation paths.
UJA1132AHW/3F0/0Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Output Configuration:
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- Topology:
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- Voltage - Output (Min/Fixed):
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- Voltage - Output (Max):
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- Current - Output:
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- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
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- Supplier Device Package:
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UJA1132AHW/3F0/0Y FAQ
1.How can I place an order for UJA1132AHW/3F0/0Y through Aetrix?
Please submit a Request for Quotation (RFQ) for UJA1132AHW/3F0/0Y 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/3F0/0Y reliable?
The price and inventory of UJA1132AHW/3F0/0Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UJA1132AHW/3F0/0Y is usually 5 days.
3.What payment methods are accepted for UJA1132AHW/3F0/0Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UJA1132AHW/3F0/0Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UJA1132AHW/3F0/0Y?
UJA1132AHW/3F0/0Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UJA1132AHW/3F0/0Y 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/3F0/0Y?
For technical support, including UJA1132AHW/3F0/0Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UJA1132AHW/3F0/0Y requirements.
6.How does Aetrix verify that UJA1132AHW/3F0/0Y is sourced from the original manufacturer or authorized distributors?
All UJA1132AHW/3F0/0Y 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/3F0/0Y meets industry standards.
7.What is the process for return or replacement of UJA1132AHW/3F0/0Y?
All UJA1132AHW/3F0/0Y units undergo pre-shipment inspection (PSI). If there is an issue with UJA1132AHW/3F0/0Y, 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/3F0/0Y part is unused and in its original packaging.
Return procedure for UJA1132AHW/3F0/0Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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