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NXP Semiconductors UJA1135AHW/5/0Y
- Part No.:
- UJA1135AHW/5/0Y
- Manufacturer:
- NXP Semiconductors
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UJA1135AHW/5/0Y.pdf
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- UJA1135AHW/5/0Y
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Product details
Overview
UJA1135AHW/5/0Y from NXP Semiconductors is a buck/boost System Basis Chip (SBC) for automotive ECUs, integrating a 5 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, single LIN transceiver, and battery monitoring with 10-bit ADC. It delivers fail-safe power management, limp-home outputs, and SPI-configurable non-volatile settings for engine control and body electronics applications.
For engineers reviewing the UJA1135AHW/5/0Y datasheet, UJA1135AHW/5/0Y pinout, UJA1135AHW/5/0Y application, or UJA1135AHW/5/0Y equivalent, this device supports low-voltage operation down to 2 V via boost-mode SMPS for microcontroller memory retention, features dual wake-up interrupt outputs, and implements CAN FD-passive partial networking - critical for mixed CAN/CAN FD network designs requiring selective sleep without bus errors.
Technical Context
The UJA1135AHW/5/0Y integrates a buck-boost SMPS with automatic mode switching, pre-regulating V1 and V2 to achieve negligible ripple and fast transient response. Its CAN transceiver complies with ISO 11898-2:201x and ISO 11898-6:2013, enabling CAN FD active communication at 2 Mbit/s while maintaining CAN FD-passive behavior in Sleep mode.
This variant includes one LIN transceiver (LIN 2.x/SAE J2602 compliant), no HVIOs (as indicated by "/0Y" suffix), and lacks CAN partial networking support - distinguishing it from UJA113xFD/x variants. Battery monitoring uses two-channel 10-bit ADC with ±300 mV accuracy at 20 V full scale and configurable undervoltage/overvoltage detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| V1 Output | 5 V ±2 %, 500 mA continuous; supplies microcontroller with undervoltage reset at selectable 60–90 % threshold |
| V2 Output | 5 V ±2 %, 100 mA; configurable as sensor supply with short-to-battery/ground protection |
| CAN Data Rate | Up to 2 Mbit/s in CAN FD data field; ISO 11898-2:201x and ISO 11898-6:2013 compliant |
| LIN Channels | 1 channel, LIN 2.x and SAE J2602 compliant; integrated slave termination |
| Battery Monitoring | 10-bit ADC with ±300 mV accuracy at 20 V FS; dual-channel measurement on BAT/BATSENSE pins |
| SMPS Mode | Buck/low-current boost; maintains volatile memory during battery dips down to 2 V, no external semiconductors required |
| Operating Modes | Normal, Standby (V1 active), Sleep (V1 off), Off, Overload, Reset, Forced Sleep Preparation |
Pinout & Package
UJA1135AHW/5/0Y uses a 48-pin HTQFP48 package (10 mm × 10 mm, exposed die pad connected to GND) with thermal enhancement for automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BAT | Battery input for LIN transceiver & ADC source 0 | Primary 12 V supply rail; feeds LIN bias and first A/D channel |
| V1 | Main microcontroller supply output | 5 V regulated output; powers MCU core with 500 mA capability and clamp protection to <6 V |
| V2 / VEXT | Auxiliary sensor supply output | 5 V protected output (VEXT) with loss-of-ground proofing; configurable for on/off-board loads |
| RXDC / TXDC | CAN data interface | Differential receive/transmit pins for HS-CAN; referenced to VCAN = 5 V supply |
| LIN1 | Single LIN bus interface | Direct connection to LIN 1 bus line; supports LIN 2.x protocol and cyclic wake-up |
| INTN1 / INTN2 | Interrupt outputs | INTN1 signals all interrupts; INTN2 reserved for high-priority events only (e.g., overtemperature) |
| RSTN | Reset I/O | Bidirectional reset pin referenced to V1; asserts LOW during watchdog timeout or V1 undervoltage |
| SCK / SDO / SDI / SCSN | SPI interface | 4-wire SPI for configuration, diagnostics, and non-volatile memory access; 16-/24-/32-bit compatible |
| LIMP | Limp-home activation output | Open-drain output for driving external fail-safe hardware; activated in Overload or FSP mode |
| EN | Enable output | Active-HIGH safety control signal; used to shut down critical external hardware if MCU fails |
Key Features
| Feature | Design Value |
|---|---|
| Buck/Boost SMPS | Single-coil architecture with automatic mode selection; enables microcontroller memory retention down to 2 V battery input |
| CAN FD-Passive Support | Not implemented in UJA1135AHW/5/0Y; differs from UJA113xFD variants which ignore CAN FD traffic in Sleep mode |
| Configurable Limp-Home Outputs | Three dedicated limp-home signals (static, 100 Hz/10 %, 1.25 Hz/50 %) mapped to HVIO2–HVIO4 - though not available in this /0Y variant |
| Non-Volatile Configuration | Stores power-on behavior, limp-home settings, and mode control parameters; survives power cycles without reprogramming |
| Robust Automotive Protection | ±40 V short-circuit proof CAN/LIN pins; ±6 kV HBM/IEC 61000-4-2 ESD; ISO 7637-3 transient immunity on BAT/CAN/LIN |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Centralized power and communication management in gasoline/diesel engine ECUs with strict ASIL-B requirements. IC Role / Device Role / Timing Role: Primary SBC providing regulated V1/V2, CAN/LIN connectivity, battery monitoring, and fail-safe reset/limp-home signaling. Use Value: Enables uninterrupted microcontroller operation during cranking (2–6 V battery dips) via boost-mode SMPS and prevents data loss in flash/RAM. | Use Scenario: Power and bus interface for door modules, lighting controllers, and seat control units in modern vehicle architectures. IC Role / Device Role / Timing Role: Single-chip solution delivering 5 V/500 mA MCU supply, LIN communication, and diagnostic-ready wake-up inputs. Use Value: Reduces BOM count by integrating regulators, transceivers, watchdog, and ADC - simplifying layout and improving EMC robustness. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: High-reliability power management for transmission solenoid drivers and gear position sensors operating in thermally demanding environments. IC Role / Device Role / Timing Role: Supplies MCU and peripherals while monitoring battery health and triggering safe shutdown on overtemperature or overvoltage. Use Value: Overtemperature warning and autonomous Overload mode entry prevent thermal runaway; EN pin allows controlled deactivation of solenoid drivers. | Use Scenario: Consolidated interface for radar, camera, and ultrasonic sensors requiring stable power and synchronized wake-up across multiple LIN domains. IC Role / Device Role / Timing Role: Provides isolated 5 V sensor supply (VEXT), LIN communication, and precise battery voltage feedback for system-level power budgeting. Use Value: Dual-channel battery ADC enables real-time compensation for voltage drop across harnesses, improving sensor accuracy and fault detection. |
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/5V0 | Includes high-current boost SMPS (supports full MCU operation down to 2 V); same pinout and feature set except HVIO count | Required where full microcontroller runtime must be sustained during deep battery dips (e.g., start-stop systems) | Select UJA1132HW/5V0 when boost output current >100 mA is needed; UJA1135AHW/5/0Y suffices for memory retention only. |
| UJA1135HW/5V0 | Identical electrical specs and functionality; differs only in marking (/5V0 vs /5/0Y) and packaging documentation - both are 5 V, no HVIO, single-LIN variants | No functional difference; /5/0Y denotes specific tape-and-reel ordering variant per NXP internal revision control | UJA1135HW/5V0 is direct form-fit-function replacement; verify reel orientation and moisture sensitivity level (MSL) for production use. |
Compared with UJA1132HW/5V0, UJA1135AHW/5/0Y trades higher boost current capability for lower quiescent power in Sleep mode - making it optimal for always-on BCM nodes. Against UJA1135HW/5V0, it offers identical performance with traceable manufacturing batch control for OEM audit compliance.
Availability
UJA1135AHW/5/0Y is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control units, and ADAS sensor hubs requiring stable component supply across automotive production lifecycles.
Supply support for UJA1135AHW/5/0Y 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 secure connectivity and power-efficient embedded solutions.
The UJA113x product line delivers integrated System Basis Chips for automotive ECUs, designed to consolidate power regulation, CAN/LIN communication, diagnostics, and fail-safe control into a single HTQFP48 package for ASIL-B compliant systems.
FAQ
What is the primary function of the UJA1135AHW/5/0Y in an automotive ECU?
The UJA1135AHW/5/0Y serves as a System Basis Chip that integrates power regulation (5 V/500 mA V1 and 5 V/100 mA V2), HS-CAN and LIN communication interfaces, battery monitoring, watchdog, and fail-safe features like limp-home and EN-controlled shutdown. It replaces discrete power and interface components in engine control, body control, and transmission modules, reducing board space and improving reliability. The UJA1135AHW/5/0Y specifically supports memory retention during battery dips down to 2 V using its low-current boost SMPS.
Does the UJA1135AHW/5/0Y support CAN FD partial networking?
No, the UJA1135AHW/5/0Y does not support CAN FD partial networking or CAN FD-passive functionality. That capability is exclusive to UJA113xFD/x variants. The UJA1135AHW/5/0Y implements a standard ISO 11898-2:201x HS-CAN transceiver supporting up to 2 Mbit/s in the CAN FD data field but lacks selective wake-up and CAN FD traffic filtering in Sleep mode. For networks requiring CAN FD-passive behavior, UJA1131HW/FD/5V/0 or UJA1132HW/FD/5V/0 are appropriate alternatives.
What are the key differences between UJA1135AHW/5/0Y and UJA1132HW/5V0?
The UJA1135AHW/5/0Y uses a low-current boost SMPS optimized for microcontroller memory retention during battery dips, while the UJA1132HW/5V0 features a high-current boost stage capable of powering the full MCU during cranking. Both share identical pinout, 5 V V1 output, single LIN, and HTQFP48 package. The UJA1135AHW/5/0Y omits HVIOs and CAN FD partial networking - matching UJA1132HW/5V0's base feature set but differing in SMPS capability and safety-critical current delivery.
How does the battery monitoring ADC work in the UJA1135AHW/5/0Y?
The UJA1135AHW/5/0Y includes a 10-bit ADC with ±300 mV accuracy at 20 V full scale, measuring battery voltage on two independent channels: one referenced to the BAT pin and another to BATSENSE. This allows simultaneous monitoring of battery voltage before and after a polarity protection diode. The ADC supports continuous sampling, software-triggered interrupts, and configurable undervoltage/overvoltage detection thresholds - enabling precise power health assessment for ASIL-B system diagnostics. All measurements are accessible via SPI.
Is the UJA1135AHW/5/0Y pin-compatible with other UJA113x family members?
Yes, the UJA1135AHW/5/0Y is pin-compatible with all UJA113x HTQFP48 variants, including UJA1131HW/5V0, UJA1132HW/5V0, and UJA1135HW/5V0. Pin functions, layout, and mechanical footprint are identical across the family. Functional differences (e.g., boost current, HVIO count, CAN FD support) are implemented internally and do not affect PCB design - allowing flexible migration during development or qualification without layout changes.
UJA1135AHW/5/0Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
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- Packaging:
- Bulk
- Product Status:
- Active
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- Output Type:
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- -
- Voltage - Input (Min):
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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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- -
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UJA1135AHW/5/0Y FAQ
1.How can I place an order for UJA1135AHW/5/0Y through Aetrix?
Please submit a Request for Quotation (RFQ) for UJA1135AHW/5/0Y 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 UJA1135AHW/5/0Y reliable?
The price and inventory of UJA1135AHW/5/0Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UJA1135AHW/5/0Y is usually 5 days.
3.What payment methods are accepted for UJA1135AHW/5/0Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UJA1135AHW/5/0Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UJA1135AHW/5/0Y?
UJA1135AHW/5/0Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UJA1135AHW/5/0Y 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 UJA1135AHW/5/0Y?
For technical support, including UJA1135AHW/5/0Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UJA1135AHW/5/0Y requirements.
6.How does Aetrix verify that UJA1135AHW/5/0Y is sourced from the original manufacturer or authorized distributors?
All UJA1135AHW/5/0Y 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 UJA1135AHW/5/0Y meets industry standards.
7.What is the process for return or replacement of UJA1135AHW/5/0Y?
All UJA1135AHW/5/0Y units undergo pre-shipment inspection (PSI). If there is an issue with UJA1135AHW/5/0Y, 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 UJA1135AHW/5/0Y part is unused and in its original packaging.
Return procedure for UJA1135AHW/5/0Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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