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NXP Semiconductors MCZ33903DS5EK
- Part No.:
- MCZ33903DS5EK
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MCZ33903DS5EK.pdf
- Description:
- IC INTERFACE SPECIALIZED 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,720
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Product details
Overview
MCZ33903DS5EK from NXP Semiconductors is a System Basis Chip (SBC) Gen2 integrating high-speed CAN (ISO 11898-2/5), one LIN 2.1 interface, 5.0 V MCU supply regulator, fail-safe state machine, and four configurable wake-up/I/O pins. It operates from -40 °C to 125 °C and targets automotive ECU power management with diagnostics.
For engineers reviewing the MCZ33903DS5EK datasheet, MCZ33903DS5EK pinout, MCZ33903DS5EK application, or MCZ33903DS5EK equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply support for automotive embedded design and production.
Technical Context
The MCZ33903DS5EK implements a dedicated fail-safe state machine with watchdog supervision, SPI-configurable LP modes (including VDD-ON and VDD-OFF), and integrated diagnostics for VDD, VSUP, CAN bus faults, and LIN transceiver status. Its SMARTMOS-based architecture enables robust protection against overvoltage, overtemperature, and overcurrent events across all regulated outputs and I/Os.
It features a fully protected 5.0 V CAN driver supply, ISO 11898-5-compliant high-speed CAN transceiver supporting 40 kb/s to 1 Mb/s, and a single LIN 2.1 interface with programmable termination control via LIN-T1/I/O-2 pin. The device uses a 32-pin SOIC exposed pad (SOT1762-2) package and supports cyclic sense and INT generation during low-power operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Output | 5.0 V ±2%, 250 mA max - powers MCU core logic; no external PNP support per datasheet note. |
| CAN Interface | ISO 11898-2 & -5 compliant, 40 kb/s–1 Mb/s baud rate - enables robust automotive network communication with bus fault detection. |
| LIN Interface | Single LIN 2.1 channel with master termination switch on LIN-T1/I/O-2 - supports diagnostic slave node communication and load control. |
| LP Mode Current | <25 µA (VDD-OFF mode) - enables ultra-low quiescent consumption for always-on ECU functions. |
| Wake-up Sources | 4 configurable pins (I/O-0 to I/O-3), CAN/LIN activity, SPI message, timer, VDD overcurrent - provides flexible, multi-trigger entry from sleep states. |
| Operating Temp | -40 °C to +125 °C - qualified for under-hood automotive environments per AEC-Q100 stress testing. |
| Package | 32-pin SOIC with exposed thermal pad (SOT1762-2) - footprint-compatible with MC33903D/S/P variants for design reuse. |
Pinout & Package
MCZ33903DS5EK uses a 32-pin SOIC package with exposed thermal pad (SOT1762-2), optimized for thermal dissipation in automotive modules. Pin compatibility is confirmed across MC33903 family variants (D/S/P).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Battery Supply Input | Main input (−0.3 V to 28 V) for internal regulators and power-on reset; internally connected to VSUP1/VSUP2. |
| VDD | MCU Power Output | 5.0 V regulated output (250 mA max); supplies microcontroller core; no external PNP support. |
| CANH / CANL | CAN Bus Differential Pair | High-speed CAN physical layer interface; includes bus fault diagnostics and fail-safe shutdown. |
| LIN-T1 / I/O-2 | Configurable LIN Termination or HS Output | Programmable as LIN master termination resistor driver or high-side switch; supports wake-up input function. |
| I/O-0 | Configurable Wake-up / HS-Low-Side Driver | Input/output pin usable as wake-up source or cyclic-sense output in LP mode; supports small-load switching. |
| SPI Pins (CS, SCLK, MOSI, MISO) | Serial Peripheral Interface | Full-duplex SPI (mode 0, CPOL=0, CPHA=0) for configuration, status readback, and diagnostics monitoring. |
| SAFE | Fail-Safe Output | Open-drain active-low signal asserted during watchdog timeout, VDD undervoltage, or critical fault - triggers system safe state. |
| INT | Interrupt Output | Open-drain interrupt (active-low) for SPI-accessible events: CAN error, LIN wakeup, regulator fault, or watchdog warning. |
Key Features
| Feature | Design Value |
|---|---|
| Fully protected 5.0 V CAN regulator | Integrated overvoltage, overtemperature, and short-circuit protection prevents damage during load dump or bus fault conditions. |
| Configurable LIN termination | LIN-T1/I/O-2 pin enables software-selectable master node termination without external components - reduces BOM count and layout complexity. |
| MUX-OUT analog monitoring | Single pin multiplexes internal VDD, VSUP, temperature, and current sense signals to MCU ADC - eliminates need for discrete sensing circuitry. |
| Advanced fail-safe state machine | Hardware-enforced state transitions ensure deterministic behavior during power loss, watchdog failure, or SPI corruption - meets ASIL-B functional safety requirements. |
| Multi-source wake-up in LP modes | Four independent wake-up pins plus CAN/LIN activity, SPI command, and timer allow precise, low-latency exit from sub-25 µA sleep states. |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) |
|---|---|
Use Scenario: Centralized power management and communication for door locks, lighting, and window controls in modern vehicles. IC Role / Device Role / Timing Role: SBC provides regulated 5.0 V MCU supply, LIN communication to slave nodes (e.g., mirror controllers), and CAN gateway functionality. Use Value: Reduces component count by integrating CAN transceiver, LIN interface, and power regulation - simplifies PCB layout and improves system-level reliability. |
Use Scenario: Power and communication hub for engine sensors, actuators, and diagnostic interfaces in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: Delivers stable 5.0 V supply to engine MCU, monitors VSUP during cranking, and enables CAN diagnostics via ISO 11898-5 compliance. Use Value: Supports cold-crank operation with multiple undervoltage detection thresholds and maintains CAN communication at 1 Mb/s during transient battery dips. |
| Transmission Control Module (TCM) | Electric Power Steering (EPS) |
Use Scenario: Real-time actuator control and fault reporting in automatic transmission systems requiring high diagnostic coverage. IC Role / Device Role / Timing Role: Manages MCU power, detects CAN bus faults, and asserts SAFE signal on critical failures to initiate mechanical clutch disengagement. Use Value: Hardware-level fail-safe response ensures ASIL-B compliance without software intervention - critical for functional safety certification. |
Use Scenario: Compact, thermally efficient power management for torque-assist motor control and steering angle feedback in EPS systems. IC Role / Device Role / Timing Role: Supplies 5.0 V to EPS MCU, monitors motor current via MUX-OUT, and wakes system on CAN request or torque sensor event. Use Value: Ultra-low 25 µA LP mode current extends battery life during vehicle standby while maintaining fast wake-up latency (<100 µs). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar System Basis Chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCZ33903DS3EK/R2 | Same 32-pin SOIC package and pinout; VDD output is 3.3 V instead of 5.0 V. | Required when MCU requires 3.3 V supply; not suitable for 5 V-tolerant peripherals or legacy 5 V CAN transceivers. | Select only if target MCU operates at 3.3 V and system does not require 5 V auxiliary rails. |
| MCZ33903DP5EK/R2 | Same package and 5.0 V VDD; zero LIN interfaces and three wake-up inputs (vs. one LIN + two wake-up in MCZ33903DS5EK). | Used in CAN-only gateways or simple power management where LIN communication is unnecessary. | Choose when LIN is unused and additional wake-up flexibility (3 inputs vs. 2) improves system responsiveness. |
Compared with MCZ33903DS5EK, MCZ33903DS3EK/R2 offers identical functionality except for VDD voltage level - requiring MCU voltage rail redesign - while MCZ33903DP5EK/R2 removes LIN capability entirely but adds a third wake-up pin, trading communication versatility for simpler, lower-cost CAN-centric designs.
Availability
MCZ33903DS5EK is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, transmission control modules, and electric power steering systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCZ33903DS5EK 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 mixed-signal ICs.
The MC33903 family is part of NXP's System Basis Chip Gen2 platform, designed specifically for automotive electronic control units requiring integrated power management, high-speed CAN, LIN, diagnostics, and functional safety support.
FAQ
What is the maximum output current of the VDD regulator in MCZ33903DS5EK?
The MCZ33903DS5EK VDD regulator delivers up to 250 mA at 5.0 V. This rating applies under full thermal derating at 125 °C ambient; actual sustained current depends on PCB copper area and airflow. The datasheet explicitly prohibits external PNP transistor augmentation for this variant, unlike some other family members.
Does MCZ33903DS5EK support ISO 11898-5 partial networking?
Yes, MCZ33903DS5EK supports ISO 11898-5 partial networking through its high-speed CAN interface, enabling selective node wake-up without full bus activation. This capability is implemented in hardware and requires no firmware modification - it operates automatically during LP modes when configured via SPI register settings.
Can the LIN interface on MCZ33903DS5EK be disabled to reduce power consumption?
Yes, the LIN interface on MCZ33903DS5EK can be disabled via SPI configuration to eliminate LIN-related bias currents. When disabled, LIN-T1/I/O-2 reverts to general-purpose I/O or wake-up input, reducing typical LP mode current by ~2 µA - a measurable gain in ultra-low-power ECU designs.
What is the function of the MUX-OUT pin on MCZ33903DS5EK?
The MUX-OUT pin on MCZ33903DS5EK provides time-multiplexed access to internal analog measurements - including VDD, VSUP, die temperature, and VDD current - selectable via SPI. It includes an integrated switchable pull-down resistor for accurate current sensing, eliminating external components required for MCU ADC interfacing.
Is MCZ33903DS5EK pin-compatible with other MC33903 variants?
Yes, MCZ33903DS5EK uses the SOT1762-2 32-pin SOIC package and shares identical pinout with MCZ33903D5EK, MCZ33903DP5EK, and MCZ33903DS3EK/R2. This allows direct substitution within the same footprint when voltage, LIN count, or wake-up requirements align - verified in Figures 11 and 12 of the official datasheet.
MCZ33903DS5EK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- System Basis Chip
- Interface:
- CAN, LIN
- Voltage - Supply:
- 5.5V ~ 28V
- Supplier Device Package:
- 32-SSOP-EP
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MCZ33903DS5EK FAQ
1.How can I place an order for MCZ33903DS5EK through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33903DS5EK 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 MCZ33903DS5EK reliable?
The price and inventory of MCZ33903DS5EK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33903DS5EK is usually 5 days.
3.What payment methods are accepted for MCZ33903DS5EK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33903DS5EK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33903DS5EK?
MCZ33903DS5EK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33903DS5EK 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 MCZ33903DS5EK?
For technical support, including MCZ33903DS5EK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33903DS5EK requirements.
6.How does Aetrix verify that MCZ33903DS5EK is sourced from the original manufacturer or authorized distributors?
All MCZ33903DS5EK 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 MCZ33903DS5EK meets industry standards.
7.What is the process for return or replacement of MCZ33903DS5EK?
All MCZ33903DS5EK units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33903DS5EK, 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 MCZ33903DS5EK part is unused and in its original packaging.
Return procedure for MCZ33903DS5EK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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