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NXP Semiconductors MCZ33903CS5EK
- Part No.:
- MCZ33903CS5EK
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
MCZ33903CS5EK.pdf
- Description:
- IC INTERFACE SPECIALIZED 32SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,379
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Product details
Overview
MCZ33903CS5EK from NXP (formerly Freescale) is a second-generation System Basis Chip (SBC) designed as an automotive power management and communication interface unit for MCU-based ECUs in body, safety, and powertrain systems. It integrates a 5.0 V/150 mA MCU voltage regulator (VDD), high-speed CAN transceiver (ISO 11898-2/5 compliant), single LIN 2.1/J2602-2 interface, secured SPI with watchdog, and fail-safe state machine. It operates from 5.5–28 V input and supports -40 °C to 125 °C ambient temperature.
For engineers reviewing the MCZ33903CS5EK datasheet, MCZ33903CS5EK pinout, MCZ33903CS5EK application, or MCZ33903CS5EK equivalent, key selection considerations include its 5.0 V VDD output without external ballast support, single LIN capability, 1 wake-up I/O pin, absence of VAUX/VSENSE/MUX functions, and SOIC-32 exposed pad package - all critical for ECU power architecture and network interface consolidation.
Technical Context
The MCZ33903CS5EK implements a dedicated 5.0 V linear regulator for MCU supply (150 mA max, no external PNP support), an internal 5.0 V CAN driver supply (VCAN), and a single LIN 2.1 physical layer with configurable master termination. Its fail-safe state machine is hardware-configurable via SAFE pin and linked to cranking pulse management during low-VDD conditions.
It features secured SPI with parity checking, DBG pin for watchdog inhibition during debug, and ultra-low quiescent current (15 µA in VDD OFF mode with active CAN/LIN wake-up). The device lacks VAUX, VSENSE, and analog MUX functionality - distinguishing it from MC33903D/S, MC33904, and MC33905 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Output Voltage | 5.0 V fixed; powers MCU directly without external ballast transistor support. |
| VDD Output Current | 150 mA maximum; insufficient for high-current MCUs without supplemental regulation. |
| CAN Interface | High-speed CAN per ISO 11898-2 and ISO 11898-5; includes bus failure diagnostics and fail-safe operation. |
| LIN Interface | Single LIN 2.1 / SAE J2602-2 transceiver; supports 10.4–20 kB/s (100 kB/s fast mode); includes LIN master terminal output. |
| Wake-up Inputs | 1 dedicated wake-up I/O pin; configurable only as input (no LIN termination capability in this variant). |
| Quiescent Current | 15 µA in VDD OFF low-power mode; enables compliance with automotive static current budgets. |
| Operating Voltage Range | 5.5 V to 28 V; withstands load dump up to 40 V transient; supports cranking down to 5.5 V with pulse management. |
| Temperature Range | -40 °C to +125 °C ambient; qualified for under-hood and chassis-mounted automotive applications. |
Pinout & Package
MCZ33903CS5EK is housed in a Pb-free 32-pin SOIC Wide-body package with exposed thermal pad (suffix EK), optimized for automotive thermal and mechanical reliability. Pin count and layout align with MC33903 family SOIC-32 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP1 / VSUP2 | Main Supply Input | Primary battery input (5.5–28 V); dual pins for improved current handling and noise rejection. |
| VDD | MCU Power Output | 5.0 V regulated output; 150 mA max; no external ballast support. |
| 5V-CAN | CAN Transceiver Supply | Dedicated 5.0 V output for internal CAN driver; isolated from VDD for noise immunity. |
| CANH / CANL | CAN Bus Interface | Differential high-speed CAN physical layer; compliant with ISO 11898-2/5. |
| LIN-T | LIN Master Termination | Configurable LIN bus termination output; enables single-wire LIN 2.1 communication. |
| RXD-L / TXD-L | LIN Data Interface | UART-style LIN data path between MCU and LIN physical layer. |
| SAFE | Fail-Safe Control | Hardware-controlled pin triggering configurable fail-safe state machine behavior. |
| WAKE | Wake-up Input | Single dedicated wake-up source; detects bus activity or external signal edge. |
| CS / SCLK / MOSI / MISO | SPI Interface | Secured 4-wire SPI with parity; used for configuration, diagnostics, and watchdog control. |
| DBG | Debug Enable | Active-low pin disabling watchdog during development; eliminates false resets in debug mode. |
Key Features
| Feature | Design Value |
|---|---|
| Secured SPI with Parity | Enables robust register access and prevents misconfiguration during ECU boot or runtime updates. |
| Innovative Cranking Pulse Management | Maintains partial functionality (e.g., CAN monitoring) during engine start voltage dips without external capacitor buffering. |
| Ultra-Low Quiescent Current (15 µA) | Meets OEM static current requirements for always-on vehicle networks without compromising wake-up responsiveness. |
| Hardware-Configurable Fail-Safe State Machine | Allows deterministic ECU shutdown or safe-state entry via SAFE pin without MCU intervention. |
| Integrated High-Speed CAN + LIN 2.1 | Reduces BOM count by consolidating two critical automotive serial interfaces into one AEC-Q100 qualified IC. |
Applications
| Body Controller Module | Seat Module |
|---|---|
Use Scenario: Centralized power and communication management for door locks, window lifts, and mirror controls in modern body ECUs. IC Role / Device Role / Timing Role: Primary SBC providing regulated 5.0 V MCU supply, CAN gateway connectivity, and LIN control of local actuators. Use Value: Eliminates discrete regulators and transceivers; reduces PCB area by 35% versus discrete implementation while maintaining ISO 11898-2 and LIN 2.1 compliance. |
Use Scenario: Power and network interface for occupant detection, heating, and position adjustment in premium seat modules. IC Role / Device Role / Timing Role: System basis chip delivering 5.0 V MCU power, CAN diagnostics link, and LIN control of seat motor drivers. Use Value: Enables <15 µA sleep current essential for battery-powered seat memory retention; supports cyclic LIN sensing without MCU wake-up. |
| Electric Parking Brake (EPB) | Lighting Control Module |
Use Scenario: Safety-critical actuation control in EPB systems requiring fail-safe behavior during voltage transients. IC Role / Device Role / Timing Role: Fault-tolerant SBC managing MCU power, CAN command reception, and hardware-triggered safe state activation via SAFE pin. Use Value: Hardware-enforced fail-safe transitions reduce ASIL-B decomposition effort; cranking pulse management sustains CAN monitoring during engine start. |
Use Scenario: LED driver coordination and ambient light sensing in adaptive front lighting systems (AFS). IC Role / Device Role / Timing Role: Power manager and LIN master for LED driver ICs, with wake-up triggered by ambient sensor events. Use Value: Single LIN interface suffices for daisy-chained LED drivers; 5.0 V VDD matches common lighting MCU voltage rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar system basis chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCZ33903BS5EK | Same 5.0 V VDD, SOIC-32 package, and single LIN; "B" revision adds improved VSUP ramp-up behavior and lower sleep current. | Identical functional scope; preferred for new designs due to enhanced oscillator stability and cranking response. | Select MCZ33903BS5EK when designing for production release after Q3 2012; MCZ33903CS5EK remains valid for legacy compatibility. |
| MCZ33904C5EK | 5.0 V VDD, no LIN interface, but provides 4 wake-up I/Os and VAUX/VSENSE/MUX support absent in MCZ33903CS5EK. | Suitable where LIN is unnecessary but multi-sensor monitoring (e.g., temperature, voltage) and flexible wake-up routing are required. | Choose MCZ33904C5EK for gateways or sensors-only nodes needing analog monitoring but no LIN bus control. |
Compared with MCZ33903CS5EK, MCZ33903BS5EK offers verified improvements in startup reliability and sleep current, while MCZ33904C5EK trades LIN capability for expanded analog sensing and wake-up flexibility - enabling platform reuse across LIN-dependent and LIN-free ECU variants.
Availability
MCZ33903CS5EK is available at Aetrix Electronics and suitable for body controller modules, seat modules, electric parking brake systems, and lighting control modules requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.
Supply support for MCZ33903CS5EK 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 automotive, industrial, and IoT solutions, with deep expertise in SMARTMOS analog-power integration and functional safety design.
The MC33903 family was developed as a second-generation System Basis Chip targeting cost-optimized, safety-aware automotive ECUs in body, safety, and powertrain domains - emphasizing integration, ultra-low power, and hardware-enforced fail-safe behavior.
FAQ
What is the maximum output current of the VDD regulator in MCZ33903CS5EK?
The MCZ33903CS5EK provides a fixed 5.0 V VDD output rated for up to 150 mA. Unlike MC33903D/S or MC33905 variants, it does not support external ballast transistor augmentation. This makes MCZ33903CS5EK suitable for mid-tier MCUs such as S12x or S08x but unsuitable for high-current MPC56xx derivatives without supplemental regulation.
Does MCZ33903CS5EK support LIN 2.1 and high-speed CAN simultaneously?
Yes, MCZ33903CS5EK integrates both a LIN 2.1/J2602-2 transceiver and a high-speed CAN interface compliant with ISO 11898-2 and ISO 11898-5. They operate concurrently: LIN handles low-speed sub-system control (e.g., sensors, actuators), while CAN manages high-priority messaging (e.g., diagnostics, gateway routing) - all managed by the same MCZ33903CS5EK die.
What package type and pin count does MCZ33903CS5EK use?
MCZ33903CS5EK uses a Pb-free 32-pin SOIC Wide-body package with exposed thermal pad (suffix EK), matching the MC33903 family's standard SOIC-32 footprint. This package supports automotive thermal dissipation requirements and is compatible with standard reflow profiles for under-hood applications.
Is VAUX or VSENSE functionality available on MCZ33903CS5EK?
No, MCZ33903CS5EK does not include VAUX (auxiliary regulator), VSENSE (battery voltage monitoring), or analog MUX functionality. These features are present in MC33903D/S, MC33904, and MC33905 variants but intentionally omitted in the base MC33903 series to reduce cost and complexity for LIN+CAN-only applications.
How does the fail-safe state machine operate in MCZ33903CS5EK?
The MCZ33903CS5EK's fail-safe state machine is hardware-triggered via the SAFE pin and programmable through SPI registers. It enables deterministic transitions to preconfigured safe states (e.g., disable outputs, assert fault flags) during overvoltage, undervoltage, or thermal faults - independent of MCU software execution, supporting ASIL-B decomposition requirements.
MCZ33903CS5EK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-SSOP (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- System Basis Chip
- Interface:
- CAN, LIN
- Voltage - Supply:
- 5.5V ~ 28V
- Supplier Device Package:
- 32-SSOP-EP
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MCZ33903CS5EK FAQ
1.How can I place an order for MCZ33903CS5EK through Aetrix?
Please submit a Request for Quotation (RFQ) for MCZ33903CS5EK 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 MCZ33903CS5EK reliable?
The price and inventory of MCZ33903CS5EK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCZ33903CS5EK is usually 5 days.
3.What payment methods are accepted for MCZ33903CS5EK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCZ33903CS5EK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCZ33903CS5EK?
MCZ33903CS5EK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCZ33903CS5EK 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 MCZ33903CS5EK?
For technical support, including MCZ33903CS5EK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCZ33903CS5EK requirements.
6.How does Aetrix verify that MCZ33903CS5EK is sourced from the original manufacturer or authorized distributors?
All MCZ33903CS5EK 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 MCZ33903CS5EK meets industry standards.
7.What is the process for return or replacement of MCZ33903CS5EK?
All MCZ33903CS5EK units undergo pre-shipment inspection (PSI). If there is an issue with MCZ33903CS5EK, 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 MCZ33903CS5EK part is unused and in its original packaging.
Return procedure for MCZ33903CS5EK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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