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NXP Semiconductors MC33FS8510C4KS
- Part No.:
- MC33FS8510C4KS
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC33FS8510C4KS.pdf
- Description:
- FS8500 C0
- Quantity:
- Payment:
- Shipping:
Inventory:1,345
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Product details
Overview
MC33FS8510C4KS from NXP Semiconductors is an ASIL D–compliant automotive fail-safe system basis chip (SBC) with integrated VPRE synchronous buck controller, three low-voltage synchronous buck converters (BUCK1/BUCK2/BUCK3), one BOOST converter, and two LDOs. It delivers up to 3.6 A peak per buck rail, supports 60 V DC input, and features SPI/I²C control with CRC, fail-safe output, and power synchronization for radar domain controllers.
For engineers reviewing the MC33FS8510C4KS datasheet, MC33FS8510C4KS pinout, MC33FS8510C4KS application, or MC33FS8510C4KS equivalent, this device is selected for high-integrity radar power management where functional safety, multi-rail sequencing, EMC-optimized frequency sync, and fail-safe state machine behavior are mandatory.
Technical Context
The MC33FS8510C4KS implements a dual-domain safety architecture: dedicated monitoring circuitry (FCCU, ABIST, LBIST) and fail-safe state machine with deep fail-safe autoretry (x15). Its power management includes independent control of BUCK1 (1.025 V, 2.6 A), BUCK2 (disabled), BUCK3 (1.8 V, 4.5 A), and BOOST (5.0 V, 1.5 A peak), all configurable via OTP and runtime SPI/I²C.
It integrates four analog voltage monitors (VMON1–VMON4), VCOREMON and VDDIOMON supervision, PGOOD/RSTB outputs, and FS0B open-drain fail-safe output. The device uses HVQFN56 package with wettable flank (KS suffix), supports external MOSFETs for VPRE, and enables synchronized operation across multiple PMICs via PSYNC and FSYNC signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ASIL Level | ASIL D compliant per ISO 26262, qualified to AEC-Q100 Grade 1 (−40 °C to +150 °C) |
| Input Voltage Range | 60 V DC max - supports both 12 V and 24 V automotive battery systems with reverse-battery protection diodes on VSUP1/VSUP2 |
| BUCK1 Output | 1.025 V @ 2.6 A peak - dedicated MCU core supply with SVS capability and soft-start slope of 7.81 mV/µs |
| BUCK3 Output | 1.8 V @ 4.5 A peak - enabled rail with 2.22 MHz switching, power sequencing slot 0, and TSD shutdown + DFS response |
| BOOST Output | 5.0 V @ 1.5 A peak - integrated low-side switch, 2.22 MHz, 125 pF/750 kΩ compensation network |
| LDO1/LDO2 | 2.5 V / 3.3 V @ 400 mA each - configurable IO/ADC supplies with independent UV/OV detection and sequencing slots |
| Interface | SPI or I²C (0x20 address), CRC-protected commands, 32-bit register map, and debug mode entry via DBG pin |
Pinout & Package
MC33FS8510C4KS is housed in HVQFN56 (SOT684-23): 8 mm × 8 mm × 0.85 mm body, 0.5 mm pitch, exposed thermal pad (EP), dimple wettable flank (KS suffix), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP1 / VSUP2 | Main power inputs | Accept 60 V DC input; require external reverse-battery diodes; connect to internal regulators and bias circuits |
| BUCK1_IN / BUCK1_SW / BUCK1_FB | Core buck converter interface | Supports 1.025 V output at 2.6 A; FB loop enables precision regulation; SW node drives external inductor/diode |
| BUCK3_IN / BUCK3_SW / BUCK3_FB | Secondary buck converter interface | Enabled 1.8 V rail at 4.5 A; INQ pin allows quiet-mode operation; FB enables closed-loop stability |
| VDDIO / SCL / SDA / MISO / MOSI / SCLK / CSB | Digital interface supply and SPI/I²C | VDDIO powers buffers; SPI operates at up to 10 MHz; I²C address fixed at 0x20; all lines support 3.3 V logic |
| FS0B / PGOOD / RSTB / INTB | Fault and status outputs | FS0B is open-drain fail-safe signal; PGOOD and RSTB are active-low with mandatory VDDIO pull-up; INTB signals event interrupts |
| VCOREMON / VMON1–VMON4 | Analog monitoring inputs | Monitor BUCK1 output and four external rails; support OV/UV thresholds with programmable delay (e.g., 25 µs OV_DGLT) |
| PSYNC / FIN / FOUT | Frequency synchronization | PSYNC enables multi-device sync; FIN accepts external clock; FOUT provides synchronized output for system-wide EMC optimization |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe state machine with x15 autoretry | Enables controlled recovery from fault conditions without MCU intervention; maintains ASIL D integrity during transient failures |
| Configurable power sequencing across 8 slots | Assigns BUCK1, BUCK3, LDO1, LDO2, and BOOST to discrete start/stop slots (e.g., BUCK1 in Slot 0, BUCK3 in Slot 0) |
| EMC-optimized SMPS control | Includes spread spectrum, slew rate control, manual frequency tuning, and FSYNC input/output for deterministic noise reduction |
| Dual watchdog architecture | Challenger WD (for MCU failure detection) and simple WD (for internal timing validation) operate independently |
| OTP-programmable configuration | Pre-programmed settings for VPRE, BUCK1/BUCK3 voltages, current limits, soft-start slopes, and safety monitor enablement |
Applications
| Radar Power Management | Domain Controller Supply |
|---|---|
Use Scenario: Powers NXP S32R234 radar MCU and associated RF front-end (e.g., TEF810x) in 12 V/24 V automotive platforms. IC Role / Device Role / Timing Role: Primary SBC delivering sequenced, monitored, and fail-safe power to radar SoC core (BUCK1), I/O (LDO2), ADC (LDO1), and RF bias (BOOST). Use Value: Enables ASIL D compliance for corner/imaging radar; eliminates need for discrete supervisors and sequencers while reducing board area by >40%. | Use Scenario: Supplies centralized ADAS domain controller integrating camera, radar, and vehicle networking functions. IC Role / Device Role / Timing Role: Provides independent, time-synchronized rails (BUCK1 for MCU core, BUCK3 for PCIe/MIPI interfaces, LDOs for SerDes PHYs) with unified safety monitoring. Use Value: Supports deterministic power-up sequencing across heterogeneous subsystems; PSYNC ensures jitter-free clock distribution to multiple ICs. |
| Battery Monitoring System | Infotainment Head Unit |
Use Scenario: Used in BMS with Aurix MCU where precise voltage supervision and fail-safe signaling are critical for cell monitoring accuracy. IC Role / Device Role / Timing Role: Delivers regulated 1.025 V (BUCK1) and 1.8 V (BUCK3) rails while continuously monitoring VSUP, VCORE, and four external voltages via VMON pins. Use Value: Integrates 4-channel analog monitoring with fail-safe output (FS0B) to trigger safe shutdown before overvoltage damages sensitive BMS analog front-ends. | Use Scenario: Powers infotainment head unit with display processor, audio codec, and CAN/FlexRay transceivers in premium vehicle cabins. IC Role / Device Role / Timing Role: Supplies 1.025 V core, 1.8 V I/O, 2.5 V/3.3 V LDOs, and 5.0 V BOOST for USB/SD card; manages wake-up via WAKE1/WAKE2 pins. Use Value: Reduces external component count by consolidating 7 power rails and 4 voltage monitors into single ASIL D–certified IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fail-safe power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33FS8510A2KS | Same ASIL D rating, identical BUCK1 (1.025 V/2.6 A) and BUCK3 (1.8 V/4.5 A), but disables LDO2 and configures VMON4 for different threshold | Targeted for radar with S32R234 + TEF810x, same as MC33FS8510C4KS, but with reduced LDO2 current capability (150 mA vs. 400 mA) | Select when LDO2 load < 150 mA and cost optimization is prioritized over full 400 mA LDO2 headroom |
| MC33FS8520A0KS | Enables BUCK2 (1.8 V/4.5 A) in addition to BUCK1/BUCK3; adds multiphase capability between BUCK1 and BUCK2; same 60 V input and ASIL D compliance | Designed for domain controllers requiring higher total current (up to 7.2 A peak on combined BUCK1+BUCK2 rail), not radar-specific | Select when system requires dual-core MCU supply or >4.5 A on secondary rail; not drop-in due to BUCK2 pin activation and sequencing changes |
Compared with MC33FS8510A2KS, MC33FS8510C4KS provides full 400 mA LDO2 for high-current PHYs; compared with MC33FS8520A0KS, it omits BUCK2 to reduce complexity and cost in single-processor radar designs.
Availability
MC33FS8510C4KS is available at Aetrix Electronics and suitable for radar sensor modules, ADAS domain controllers, and battery monitoring systems requiring stable component supply, long-term automotive qualification, and ASIL D–certified power management.
Supply support for MC33FS8510C4KS 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 company specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The FS85 family is designed specifically for ASIL D–compliant automotive power management in radar, vision, and domain controller systems, integrating safety monitoring, multi-rail sequencing, and EMC-optimized switching into a single package.
FAQ
What is the primary safety certification level of the MC33FS8510C4KS?
The MC33FS8510C4KS is ASIL D–compliant per ISO 26262 and qualified to AEC-Q100 Grade 1 (−40 °C to +150 °C). Its safety architecture includes FCCU, ABIST/LBIST, dual watchdogs, and a fail-safe state machine with x15 autoretry - all validated for use in radar and domain controller safety-critical power paths. This makes MC33FS8510C4KS suitable for highest-integrity automotive subsystems.
Which power rails are enabled and configured in the MC33FS8510C4KS by default?
The MC33FS8510C4KS has BUCK1 (1.025 V, 2.6 A), BUCK3 (1.8 V, 4.5 A), BOOST (5.0 V, 1.5 A peak), LDO1 (2.5 V, 400 mA), and LDO2 (3.3 V, 400 mA) enabled. BUCK2 is disabled. All enabled rails are pre-configured via OTP for radar use with S32R234 MCU - including power sequencing slots, soft-start slopes (7.81 mV/µs for BUCK1), and TSD response behavior (shutdown + DFS).
How does the MC33FS8510C4KS support electromagnetic compatibility (EMC) in radar systems?
The MC33FS8510C4KS supports EMC through multiple hardware-level techniques: SMPS frequency synchronization (FIN/FOUT/PSYNC), spread spectrum modulation, slew rate control on switching nodes, and manual frequency tuning. These features allow system-level alignment of switching frequencies across multiple MC33FS8510C4KS devices or with external PMICs, reducing broadband noise peaks and easing CISPR 25 Class 5 compliance in radar ECU designs.
What is the role of the FS0B pin on the MC33FS8510C4KS?
The FS0B pin on the MC33FS8510C4KS is an active-low, open-drain fail-safe output that asserts during detected faults (e.g., overvoltage, thermal shutdown, watchdog timeout, or safety monitor failure). It connects directly to MCU reset or external safety controller inputs and is driven by the dedicated fail-safe state machine - ensuring deterministic behavior even if the main power management logic is compromised. FS0B remains functional under all ASIL D fault conditions.
Can the MC33FS8510C4KS be used with both SPI and I²C interfaces simultaneously?
No, the MC33FS8510C4KS supports either SPI or I²C communication - not both simultaneously. Interface selection is determined at boot via hardware strapping or OTP configuration. The device uses SCL/SDA pins for I²C (address 0x20) or MISO/MOSI/SCLK/CSB for SPI (up to 10 MHz), with CRC-protected command framing in both modes. Switching between protocols requires reprogramming OTP or changing hardware straps - not runtime reconfiguration.
MC33FS8510C4KS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- System Basis Chip
- Current - Supply:
- 15mA
- Voltage - Supply:
- 60V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 56-HVQFN (8x8)
MC33FS8510C4KS FAQ
1.How can I place an order for MC33FS8510C4KS through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33FS8510C4KS 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 MC33FS8510C4KS reliable?
The price and inventory of MC33FS8510C4KS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33FS8510C4KS is usually 5 days.
3.What payment methods are accepted for MC33FS8510C4KS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33FS8510C4KS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33FS8510C4KS?
MC33FS8510C4KS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33FS8510C4KS 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 MC33FS8510C4KS?
For technical support, including MC33FS8510C4KS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33FS8510C4KS requirements.
6.How does Aetrix verify that MC33FS8510C4KS is sourced from the original manufacturer or authorized distributors?
All MC33FS8510C4KS 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 MC33FS8510C4KS meets industry standards.
7.What is the process for return or replacement of MC33FS8510C4KS?
All MC33FS8510C4KS units undergo pre-shipment inspection (PSI). If there is an issue with MC33FS8510C4KS, 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 MC33FS8510C4KS part is unused and in its original packaging.
Return procedure for MC33FS8510C4KS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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