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NXP Semiconductors MC33FS8530A1KSR2
- Part No.:
- MC33FS8530A1KSR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC33FS8530A1KSR2.pdf
- Description:
- SAFETY POWER MANAGEMENT IC, QFN5
- Quantity:
- Payment:
- Shipping:
Inventory:3,228
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Product details
Overview
MC33FS8530A1KSR2 from NXP Semiconductors is an ASIL D–compliant automotive fail-safe system basis chip (SBC) integrating three synchronous buck converters (BUCK1/2/3), one boost converter, two LDOs, and comprehensive safety monitoring. It delivers 1.35 V @ 2.6 A (BUCK1), 1.8 V @ 4.5 A (BUCK2), 1.2 V @ 2.6 A (BUCK3), 5.0 V @ 1.5 A (BOOST), 2.5 V @ 400 mA (LDO1), and 3.3 V @ 400 mA (LDO2), targeting radar sensor power supply in 12 V/24 V vehicle architectures.
For engineers reviewing the MC33FS8530A1KSR2 datasheet, MC33FS8530A1KSR2 pinout, MC33FS8530A1KSR2 application, or MC33FS8530A1KSR2 equivalent, this device supports SPI/I²C configuration, frequency synchronization (FIN/FOUT), fail-safe output (FS0B), power-good signaling (PGOOD), and multi-rail sequencing for ADAS domain controllers requiring ISO 26262-compliant power management.
Technical Context
The MC33FS8530A1KSR2 implements a dual-domain safety architecture with independent monitoring circuitry, including ABIST/LBIST, challenger watchdog, FCCU interface, and configurable voltage supervision across six analog inputs (VCOREMON, VDDIOMON, VMON1–VMON4). Its fail-safe state machine drives FS0B on fault detection with infinite auto-retry capability.
It integrates a VPRE synchronous buck controller with external MOSFETs (60 V max input), enabling high-efficiency pre-regulation for downstream SMPS stages. All regulators operate at 2.22 MHz switching frequency (BUCK1/2/3/BOOST), with phase-shifting support (e.g., BUCK1 delay 3, BUCK2 delay 2, BUCK3 delay 7) to reduce EMI and enable multiphase operation between BUCK1 and BUCK2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ASIL Level | ASIL D compliant per ISO 26262, with dedicated safety monitor, FCCU interface, and fail-safe output driver |
| Input Voltage Range | 4.9 V to 60 V - supports 12 V and 24 V automotive battery systems with reverse-battery protection diodes required on VSUP1/VSUP2 |
| BUCK1 Output | 1.35 V @ 2.6 A peak - dedicated MCU core supply with SVS capability and soft-start slope of 7.81 mV/µs |
| BUCK2 Output | 1.8 V @ 4.5 A peak - enables multi-phase operation with BUCK1 to deliver up to 7.2 A on single rail |
| BOOST Output | 5.0 V @ 1.5 A peak - integrated low-side switch with 2.22 MHz switching and 125 pF/750 kΩ compensation network |
| LDO Outputs | 2.5 V @ 400 mA (LDO1) and 3.3 V @ 400 mA (LDO2) - configurable for MCU I/O and ADC supply with independent TSD shutdown + DFS response |
| Interface | SPI or I²C (address 0x20) with CRC - supports OTP programming, real-time register access, and diagnostic reporting via INTB/ERRMON |
Pinout & Package
MC33FS8530A1KSR2 is housed in a HVQFN56 package (8 mm × 8 mm × 0.85 mm, 0.5 mm pitch, wettable flank), thermally enhanced with exposed pad (EP) connected to GNDFS/GND for optimal thermal dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BUCK1_FB | Voltage feedback input | Connects to resistor divider on BUCK1 output to regulate 1.35 V with 7.81 mV/µs soft-start ramp |
| FS0B | Fail-safe output | Active-low open-drain signal asserting system-level failure; driven by internal safety state machine |
| PGOOD | Power-good indicator | Active-low output confirming all enabled rails meet regulation and sequencing timing (pull-up to VDDIO required) |
| VCOREMON | Core voltage monitor input | Must be tied directly to BUCK1 output to enable SVS and over/under-voltage fault detection (OVTH = 112 %, UVTH = 88 %) |
| PSYNC | Power sync I/O | Enables synchronized operation of two MC33FS8530A1KSR2 devices or coordination with external PMIC to minimize beat frequencies |
Key Features
| Feature | Design Value |
|---|---|
| ASIL D Safety Architecture | Dedicated monitoring circuitry, FCCU interface, challenger watchdog, and fail-safe output enable full partitioning into safety-critical subsystems |
| Multi-Rail Sequencing | Configurable power-up/down slots (e.g., BUCK1 in Slot 1, BUCK2 in Slot 0, BUCK3 in Slot 6) ensure deterministic startup for radar SoCs like S32R274 |
| EMC Optimization | SMPS frequency synchronization (FIN/FOUT), spread spectrum, slew rate control, and manual tuning reduce radiated emissions in sensitive radar bands |
| OTP-Programmable Configuration | Factory-programmed settings (e.g., BUCK1=1.35 V, BUCK2=1.8 V, BUCK3=1.2 V, LDO1=2.5 V, LDO2=3.3 V) eliminate external configuration components |
| Thermal Fault Response | Per-rail thermal shutdown with DFS (deep fail-safe) activation ensures graceful degradation - e.g., BUCK1 shutdown + DFS on TSD |
Applications
| Radar Sensor Power Supply | ADAS Domain Controller |
|---|---|
Use Scenario: Powers NXP S32R274-based corner radar modules requiring tightly regulated, sequenced, and monitored voltage rails. IC Role / Device Role / Timing Role: Primary SBC delivering BUCK1 (1.35 V core), BUCK2 (1.8 V I/O), BUCK3 (1.2 V SerDes), BOOST (5.0 V PHY), and LDOs (2.5 V/3.3 V analog). Use Value: Enables ASIL D compliance via integrated safety features, eliminates discrete supervision ICs, and reduces board area by consolidating 6 regulators + monitoring. | Use Scenario: Supplies power and safety monitoring for centralized ADAS domain controllers integrating multiple vision/radar processors. IC Role / Device Role / Timing Role: Centralized power manager coordinating startup/shutdown of heterogeneous compute elements (e.g., S32G, S32R) with slot-based sequencing and cross-rail dependency handling. Use Value: Reduces inter-IC communication overhead via PSYNC and FCCU, improves system-level fault coverage with ABIST/LBIST, and simplifies functional safety certification. |
| Vision System Power Management | Imaging Radar Platform |
Use Scenario: Powers S32V-based mono/stereo camera modules with precise voltage accuracy and low-noise LDOs for image sensor analog front-ends. IC Role / Device Role / Timing Role: Delivers 1.2 V (BUCK3), 1.8 V (BUCK2), 2.5 V (LDO1), and 3.3 V (LDO2) with <±1 % output tolerance and soft-start control to prevent inrush-induced reset. Use Value: Ensures clean power for high-speed MIPI interfaces and ADC references, minimizing image noise and frame drop during cold cranking. | Use Scenario: Supports imaging radar platforms using S32R MCUs with TEF810x RF transceivers requiring stable 1.35 V core, 1.2 V SerDes, and 5.0 V BOOST for RF bias. IC Role / Device Role / Timing Role: Provides synchronized, low-jitter power with FIN/FOUT locking to avoid interference between radar chirps and SMPS switching harmonics. Use Value: Achieves <100 ps jitter on BOOST output and enables phase-aligned BUCK1/BUCK2 operation to suppress EMI in 77 GHz band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33FS8530A4KSR2 | BUCK1 = 1.1 V, BUCK3 = 3.3 V, VPRE = 4.1 V, no PSYNC, PLL enabled, TSD behavior differs on BUCK2/BUCK3 | Targeted for imaging radar with S32R MCU where higher BUCK3 voltage powers RF front-end bias rails | Select when 3.3 V BUCK3 and PLL clock generation are required; not pin-compatible due to differing PSYNC functionality |
| MC33FS8520A0KSR2 | Omits BUCK3; BUCK1 = 1.35 V, BUCK2 = 1.8 V, BOOST = 5.0 V, LDO1 = 2.5 V, LDO2 = 3.3 V, same ASIL D safety features | Optimized for domain controllers without SerDes or auxiliary 1.2 V rails - reduces cost and complexity | Choose when BUCK3 is unnecessary; retains identical pinout, safety architecture, and sequencing flexibility for BUCK1/BUCK2/BOOST/LDOs |
Compared with MC33FS8530A1KSR2, MC33FS8530A4KSR2 offers higher BUCK3 voltage and PLL support but removes PSYNC for multi-device sync, while MC33FS8520A0KSR2 provides identical core functionality without BUCK3 - enabling cost-optimized designs where SerDes power is supplied externally.
Availability
MC33FS8530A1KSR2 is available at Aetrix Electronics and suitable for radar sensor modules, ADAS domain controllers, vision systems, and imaging radar platforms requiring stable component supply, AEC-Q100 Grade 1 qualification, and long-term automotive lifecycle support.
Supply support for MC33FS8530A1KSR2 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 functional safety and automotive-grade power management.
The FS85 family, including MC33FS8530A1KSR2, was designed specifically for ASIL D–compliant ADAS and automated driving systems, integrating multi-rail power conversion, real-time safety monitoring, and EMC-optimized switching to replace discrete power trees in radar, vision, and domain controller ECUs.
FAQ
What is the maximum input voltage supported by the MC33FS8530A1KSR2?
The MC33FS8530A1KSR2 supports a maximum input voltage of 60 V DC, making it compatible with both 12 V and 24 V automotive battery systems. Reverse-battery protection diodes must be placed in series with VSUP1 and VSUP2 pins per the datasheet requirements. The device's VSUP power-up threshold is 4.9 V, ensuring reliable startup after cold cranking events.
Does the MC33FS8530A1KSR2 support SPI and I²C interfaces simultaneously?
No, the MC33FS8530A1KSR2 supports either SPI or I²C - not both simultaneously. The interface is selected at boot via hardware strapping or OTP configuration. Its I²C address is fixed at 0x20, and SPI uses standard four-wire protocol (CSB, SCLK, MOSI, MISO) with CRC-enabled transactions. Both interfaces provide full register access for configuration, monitoring, and diagnostics of all regulators and safety functions.
How does the fail-safe output (FS0B) behave during a thermal fault?
During a thermal shutdown (TSD) event, the MC33FS8530A1KSR2 asserts FS0B low as part of its deep fail-safe (DFS) response. For BUCK1, the behavior is "BUCK1 shutdown + DFS", meaning the regulator disables and the fail-safe state machine activates FS0B to signal system-level fault. This action is irreversible until reset via RSTB or power cycle, and DFS retry is configured for infinite attempts per the OTP setting.
Can the MC33FS8530A1KSR2 be used in a multi-chip power architecture?
Yes, the MC33FS8530A1KSR2 supports multi-chip coordination via its PSYNC pin, which operates as bidirectional power synchronization I/O. It can synchronize switching frequencies with a second MC33FS8530A1KSR2 or an external PMIC to eliminate beat frequencies and reduce system-level EMI. This capability is confirmed in the device options table and block diagram for the FS8530 superset configuration.
What are the key differences between MC33FS8530A1KSR2 and MC33FS8530A0KSR2?
The MC33FS8530A1KSR2 is an OTP-programmed variant with fixed configurations: BUCK1 = 1.35 V, BUCK2 = 1.8 V, BUCK3 = 1.2 V, LDO1 = 2.5 V, LDO2 = 3.3 V, VPRE = 3.3 V, and infinite DFS retry. In contrast, MC33FS8530A0KSR2 is non-programmed (blank OTP), requiring full software configuration via SPI/I²C for all regulator outputs, sequencing, and safety parameters before operational use.
MC33FS8530A1KSR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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)
MC33FS8530A1KSR2 FAQ
1.How can I place an order for MC33FS8530A1KSR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33FS8530A1KSR2 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 MC33FS8530A1KSR2 reliable?
The price and inventory of MC33FS8530A1KSR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33FS8530A1KSR2 is usually 5 days.
3.What payment methods are accepted for MC33FS8530A1KSR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33FS8530A1KSR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33FS8530A1KSR2?
MC33FS8530A1KSR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33FS8530A1KSR2 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 MC33FS8530A1KSR2?
For technical support, including MC33FS8530A1KSR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33FS8530A1KSR2 requirements.
6.How does Aetrix verify that MC33FS8530A1KSR2 is sourced from the original manufacturer or authorized distributors?
All MC33FS8530A1KSR2 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 MC33FS8530A1KSR2 meets industry standards.
7.What is the process for return or replacement of MC33FS8530A1KSR2?
All MC33FS8530A1KSR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33FS8530A1KSR2, 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 MC33FS8530A1KSR2 part is unused and in its original packaging.
Return procedure for MC33FS8530A1KSR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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