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NXP Semiconductors MC33FS8405G0ESR2
- Part No.:
- MC33FS8405G0ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC33FS8405G0ESR2.pdf
- Description:
- SAFETY POWER MANAGEMENT IC, QFN5
- Quantity:
- Payment:
- Shipping:
Inventory:1,724
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Product details
Overview
MC33FS8405G0ESR2 from NXP Semiconductors is an ASIL B–capable automotive fail-safe system basis chip (SBC) integrating a VPRE synchronous buck controller, one low-voltage integrated synchronous BUCK1 converter (1.1 V, 3.6 A peak), two LDOs (1.8 V/400 mA and 3.3 V/400 mA), BOOST converter (5.0 V, 1.5 A peak), and safety monitoring circuitry. It supports radar and ADAS domain controller power architectures with external frequency synchronization and fail-safe output.
For engineers reviewing the MC33FS8405G0ESR2 datasheet, MC33FS8405G0ESR2 pinout, MC33FS8405G0ESR2 application, or MC33FS8405G0ESR2 equivalent, key selection criteria include its ASIL B safety certification per ISO 26262, OTP-configurable power-up sequencing across six slots, 60 V DC input tolerance for 12 V/24 V automotive systems, and SPI/I²C interface with CRC for configuration and fault reporting.
Technical Context
The MC33FS8405G0ESR2 implements a hierarchical safety architecture with dedicated fail-safe state machine, challenger watchdog, FCCU inputs for MCU error monitoring, and built-in self-test (ABIST/LBIST). Its power management includes independent control of VPRE (external high-side switch), BUCK1 (MCU core supply with SVS), BOOST (for PHY bias), and dual LDOs (IO/ADC rails), all coordinated via programmable power sequencing slots.
It features EMC-optimized switching with frequency synchronization (FIN/FOUT), spread spectrum, slew rate control, and manual tuning. The device supports OFF mode with 10 µA typical quiescent current and integrates four analog voltage monitors (VMON1–VMON4) with configurable OV/UV thresholds and deglitch timing for rail supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 60 V DC max - supports reverse-battery-protected 12 V and 24 V automotive battery rails. |
| BUCK1 Output | 1.1 V / 3.6 A peak - dedicated MCU core supply with static voltage scaling and SVS capability. |
| LDO1/LDO2 Outputs | 1.8 V & 3.3 V / 400 mA each - configurable IO and ADC supply rails with independent UV/OV monitoring. |
| BOOST Output | 5.0 V / 1.5 A peak - integrated low-side switch for physical layer biasing (e.g., CAN PHY). |
| Safety Certification | ASIL B compliant per ISO 26262 - includes fail-safe output (FS0B), PGOOD/RSTB, and dedicated monitoring interfaces (FCCU1/FCCU2). |
| Interface | SPI or I²C with CRC - secure register access, fault logging, and OTP configuration during engineering development. |
| Quiescent Current | 10 µA typ in OFF mode - enables ultra-low-power wake-up readiness for always-on automotive subsystems. |
Pinout & Package
MC33FS8405G0ESR2 is housed in HVQFN56 (8 mm × 8 mm × 0.85 mm, 0.5 mm pitch) with wettable flank (ES suffix) and exposed thermal pad (EP) connected to GNDFS/GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP1 / VSUP2 | Main power inputs | 60 V tolerant inputs requiring external reverse-battery diodes; primary source for internal regulators. |
| BUCK1_IN / BUCK1_SW / BUCK1_FB | Core SMPS interface | Connects to external inductor, MOSFETs, and feedback network for 1.1 V MCU core supply. |
| LDO1 / LDO2 | Linear regulator outputs | Stable 1.8 V and 3.3 V outputs for MCU IO and analog peripherals; each with 400 mA current limit. |
| FS0B | Fail-safe output | Active-low open-drain signal indicating safety-critical fault condition; drives external reset or shutdown logic. |
| FCCU1 / FCCU2 | MCU error monitoring inputs | Accept challenge signals from host MCU to verify functional integrity of communication and safety paths. |
| WAKE1 / WAKE2 | Wake-up detection inputs | Analog/digital inputs with external resistor option to detect battery-level events and initiate power-up sequence. |
| FIN / FOUT | Frequency sync I/O | Enables synchronized switching across multiple FS84/FS85 devices or external PMICs to reduce system EMI peaks. |
| PGOOD / RSTB | Power status outputs | Active-low signals indicating valid regulation and asserting MCU reset; require external pull-up to VDDIO. |
Key Features
| Feature | Design Value |
|---|---|
| OTP-programmable power sequencing | Configurable start/stop order across six independent slots - enables precise ramp-up/ramp-down for multi-rail ADAS processors. |
| Integrated fail-safe state machine | Dedicated hardware block driving FS0B output on detected faults (TSD, OV, UV, watchdog timeout) - eliminates software dependency for critical safety response. |
| EMC optimization suite | Combined FIN/FOUT sync, spread spectrum, slew rate control, and manual frequency tuning - reduces conducted/emission peaks without external components. |
| Multi-rail voltage monitoring | Four independent VMON inputs (VMON1–VMON4) with programmable OV/UV thresholds and deglitch timers - supports rail-specific fault isolation in complex power trees. |
| Low-power OFF mode | 10 µA typical IQ with wake-up capability via WAKE1/WAKE2 - meets automotive "always-on" requirements while minimizing parasitic drain. |
Applications
| Radar Sensor Power Management | ADAS Domain Controller Supply |
|---|---|
Use Scenario: Powers NXP S32R274/S32R294 radar SoCs with multiple voltage rails (core, IO, PHY, memory). IC Role / Device Role / Timing Role: Primary SBC delivering VPRE (for RF front-end), BUCK1 (1.1 V core), BOOST (5 V PHY), and LDOs (1.8 V/3.3 V IO). Use Value: Enables single-chip power solution with ASIL B compliance, eliminating discrete PMIC + supervisor combinations and reducing BOM count by ≥30%. | Use Scenario: Supplies NXP S32K3 or MPC5748G-based domain controllers requiring sequenced startup and safety monitoring. IC Role / Device Role / Timing Role: Centralized power manager coordinating BUCK1 (MCU core), LDO1/LDO2 (peripheral IO), and fail-safe signaling to MCU via FCCU and RSTB. Use Value: Integrates power sequencing, voltage supervision, and fail-safe output in one package - simplifies functional safety decomposition and reduces validation effort. |
| Vision System Camera Power | Infotainment Head Unit Power |
Use Scenario: Powers S32V-based mono/stereo camera modules with image sensor, ISP, and MIPI interface rails. IC Role / Device Role / Timing Role: Delivers BUCK1 (1.1 V ISP core), LDO1 (1.8 V MIPI), LDO2 (3.3 V sensor bias), and BOOST (5 V lens actuator). Use Value: Provides rail-specific soft-start and DVS control - prevents inrush-induced voltage droop during camera boot and ensures clean sensor operation. | Use Scenario: Supplies infotainment head units with display processor, audio codec, and connectivity ICs (Wi-Fi/BT). IC Role / Device Role / Timing Role: Manages BUCK1 (1.2 V application processor), dual LDOs (1.8 V/3.3 V peripherals), and BOOST (5 V USB/PHY) with wake-on-radio capability. Use Value: Supports ultra-low-power OFF mode (10 µA) with dual wake-up pins - extends battery life during vehicle sleep cycles without compromising responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33FS8410G0ESR2 | Adds integrated BUCK3 (3.3 V, 3.6 A) - increases rail count but requires additional inductor and layout area. | Required for vision systems needing three independent low-voltage SMPS rails (e.g., S32V + PF8x PMIC coexistence). | Select when BUCK3 is needed for auxiliary processing or memory supply; otherwise MC33FS8405G0ESR2 offers lower cost and smaller footprint. |
| MC33FS8500A0ESR2 | ASIL D certified (vs. ASIL B), adds FCCU and ERRMON monitoring, higher diagnostic coverage, and enhanced ABIST. | Mandatory for ASIL D–targeted domain controllers or safety-critical gateway functions where full fault coverage is required. | Choose only if ISO 26262 ASIL D compliance is mandated; MC33FS8405G0ESR2 satisfies ASIL B requirements at lower complexity and cost. |
Compared with MC33FS8410G0ESR2, MC33FS8405G0ESR2 reduces bill-of-materials by omitting BUCK3 while retaining identical ASIL B safety architecture and core rail capability; versus MC33FS8500A0ESR2, it delivers equivalent power functionality with simplified diagnostics for cost-sensitive ASIL B applications.
Availability
MC33FS8405G0ESR2 is available at Aetrix Electronics and suitable for radar sensor modules, ADAS domain controllers, and automotive vision systems requiring stable component supply, long-term automotive qualification, and functional safety support.
Supply support for MC33FS8405G0ESR2 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 functional safety and power management ICs.
The FS84 product line delivers ASIL B–certified system basis chips optimized for radar, vision, and ADAS domain controllers - integrating multiple SMPS, LDOs, safety monitors, and fail-safe outputs in a single automotive-grade package.
FAQ
What safety standard does the MC33FS8405G0ESR2 comply with?
The MC33FS8405G0ESR2 is developed in compliance with ISO 26262 and qualified to ASIL B safety integrity level. It includes dedicated fail-safe output (FS0B), challenger watchdog, FCCU inputs for MCU monitoring, and built-in self-test (ABIST/LBIST) - all verified per NXP's ASIL B process flow. MC33FS8405G0ESR2 does not meet ASIL D requirements.
Does the MC33FS8405G0ESR2 support external frequency synchronization?
Yes, the MC33FS8405G0ESR2 supports external frequency synchronization via dedicated FIN (input) and FOUT (output) pins. This allows phase-aligned switching across multiple MC33FS8405G0ESR2 devices or with external PMICs to minimize system-level EMI peaks and simplify EMC filtering design.
What is the maximum output current capability of the BUCK1 regulator in the MC33FS8405G0ESR2?
The BUCK1 regulator in the MC33FS8405G0ESR2 delivers up to 3.6 A peak output current at 1.1 V, configured for MCU core supply with static voltage scaling (SVS) and supervised by VCOREMON input. Its current limit is set to 2.6 A in default OTP configuration, adjustable via programming.
How many voltage rails does the MC33FS8405G0ESR2 provide?
The MC33FS8405G0ESR2 provides five regulated voltage rails: one VPRE controller (external MOSFET), one integrated BUCK1 (1.1 V), two LDOs (1.8 V and 3.3 V), and one BOOST (5.0 V). It does not include BUCK2 or BUCK3 - those are present only in higher-variant FS84 parts like MC33FS8420G0ESR2 or MC33FS8430G0ESR2.
Can the MC33FS8405G0ESR2 be used in 24 V automotive systems?
Yes, the MC33FS8405G0ESR2 supports 60 V DC maximum input voltage and is qualified for both 12 V and 24 V automotive battery systems. Its VSUP1/VSUP2 inputs require external reverse-battery protection diodes, and its internal regulators maintain regulation across wide input transients per ISO 7637-2 Pulse 5a/b specifications.
MC33FS8405G0ESR2 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)
MC33FS8405G0ESR2 FAQ
1.How can I place an order for MC33FS8405G0ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33FS8405G0ESR2 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 MC33FS8405G0ESR2 reliable?
The price and inventory of MC33FS8405G0ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33FS8405G0ESR2 is usually 5 days.
3.What payment methods are accepted for MC33FS8405G0ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33FS8405G0ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33FS8405G0ESR2?
MC33FS8405G0ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33FS8405G0ESR2 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 MC33FS8405G0ESR2?
For technical support, including MC33FS8405G0ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33FS8405G0ESR2 requirements.
6.How does Aetrix verify that MC33FS8405G0ESR2 is sourced from the original manufacturer or authorized distributors?
All MC33FS8405G0ESR2 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 MC33FS8405G0ESR2 meets industry standards.
7.What is the process for return or replacement of MC33FS8405G0ESR2?
All MC33FS8405G0ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC33FS8405G0ESR2, 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 MC33FS8405G0ESR2 part is unused and in its original packaging.
Return procedure for MC33FS8405G0ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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