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NXP Semiconductors MFS8632BMBA0ESR2
- Part No.:
- MFS8632BMBA0ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MFS8632BMBA0ESR2.pdf
- Description:
- SAFETY SYSTEM BASIS CHIP FOR DOM
- Quantity:
- Payment:
- Shipping:
Inventory:3,212
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Product details
Overview
MFS8632BMBA0ESR2 from NXP Semiconductors is a fail-safe system basis chip (SBC) designed for automotive domain controllers requiring ASIL B functional safety compliance, 12 V battery network support (36 V max), and integrated power management with VPRE buck controller (up to 15 A), BOOST converter (1 A), BUCK regulator (2.5 A), dual LDOs (400 mA each), and 10-channel ±1 % voltage monitoring. It serves as the central power and safety manager in radar and ADAS control units.
For engineers reviewing the MFS8632BMBA0ESR2 datasheet, MFS8632BMBA0ESR2 pinout, MFS8632BMBA0ESR2 application, or MFS8632BMBA0ESR2 equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive use cases, and real-world alternative part comparisons - all aligned to ISO 26262 ASIL B requirements and AEC-Q100 qualification.
Technical Context
The MFS8632BMBA0ESR2 implements a leader/follower power-up sequencing architecture via XFAILB synchronization, enabling cascaded SBC/PMIC systems to behave as one coordinated unit. Its fail-safe state machine integrates LBIST/ABIST, dedicated MCU failure monitoring (FCCU1/FCCU2), and external IC error detection (ERRMON) with latent fault detection on PGOOD, RSTB, and FS0B outputs.
It supports 32-bit I²C configuration with 8-bit CRC, OTP-programmable features including FIN/VMON9_RES pin multiplexing, and EMC-optimized switching regulators featuring spread spectrum, slew rate control, and manual frequency tuning - validated per IEC 61967-4 (conducted emission), IEC 62132-4 (conducted immunity), and FMC1278 rev. 3 (radiated emission/immunity).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 36 V DC - supports full operation across 12 V automotive battery networks including cold-crank conditions. |
| VPRE Output Capability | Configurable 3.3–5.0 V / up to 15 A - enables high-current pre-regulation for downstream MCUs or PMICs using external FETs. |
| BOOST Output | 5–6 V / 1 A - powers CAN transceivers or other 5 V peripherals directly from low-voltage rail. |
| BUCK Output | 1.0–3.3 V / 2.5 A - supplies core voltage to ADAS SoCs or radar processors with tight regulation. |
| LDO1/LDO2 Current | 400 mA each - independently powers I/O banks, sensors, or communication interfaces with load-switch capability on LDO1. |
| Voltage Monitoring | 10 inputs with ±1 % accuracy - monitors QM rails from non-NXP components and internal regulators for ASIL-compliant safety checking. |
| Functional Safety | ISO 26262 ASIL B compliant - includes independent supervision, challenger watchdog (via I²C), and safety outputs with latent fault detection. |
| Package | HPQFN48eP (SOT619-26) - 7 mm × 7 mm wettable flank QFN with exposed pad for thermal resistance of 23 °C/W (2s6p). |
Pinout & Package
Package: HPQFN48eP (7 mm × 7 mm, 0.4 mm pitch, wettable flanks, exposed thermal pad connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP1/VSUP2 | Primary power inputs | Accept 36 V max DC input with mandatory external reverse-battery diode protection. |
| VPRE_FB / PRE_CSP / PRE_CSN | VPRE feedback & current sense | Enable closed-loop regulation and overcurrent protection for external high-voltage buck stage. |
| BUCK_FB / BUCK_SW | Integrated buck regulation node | Supports direct feedback and switching node access for stability tuning and EMI filtering. |
| LDO1 / LDO2 | Linear regulator outputs | Provide low-noise, configurable voltages for MCU I/O and peripheral biasing; LDO1 includes load switch control. |
| VMON0_I2C – VMON9_RES | Voltage monitoring inputs | 10 analog inputs supporting resistor-divider or DAC-based rail monitoring with ±1 % accuracy for safety-critical supervision. |
| XFAILB | Power synchronization I/O | Enables synchronized startup/shutdown sequencing across multiple NXP SBCs in domain controller architectures. |
| FCCU1 / FCCU2 | MCU failure monitoring inputs | Accept PWM signals from MCU to detect lockup or timing faults - integral to ASIL B watchdog implementation. |
| PGOOD / RSTB / FS0B | Fail-safe outputs | Open-drain safety signals with latent fault detection; RSTB provides MCU reset with external reset monitoring capability. |
Key Features
| Feature | Design Value |
|---|---|
| ByLink System Power Platform Integration | Enables synchronized power-up/down and safety coordination across cascaded SBCs - eliminates need for external sequencers in multi-PMIC domain controllers. |
| 10-Channel ±1 % Voltage Supervision | Monitors both internal regulators and external QM rails (e.g., from third-party PMICs), extending safety coverage beyond chip boundaries for ASIL decomposition. |
| Configurable Fail-Safe Outputs | PGOOD, RSTB, and FS0B include built-in latent fault detection - ensures safety state integrity even during internal fault conditions. |
| OTP-Programmable Pin Multiplexing | FIN and VMON9_RES share pin 20; OTP selection determines function - enables flexible design reuse without hardware change. |
| EMC-Optimized Switching Regulators | Spread spectrum, slew rate control, and manual frequency tuning reduce peak emissions - meets FMC1278 radiated emission and IEC 62132-4 immunity standards. |
| Thermal Performance | RθJA = 23 °C/W (2s6p layout) - supports continuous 15 A VPRE operation in automotive under-hood environments up to 125 °C ambient. |
Applications
| Radar Processing Unit | ADAS Domain Controller |
|---|---|
Use Scenario: Powers 77 GHz radar SoC, CAN transceiver, and sensor interface in front-end radar module. IC Role / Device Role / Timing Role: Central SBC providing VPRE (5 V/10 A) for SoC pre-regulation, BOOST (5.5 V/1 A) for CAN PHY, BUCK (1.2 V/2.5 A) for SoC core, and LDOs for I/O and analog bias. Use Value: Enables single-chip power + safety solution meeting ASIL B requirements while reducing board area vs. discrete PMIC + monitor combinations. |
Use Scenario: Manages power sequencing and safety monitoring across multi-core ADAS processor, vision SoC, and Ethernet switch in zonal architecture. IC Role / Device Role / Timing Role: Leader SBC coordinating startup with follower SBCs via XFAILB; monitors 10 rails including external PMIC outputs and MCU supply domains. Use Value: Eliminates external sequencer and discrete supervisors - reduces BOM count and improves functional safety certification traceability. |
| Commercial Vehicle Camera ECU | 12 V Battery Network Gateway |
Use Scenario: Supplies stereo camera module with precise voltage rails and wake-on-vision functionality in truck cab camera system. IC Role / Device Role / Timing Role: Provides LDO1 (3.3 V/400 mA) for image sensor I/O, LDO2 (1.8 V/400 mA) for ISP core, and WAKE1/WAKE2 for motion-triggered activation. Use Value: Integrates wake detection, rail monitoring, and regulated power - enables ultra-low sleep current (10 µA) and fast wake response (<100 µs). |
Use Scenario: Acts as primary power manager in vehicle gateway ECU handling CAN FD, LIN, and Ethernet connectivity. IC Role / Device Role / Timing Role: Delivers VPRE (4.5 V/15 A) to main MCU, BOOST (5.2 V/1 A) to CAN FD transceivers, and monitors 10 rails including external Ethernet PHY supplies. Use Value: Supports 36 V max input for commercial vehicle battery transients while maintaining ±1 % rail accuracy for protocol compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fail-safe SBC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MFS8633BMBA0ESR2 | Includes ERRMON output and FIN/VMON9_RES pin enabled; supports ASIL D challenger watchdog via I²C. | Required for ASIL D systems needing external IC failure reporting and enhanced watchdog challenge capability. | Select when ERRMON signaling or ASIL D compliance is mandatory; otherwise MFS8632BMBA0ESR2 offers optimal ASIL B cost/performance balance. |
| MFS8623BMBA0ESR2 | Rated for 24 V battery network (60 V max); lacks BOOST converter; supports only 2 VMON channels (vs. 10). | Suitable for heavy-duty truck/rail applications with higher input voltage but lower monitoring complexity. | Choose for 60 V max environments where BOOST is unnecessary and voltage supervision scope is reduced. |
Compared with MFS8633BMBA0ESR2, the MFS8632BMBA0ESR2 omits ERRMON and uses simple watchdog mode - reducing system-level fault reporting depth but lowering configuration overhead. Against MFS8623BMBA0ESR2, it adds BOOST and doubles VMON capacity - enabling richer peripheral powering and broader safety coverage in 12 V ADAS gateways.
Availability
MFS8632BMBA0ESR2 is available at Aetrix Electronics and suitable for radar processing units, ADAS domain controllers, and 12 V battery network gateways requiring stable component supply, AEC-Q100 qualification, and ISO 26262 ASIL B compliance.
Supply support for MFS8632BMBA0ESR2 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, with leadership in automotive MCUs, radar processors, and functional safety-certified power management.
The FS86 family - including MFS8632BMBA0ESR2 - was developed to address scalable, fail-safe power management needs in next-generation automotive domain controllers, integrating high-current regulation, comprehensive voltage supervision, and synchronized safety logic for ASIL B–D systems.
FAQ
What is the maximum input voltage rating for MFS8632BMBA0ESR2?
MFS8632BMBA0ESR2 is rated for 12 V battery network applications with a maximum DC input voltage of 36 V on VSUP1 and VSUP2 pins. This rating covers automotive load-dump and cold-crank conditions per ISO 16750-2, and requires external reverse-battery protection diodes on both supply inputs.
Does MFS8632BMBA0ESR2 support functional safety certification?
Yes, MFS8632BMBA0ESR2 is developed in compliance with ISO 26262 and qualified to AEC-Q100 Grade 1 (−40 °C to 125 °C). It supports ASIL B safety goals through integrated LBIST/ABIST, independent voltage monitoring, challenger watchdog (I²C-configurable), and fail-safe outputs with latent fault detection - all documented in NXP's FS86 safety manual.
How many voltage rails can MFS8632BMBA0ESR2 monitor, and what is the accuracy?
MFS8632BMBA0ESR2 supports monitoring of up to 10 voltage rails with ±1 % accuracy across its VMON0_I2C through VMON9_RES inputs. This includes internal regulator outputs (e.g., VPRE, BOOST, BUCK, LDO1, LDO2) and external rails via resistor-divider or DAC-based sensing - critical for ASIL decomposition in domain controller designs.
What package type and thermal performance does MFS8632BMBA0ESR2 use?
MFS8632BMBA0ESR2 uses the HPQFN48eP package (SOT619-26), a 7 mm × 7 mm wettable flank QFN with exposed thermal pad. Its thermal resistance is RθJA = 23 °C/W under 2s6p PCB layout conditions, enabling sustained 15 A VPRE operation at 125 °C ambient - verified per JEDEC JESD51-2/8 standards.
Is MFS8632BMBA0ESR2 pin-compatible with other FS86 family members?
Yes, MFS8632BMBA0ESR2 is pin-to-pin compatible with all FS86 family variants in the HPQFN48eP package, including MFS8633BMBA0ESR2 and MFS8623BMBA0ESR2. Pin functions, package dimensions, and thermal pad layout are identical - allowing hardware reuse across ASIL B/D and 12 V/24 V network variants with only OTP and firmware changes required.
MFS8632BMBA0ESR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Camera
- Current - Supply:
- -
- Voltage - Supply:
- 36V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 48-HVQFN (7x7)
MFS8632BMBA0ESR2 FAQ
1.How can I place an order for MFS8632BMBA0ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MFS8632BMBA0ESR2 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 MFS8632BMBA0ESR2 reliable?
The price and inventory of MFS8632BMBA0ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MFS8632BMBA0ESR2 is usually 5 days.
3.What payment methods are accepted for MFS8632BMBA0ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MFS8632BMBA0ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MFS8632BMBA0ESR2?
MFS8632BMBA0ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MFS8632BMBA0ESR2 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 MFS8632BMBA0ESR2?
For technical support, including MFS8632BMBA0ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MFS8632BMBA0ESR2 requirements.
6.How does Aetrix verify that MFS8632BMBA0ESR2 is sourced from the original manufacturer or authorized distributors?
All MFS8632BMBA0ESR2 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 MFS8632BMBA0ESR2 meets industry standards.
7.What is the process for return or replacement of MFS8632BMBA0ESR2?
All MFS8632BMBA0ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MFS8632BMBA0ESR2, 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 MFS8632BMBA0ESR2 part is unused and in its original packaging.
Return procedure for MFS8632BMBA0ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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