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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

NXP Semiconductors MFS8603BMBA0ESR2

Name: MFS8603BMBA0ESR2
Brand: NXP Semiconductors
SKU: MFS8603BMBA0ESR2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MFS8603BMBA0ESR2

Manufacturer:: NXP Semiconductors

Category:: Power Management - Specialized

Package:: 48-VFQFN Exposed Pad

Datasheet:: MFS8603BMBA0ESR2.pdf

Description:: SAFETY SYSTEM BASIS CHIP FOR DOM

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Product details

Overview

MFS8603BMBA0ES from NXP Semiconductors is a fail-safe system basis chip (SBC) designed for 24 V battery network automotive domain controllers, integrating a 15 A high-voltage buck controller (VPRE), 1 A boost converter (BOOST), 2.5 A low-voltage buck (BUCK), two 400 mA LDOs (LDO1/LDO2), and ten ±1 % accurate voltage monitors. It delivers ASIL B functional safety compliance, I²C-based device control, and fail-safe outputs (PGOOD, RSTB, FS0B) for radar and ADAS applications.

For engineers reviewing the MFS8603BMBA0ES datasheet, MFS8603BMBA0ES pinout, MFS8603BMBA0ES application, or MFS8603BMBA0ES equivalent, this page provides verified regulator configurations, safety architecture details, thermal ratings, and real-world use cases in domain controller power sequencing and MCU supervision - critical for ISO 26262-compliant design validation.

Technical Context

The MFS8603BMBA0ES implements a leader/follower power-up sequencing architecture via XFAILB, enabling synchronized startup with cascaded PMICs in BYLink platform systems. Its fail-safe state machine independently validates up to ten voltage rails-including external PMIC supplies-with dedicated analog multiplexer (AMUX) routing and dual watchdog monitoring (FCCU1/FCCU2) for MCU hardware failure detection.

It integrates three switching regulators (VPRE, BOOST, BUCK) with spread spectrum, slew rate control, and manual frequency tuning for EMI robustness per FMC1278 rev. 3 and IEC 62132-4. The device supports 60 V max input for 24 V networks, operates down to 4.5 V battery voltage with VPRE = 3.3 V, and enters low-power OFF mode at 10 µA typical sleep current.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	−0.3 V to 60 V on VSUP1/VSUP2 pins; supports 24 V battery networks with reverse-battery protection diode required.
VPRE Output	Configurable 3.3–5.0 V, up to 15 A DC; uses external FETs and e-fuse protection to shut down system power during fault events.
BOOST Output	Configurable 5–6 V, up to 1 A DC; integrated low-side FET enables CAN PHY supply without external components.
BUCK Output	Configurable 1.0–3.3 V, up to 2.5 A DC; synchronous architecture minimizes external component count for core MCU rail.
Voltage Monitoring	10 inputs with ±1 % accuracy; monitors QM rails from non-NXP components and internal regulators via DAC/resistor bridge inputs.
Functional Safety	ASIL B compliant per ISO 26262; includes LBIST/ABIST, latent fault detection on PGOOD/RSTB/FS0B, and ERRMON for external IC failure reporting.
Package & Thermal	HPQFN48eP (SOT619-26) with exposed pad; RθJA = 23 °C/W (2s6p), RθJC_BOT = 1 °C/W for high-power thermal management.

Pinout & Package

Package: HPQFN48eP (48-pin plastic thermally enhanced very thin quad flat package with wettable flanks and exposed pad). Exposed pad must be connected to GND for thermal and electrical integrity.

Pin/Terminal	Circuit Role	Design Meaning
LDO1 / LDO2	Analog output	Configurable 1.5–5.0 V (LDO1) and 1.1–5.0 V (LDO2) outputs; each delivers up to 400 mA for MCU I/O and peripheral support with load switch capability.
VPRE_FB / PRE_CSP / PRE_CSN	Analog input	Feedback and current sense inputs for 15 A HV buck controller; enable precise regulation and overcurrent shutdown via e-fuse logic.
PGOOD / RSTB / FS0B	Digital output	Fail-safe outputs: PGOOD indicates all regulated rails are in spec; RSTB resets MCU with optional 10 ms release delay; FS0B signals safe state violation.
VMON0_I2C to VMON9_RES	Analog input	Ten voltage monitor inputs supporting DAC-based (VMON1–3) and resistor-bridge (VMON4–9) sensing; ±1 % accuracy enables QM rail supervision from third-party PMICs.
XFAILB	Digital I/O	Power synchronization interface for leader/follower sequencing with NXP low-voltage PMICs; ensures deterministic startup across multi-chip power domains.
SCL / SDA	Digital I/O	32-bit I²C interface with 8-bit CRC for configuration, status readback, and watchdog communication; supports simple/challenger watchdog modes.

Key Features

Feature	Design Value
BYLink System Power Platform Integration	Enables cascaded SBC/PMICs to behave as one unit with synchronized safety and sequencing-reducing software complexity in scalable domain controller designs.
e-Fuse Protected VPRE	Shuts down 15 A HV buck output within microseconds upon overcurrent or short-circuit, preventing damage to downstream 24 V system loads.
10-Channel ±1 % Voltage Monitoring	Validates both internal regulators and external QM rails (e.g., from non-NXP PMICs), extending safety coverage beyond the local chip boundary.
EMI-Optimized Switching Regulators	Spread spectrum, slew rate control, and manual frequency tuning meet FMC1278 rev. 3 radiated emission and IEC 62132-4 conducted immunity standards.
OTP-Configurable Functionality	A0 OTP code enables factory-programmed feature sets (e.g., FIN/VMON9_RES exclusivity, watchdog mode); avoids hardware redesign for variant differentiation.

Applications

Radar Domain Controller	ADAS Central Processing Unit
Use Scenario: Powers and supervises multi-core radar SoC (e.g., NXP S32R) in 77 GHz imaging radar modules requiring tight voltage tolerances and fail-safe response. IC Role / Device Role / Timing Role: Provides VPRE (5.0 V @ 12 A) for RF front-end bias, BOOST (5.5 V) for CAN FD transceiver, BUCK (1.2 V @ 2.5 A) for SoC core, and monitors 10 rails including external memory PMIC. Use Value: Enables single-chip power + safety solution meeting ASIL B requirements while reducing board area by consolidating six discrete regulators and supervisors.	Use Scenario: Manages power sequencing and safety monitoring for centralized ADAS domain controller integrating vision, radar, and vehicle networking functions. IC Role / Device Role / Timing Role: Acts as primary SBC coordinating startup with secondary low-voltage PMICs via XFAILB; delivers RSTB with 10 ms delay for MCU boot timing compliance and reports faults via ERRMON to host safety manager. Use Value: Eliminates need for external sequencers and discrete voltage monitors, cutting BOM cost by ~35 % versus discrete PMIC + supervisor solutions.
24 V Commercial Vehicle ECU	Automotive Electrification Gateway
Use Scenario: Supplies and protects control electronics in truck/bus battery management systems operating across −40 °C to 125 °C ambient with 60 V load dump transients. IC Role / Device Role / Timing Role: Handles 60 V max input with reverse-battery protection diodes on VSUP1/VSUP2; uses BAT_SW open-drain output to control external high-side switch for isolated subsystem power gating. Use Value: Withstands ISO 7637-2 Pulse 5a (60 V/100 ms) without derating, enabling direct connection to 24 V truck battery without external TVS clamping.	Use Scenario: Powers gateway MCU and CAN/LIN transceivers in electrified vehicle architectures where 12 V/24 V dual-network compatibility is required. IC Role / Device Role / Timing Role: Configured for 24 V network (60 V rating) but supports 12 V operation down to 4.5 V battery; LDO1/LDO2 supply isolated CAN PHY and LIN bus interfaces with independent enable control. Use Value: Single-part support for mixed-voltage gateways reduces qualification effort and enables reuse across 12 V passenger car and 24 V commercial vehicle platforms.

Radar Domain Controller

ADAS Central Processing Unit

Use Scenario: Powers and supervises multi-core radar SoC (e.g., NXP S32R) in 77 GHz imaging radar modules requiring tight voltage tolerances and fail-safe response.

IC Role / Device Role / Timing Role: Provides VPRE (5.0 V @ 12 A) for RF front-end bias, BOOST (5.5 V) for CAN FD transceiver, BUCK (1.2 V @ 2.5 A) for SoC core, and monitors 10 rails including external memory PMIC.

Use Value: Enables single-chip power + safety solution meeting ASIL B requirements while reducing board area by consolidating six discrete regulators and supervisors.

Use Scenario: Manages power sequencing and safety monitoring for centralized ADAS domain controller integrating vision, radar, and vehicle networking functions.

IC Role / Device Role / Timing Role: Acts as primary SBC coordinating startup with secondary low-voltage PMICs via XFAILB; delivers RSTB with 10 ms delay for MCU boot timing compliance and reports faults via ERRMON to host safety manager.

Use Value: Eliminates need for external sequencers and discrete voltage monitors, cutting BOM cost by ~35 % versus discrete PMIC + supervisor solutions.

24 V Commercial Vehicle ECU

Automotive Electrification Gateway

Use Scenario: Supplies and protects control electronics in truck/bus battery management systems operating across −40 °C to 125 °C ambient with 60 V load dump transients.

IC Role / Device Role / Timing Role: Handles 60 V max input with reverse-battery protection diodes on VSUP1/VSUP2; uses BAT_SW open-drain output to control external high-side switch for isolated subsystem power gating.

Use Value: Withstands ISO 7637-2 Pulse 5a (60 V/100 ms) without derating, enabling direct connection to 24 V truck battery without external TVS clamping.

Use Scenario: Powers gateway MCU and CAN/LIN transceivers in electrified vehicle architectures where 12 V/24 V dual-network compatibility is required.

IC Role / Device Role / Timing Role: Configured for 24 V network (60 V rating) but supports 12 V operation down to 4.5 V battery; LDO1/LDO2 supply isolated CAN PHY and LIN bus interfaces with independent enable control.

Use Value: Single-part support for mixed-voltage gateways reduces qualification effort and enables reuse across 12 V passenger car and 24 V commercial vehicle platforms.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fail-safe SBC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MFS8613BMBA0ES	Includes BUCK regulator (absent in MFS8603BMBA0ES); same 60 V rating, ASIL B, and pinout.	Required when local 1.0–3.3 V/2.5 A core rail must be generated on-chip instead of sourced externally.	Select MFS8613BMBA0ES only if BUCK functionality is needed; MFS8603BMBA0ES reduces thermal load when external buck is already present.
MFS8623BMBA0ES	Rated for 36 V max input (12 V battery network); identical regulator topology and safety features otherwise.	Designed for passenger car applications with lower voltage stress and reduced EMI filtering requirements.	Choose MFS8623BMBA0ES for 12 V systems; MFS8603BMBA0ES is mandatory for 24 V/60 V environments like trucks and buses.

Compared with MFS8603BMBA0ES, MFS8613BMBA0ES adds on-die BUCK capability at no pinout change, while MFS8623BMBA0ES trades 60 V tolerance for optimized 12 V network performance - both require OTP reconfiguration and share identical safety architecture and I²C interface.

Availability

MFS8603BMBA0ES is available at Aetrix Electronics and suitable for radar domain controllers, ADAS central processing units, and 24 V commercial vehicle ECUs requiring stable component supply, long-term automotive qualification, and ISO 26262 ASIL B compliance.

Supply support for MFS8603BMBA0ES 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 processors and power management ICs.

The MFS8603BMBA0ES belongs to NXP's FS86 family of fail-safe system basis chips, engineered specifically for scalable, ASIL-certified power management in automotive domain controllers, radar, and electrification systems.

FAQ

What is the maximum input voltage rating for the MFS8603BMBA0ES?

The MFS8603BMBA0ES supports a maximum DC input voltage of 60 V on VSUP1 and VSUP2 pins, making it suitable for 24 V battery network applications such as trucks and buses. External reverse-battery protection diodes are mandatory on both supply pins per the datasheet requirements.

Does the MFS8603BMBA0ES include an integrated buck converter?

No, the MFS8603BMBA0ES does not include an integrated buck converter. Per Table 1 in the FS8600_SDS, the FS8603 variant has "No" listed under the BUCK column. It provides VPRE (external-FET buck controller), BOOST, LDO1, and LDO2, but relies on external circuitry for the low-voltage buck function.

How many voltage monitoring inputs does the MFS8603BMBA0ES support?

The MFS8603BMBA0ES supports up to ten voltage monitoring inputs (VMON0–VMON9) with ±1 % accuracy. These include VMON0_I2C, VMON1–3_DAC, VMON4_RINT, and VMON5–9_RES, enabling supervision of both internal regulators and external QM rails from non-NXP components.

What safety certifications apply to the MFS8603BMBA0ES?

The MFS8603BMBA0ES is developed in compliance with ISO 26262 and qualified per AEC-Q100 Grade 1 (−40 °C to 125 °C). It achieves ASIL B functional safety fit for domain controller applications, with built-in self-test (LBIST/ABIST), latent fault detection on safety outputs, and dedicated error monitoring interfaces (ERRMON, FCCU1/FCCU2).

Is the MFS8603BMBA0ES pin-compatible with other FS86 family members?

Yes, the MFS8603BMBA0ES uses the HPQFN48eP package and shares identical pinout with all FS86xx variants in the same package (e.g., MFS8613BMBA0ES, MFS8623BMBA0ES). Pin compatibility enables hardware reuse across ASIL B/D and 12 V/24 V variants, though OTP configuration and certain pin functions (e.g., FIN vs. VMON9_RES) are mutually exclusive.

MFS8603BMBA0ESR2 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:: 60V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 48-HVQFN (7x7)

MFS8603BMBA0ESR2 FAQ

1.How can I place an order for MFS8603BMBA0ESR2 through Aetrix?

Please submit a Request for Quotation (RFQ) for MFS8603BMBA0ESR2 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 MFS8603BMBA0ESR2 reliable?

The price and inventory of MFS8603BMBA0ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MFS8603BMBA0ESR2 is usually 5 days.

3.What payment methods are accepted for MFS8603BMBA0ESR2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MFS8603BMBA0ESR2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MFS8603BMBA0ESR2?

MFS8603BMBA0ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MFS8603BMBA0ESR2 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 MFS8603BMBA0ESR2?

For technical support, including MFS8603BMBA0ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MFS8603BMBA0ESR2 requirements.

6.How does Aetrix verify that MFS8603BMBA0ESR2 is sourced from the original manufacturer or authorized distributors?

All MFS8603BMBA0ESR2 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 MFS8603BMBA0ESR2 meets industry standards.

7.What is the process for return or replacement of MFS8603BMBA0ESR2?

All MFS8603BMBA0ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MFS8603BMBA0ESR2, 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 MFS8603BMBA0ESR2 part is unused and in its original packaging.

Return procedure for MFS8603BMBA0ESR2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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