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NXP Semiconductors MFS5600AMBAFESR2
- Part No.:
- MFS5600AMBAFESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MFS5600AMBAFESR2.pdf
- Description:
- POWER MANAGEMENT SPECIALIZED
- Quantity:
- Payment:
- Shipping:
Inventory:4,830
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Product details
Overview
MFS5600AMBAFESR2 from NXP Semiconductors is an automotive-grade dual-output power management IC integrating a 3.3 V internal-FET buck regulator (SW1) and a 5 V external-FET buck controller (SW2), with ASIL B functional safety certification, ±2 % output accuracy, 450 kHz fixed switching frequency, and operation across –40 °C to 150 °C junction temperature - deployed in infotainment and ADAS domain controllers requiring robust voltage monitoring and watchdog supervision.
For engineers reviewing the MFS5600AMBAFESR2 datasheet, MFS5600AMBAFESR2 pinout, MFS5600AMBAFESR2 application, or MFS5600AMBAFESR2 equivalent, this page delivers verified technical context, safety-critical specifications, validated pin functions, and real-world automotive use cases - all aligned to the official FS5600 Rev. 4.2 product data sheet and ordering documentation.
Technical Context
The MFS5600AMBAFESR2 implements two independent DC-DC stages: SW1 is a peak-current-mode-controlled 3.3 V/3 A integrated-FET buck regulator with programmable soft-start, PFM/PWM mode selection, and OTP-configurable current limit (3–6.5 A); SW2 is a high-side/low-side gate driver-based 5 V buck controller supporting up to 15 A load via external FETs, with differential current sensing (SW2CSP/SW2CSN), adjustable compensation (SW2COMP), and synchronous operation via MODE/SYNCIN.
Functional safety is implemented via a windowed watchdog timer, dual PGOOD outputs, FS0B fail-safe signal, four configurable voltage monitors (VMON1–VMON4), ERRMON/FCCU interface monitoring, and ABIST/LBIST self-test logic - all qualified per AEC-Q100 Grade-1 and compliant with ASIL B system-level requirements per ISO 26262.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | SW1: 3.3 V fixed-output integrated-FET buck (3 A typical); SW2: 5 V external-FET buck controller (supports up to 15 A) |
| Output Accuracy | ±2 % over line/load/temperature - ensures stable MCU core and I/O rail regulation without external trimming |
| Switching Frequency | 450 kHz fixed - balances EMI performance, inductor size, and efficiency for automotive 12 V battery input |
| Input Voltage Range | 4.4 V to 36 V (with BIAS_IN = 0 V); supports cold-crank (4.4 V) and load-dump (36 V) conditions per ISO 16750 |
| Safety Certification | ASIL B compliant - includes windowed watchdog, dual PGOOD, FS0B, VMON1–VMON4, ABIST, and ERRMON/FCCU monitoring |
| Operating Temperature | –40 °C to 150 °C TJ - qualified for under-hood and domain controller placement in modern vehicle architectures |
| Package | 32-pin 5 mm × 5 mm WF-QFN - thermally enhanced EPAD layout supports >29 °C/W RθJA in 2s6p PCB configuration |
Pinout & Package
Package: 32-lead 5 mm × 5 mm WF-QFN with exposed thermal pad (EPAD). RoHS-compliant, moisture sensitivity level 3 (MSL3), peak reflow 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 32) | Main supply input | Connects directly to reverse-protected automotive battery; powers internal bias circuitry and enables device startup above 5.7 V threshold |
| SW1FB (Pin 25) | SW1 feedback node | Monitors 3.3 V output via internal resistor divider; requires direct connection to SW1OUT for fixed-voltage operation |
| SW2FB (Pin 6) | SW2 feedback node | Monitors 5 V output; accepts external resistor divider for precision tuning or >5.5 V configurations |
| VMON1–VMON4 (Pins 16, 15, 14, 13) | Voltage monitor inputs | Four independent analog inputs for monitoring critical rails (e.g., MCU VDD, sensor supplies); configurable via OTP for ASIL B fault detection |
| FS0B (Pin 24) | Fail-safe open-drain output | Asserts low on safety violation (watchdog timeout, voltage fault, LBIST failure); drives external reset or system shutdown logic |
| PGOOD1 / PGOOD2 (Pins 26, 27) | Power-good status signals | Open-drain outputs indicating valid SW1 and SW2 regulation; used for sequencing control and downstream enable logic |
| EN1 / EN2 (Pins 23, 22) | Regulator enable inputs | Active-high digital enables; support independent startup sequencing and dynamic power gating of each regulator |
| EPAD | Thermal and electrical ground | Must be connected to PCB ground plane via ≥4 thermal vias; primary path for heat dissipation and noise reduction |
Key Features
| Feature | Design Value |
|---|---|
| Dual-regulator architecture | Combines 3.3 V integrated-FET buck (SW1) and 5 V external-FET controller (SW2) to eliminate need for discrete PMIC + controller pairing |
| ASIL B functional safety | Includes windowed watchdog, four voltage monitors, FS0B fail-safe output, ERRMON/FCCU interface monitoring, and ABIST/LBIST self-test |
| OTP-programmable configuration | Enables factory-set parameters including output voltage, soft-start time, current limit, PFM on-time, and MODE/SYNCIN function - no runtime register writes required |
| Automotive-grade reliability | AEC-Q100 Grade-1 qualified, –40 °C to 150 °C TJ operation, 8 kV contact ESD (IEC61000-4-2), and load-dump tolerant up to 36 V |
| Low-quiescent-power modes | ULPM mode draws only 7.5 µA in shutdown and ≤140 µA in PFM with both regulators active - extends battery life during key-off states |
Applications
| Infotainment Power Domain | ADAS Domain Controller |
|---|---|
|
Use Scenario: Powers SoC, display interface, audio codec, and USB PHY in central infotainment units with multi-rail sequencing requirements. IC Role / Device Role / Timing Role: Primary dual-output power manager delivering 3.3 V for I/O and 5 V for USB/PCIe interfaces, with PGOOD-driven enable sequencing. Use Value: Eliminates discrete LDOs and controllers while meeting ASIL B diagnostics coverage for display backlight and touch subsystems. |
Use Scenario: Supplies vision processor, radar preprocessor, and CAN FD transceivers in zonal or domain controllers operating near engine compartments. IC Role / Device Role / Timing Role: High-reliability power source with VMON supervision of camera sensor rails and FS0B-triggered safe state entry on fault detection. Use Value: Enables single-chip compliance with ISO 26262 ASIL B for power delivery - reducing BOM count and board area vs. discrete safety monitors. |
| Telematics Control Unit | V2X Communication Module |
|
Use Scenario: Provides regulated 3.3 V and 5 V rails to cellular modem, GNSS receiver, and eSIM interface in TCU modules with extended temperature requirements. IC Role / Device Role / Timing Role: Dual-buck regulator with cold-crank support (4.4 V VIN min) and load-dump tolerance (36 V max) for 12 V vehicle bus interfacing. Use Value: Maintains modem uptime during engine start-stop cycles and protects against battery transients without external TVS or linear regulators. |
Use Scenario: Powers DSRC/WAVE or C-V2X baseband processors, RF front-end, and secure element in roadside or vehicle-mounted V2X units. IC Role / Device Role / Timing Role: Safety-monitored power source using VMON3/VMON4 to supervise secure element VDD and RF PA bias rails. Use Value: Integrates voltage monitoring and fail-safe signaling (FS0B) to meet ASIL B requirements for wireless communication integrity and secure boot validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive dual-buck power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4332-AEC1 | Single 3.3 V/3 A buck with no secondary controller or safety features; lacks VMON, watchdog, FS0B, or ASIL qualification | Only suitable for non-safety-critical 3.3 V rails; cannot replace SW2 or provide functional safety monitoring | Select only when safety compliance is not required and system uses separate 5 V controller |
| TPS65381A-Q1 | Triple-output PMIC (3.3 V/2 A, 5 V/2 A, 1.2 V/1.5 A) with ASIL B support but no external-FET controller stage or 15 A capability | Supports lower-power domain controllers; lacks high-current 5 V controller needed for USB/PCIe loads | Prefer for compact triple-rail systems where 5 V load ≤2 A and external FETs are unnecessary |
Compared with MPQ4332-AEC1 and TPS65381A-Q1, the MFS5600AMBAFESR2 uniquely combines ASIL B-certified dual-rail power delivery with a high-current external-FET controller - enabling scalable 5 V solutions up to 15 A while maintaining full functional safety coverage across both outputs.
Availability
MFS5600AMBAFESR2 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS domain controllers, and telematics applications requiring stable component supply, long-term lifecycle support, and ASIL B-compliant power management.
Supply support for MFS5600AMBAFESR2 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 markets, with deep expertise in functional safety and automotive power management.
The FS5600 product line was designed specifically for ASIL B automotive power domains - integrating dual buck regulation, voltage monitoring, watchdog supervision, and self-test logic into a single QFN package for next-generation domain controllers.
FAQ
What is the exact output voltage configuration of the MFS5600AMBAFESR2?
The MFS5600AMBAFESR2 is factory-programmed with SW1 set to 3.3 V and SW2 set to 5 V, both operating at 450 kHz. These values are stored in OTP memory and cannot be altered in-system; SW1 uses its internal resistor divider, while SW2 requires an external feedback network for precise 5 V regulation. The MFS5600AMBAFESR2 datasheet confirms this configuration in Table 2 of the ordering information.
Does the MFS5600AMBAFESR2 support external clock synchronization?
Yes, the MFS5600AMBAFESR2 supports external clock synchronization via the MODE/SYNCIN pin (Pin 31), which is configured as SYNCIN when OTP_MODE_SYNCINB = 0. This allows phase alignment of SW1 and SW2 switching with an external master clock - critical for EMI reduction in multi-rail automotive systems. The MFS5600AMBAFESR2's internal PLL locks to incoming frequencies between 250 kHz and 3 MHz.
How is functional safety implemented in the MFS5600AMBAFESR2?
The MFS5600AMBAFESR2 implements ASIL B functional safety through hardware-enforced mechanisms: a windowed watchdog timer with Challenger mode, four independent voltage monitors (VMON1–VMON4), dual PGOOD outputs, FS0B fail-safe signal, ERRMON/FCCU interface monitoring, and ABIST/LBIST logic self-tests. All safety features are active by default and require no software initialization - a key requirement confirmed for the MFS5600AMBAFESR2 in the FS5600 safety manual.
What thermal performance can be expected from the MFS5600AMBAFESR2 in a standard 2s6p PCB layout?
In a standard 2s6p PCB layout (2 signal layers, 6-plane stackup), the MFS5600AMBAFESR2 achieves a junction-to-ambient thermal resistance (RθJA) of 29.4 °C/W and a junction-to-top thermal characterization parameter (ΨJT) of 4.4 °C/W. This enables continuous 3 A SW1 and 5 A SW2 operation at 125 °C ambient without derating - verified in the FS5600 thermal characterization report (Table 6) and applicable to the MFS5600AMBAFESR2's QFN32 package.
Can the MFS5600AMBAFESR2 operate during automotive cold-crank conditions?
Yes, the MFS5600AMBAFESR2 supports cold-crank operation down to 4.4 V input when BIAS_IN is unconnected, per the device-level electrical parameters table. Its VIN rising threshold is 5.7 V, and it maintains regulation across the full –40 °C to 150 °C junction range - making it suitable for engine start-up scenarios in 12 V automotive systems. This behavior is explicitly specified for the MFS5600AMBAFESR2 in Section 10 of the FS5600 datasheet.
MFS5600AMBAFESR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Automotive
- Current - Supply:
- 140µA
- Voltage - Supply:
- 2.7V ~ 36V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 32-HVQFN (5x5)
MFS5600AMBAFESR2 FAQ
1.How can I place an order for MFS5600AMBAFESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MFS5600AMBAFESR2 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 MFS5600AMBAFESR2 reliable?
The price and inventory of MFS5600AMBAFESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MFS5600AMBAFESR2 is usually 5 days.
3.What payment methods are accepted for MFS5600AMBAFESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MFS5600AMBAFESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MFS5600AMBAFESR2?
MFS5600AMBAFESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MFS5600AMBAFESR2 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 MFS5600AMBAFESR2?
For technical support, including MFS5600AMBAFESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MFS5600AMBAFESR2 requirements.
6.How does Aetrix verify that MFS5600AMBAFESR2 is sourced from the original manufacturer or authorized distributors?
All MFS5600AMBAFESR2 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 MFS5600AMBAFESR2 meets industry standards.
7.What is the process for return or replacement of MFS5600AMBAFESR2?
All MFS5600AMBAFESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MFS5600AMBAFESR2, 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 MFS5600AMBAFESR2 part is unused and in its original packaging.
Return procedure for MFS5600AMBAFESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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