NXP Semiconductors MFS5600AVMABEPR2

Overview

MFS5600AVMABEPR2 from NXP Semiconductors is an automotive-grade dual-output power management IC integrating a 3 A internal-FET buck regulator (SW1) and a 15 A external-FET buck controller (SW2), with ±2 % output accuracy, 450 kHz fixed switching frequency, and functional safety features including windowed watchdog timer and dual PGOOD outputs. It operates across –40 °C to 105 °C ambient for industrial automotive subsystems such as telematics and radar power rails.

For engineers reviewing the MFS5600AVMABEPR2 datasheet, MFS5600AVMABEPR2 pinout, MFS5600AVMABEPR2 application, or MFS5600AVMABEPR2 equivalent, key selection criteria include its QM safety grade, 5 V/5 V dual-output OTP configuration, 32-pin 5 mm × 5 mm WF-QFN package, and support for I²C configuration and thermal shutdown - all critical for industrial-qualified ADAS domain controllers requiring stable dual-rail sequencing.

Technical Context

The MFS5600AVMABEPR2 implements two independent buck topologies: SW1 uses peak-current-mode control with integrated high- and low-side MOSFETs (R_DS(on) = 105 mΩ / 46 mΩ), while SW2 employs external FETs with differential current sensing (SW2CSP/SW2CSN) and programmable compensation (SW2COMP). Both regulators support 250 kHz–3 MHz switching, though this specific variant is factory-programmed for 450 kHz operation on both channels.

Functional safety logic includes ERRMON and FCCU monitoring muxed with four voltage monitor inputs (VMON1–VMON4), though only VMON3/GPIO2 and VMON4/GPIO3 are accessible in QM versions; FS0B, LBIST, and Challenger Watchdog are disabled. The device uses OTP-based configuration for output voltage (5 V each), soft-start timing, and PFM/PWM mode selection - no runtime I²C writes required for basic operation.

Key Specifications

Pinout & Package

Package: 32-pin Wettable Flank QFN (WF-QFN), 5 mm × 5 mm, 0.5 mm pitch, EPAD grounded for thermal dissipation. Compliant with IPC-7351B footprint SOT617-24(SC).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-buck power management applications.

Compared with MPQ4333-AEC1 and TPS65381A-Q1, the MFS5600AVMABEPR2 uniquely delivers factory-programmed 5 V/5 V outputs in QM grade with full pin compatibility and identical 32-QFN footprint - enabling drop-in replacement where dual 5 V rails and industrial temperature range are mandatory.

Availability

MFS5600AVMABEPR2 is available at Aetrix Electronics and suitable for telematics, radar, industrial gateways, and V2X onboard units requiring stable component supply across extended temperature and automotive voltage transients.

Supply support for MFS5600AVMABEPR2 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 power management and functional safety IP.

The FS5600 product line was designed to deliver scalable, safety-aware power architectures for domain controllers and ADAS ECUs - combining integrated and controller-based regulation in a single QFN package to reduce system footprint and qualification effort.

FAQ

What safety grade does the MFS5600AVMABEPR2 support?

The MFS5600AVMABEPR2 is a QM (Quality Management) grade device, meaning it lacks ASIL-B diagnostics such as LBIST, Challenger Watchdog, or FS0B output. It is intended for non-safety-critical subsystems like telematics or industrial gateways where functional safety is managed at the system level. Its safety features are limited to basic UV/OV detection and thermal shutdown - no safety manual or FMEDA report is provided for this variant.

Does the MFS5600AVMABEPR2 require external resistors to set its 5 V outputs?

No. The MFS5600AVMABEPR2 is factory-programmed with OTP_SW1_VOLT and OTP_SW2_VOLT values corresponding to 5 V on both SW1 and SW2 outputs. SW1FB and SW2FB pins connect directly to their respective 5 V outputs - no external resistor divider is needed. This eliminates tolerance stack-up and simplifies layout versus adjustable regulators.

Can the MFS5600AVMABEPR2 operate without an external bias supply (BIAS_IN)?

Yes. When BIAS_IN is unconnected (0 V), the MFS5600AVMABEPR2 derives all internal bias from VIN, with minimum operating VIN raised to 4.4 V. This supports cold-crank operation down to 4.4 V while maintaining regulation - verified per ISO 16750-2. Connecting BIAS_IN to 5 V lowers the VIN start threshold to 2.7 V but is optional.

What is the maximum load current supported by each regulator in the MFS5600AVMABEPR2?

SW1 (integrated buck) delivers up to 3 A continuously with 3.5 A peak before current limiting engages. SW2 (external-FET controller) supports up to 15 A load current depending on selected external MOSFETs and thermal design. The 450 kHz switching frequency and low R_DS(on) FETs ensure >90 % efficiency at full load across 12 V input.

Is the MFS5600AVMABEPR2 pin-compatible with other FS5600 variants?

Yes. All FS5600 variants - including ASIL-B and Enhanced ASIL-B versions - share identical 32-pin WF-QFN (SOT617-24(SC)) packaging and pinout. The MFS5600AVMABEPR2 uses the QM pin mapping (e.g., Pins 13–14 as GPIO2/GPIO3, no VMON1/VMON2), matching the mechanical and solder footprint of other family members for seamless hardware reuse.