NXP Semiconductors MC33FS8410G3KS

Overview

MC33FS8410G3KS 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 (1.25 V/4.5 A), one BUCK3 (2.3 V/4.5 A), BOOST converter (5.74 V/1.5 A), and two LDOs (LDO1: 3.3 V/150 mA; LDO2: 5.0 V/150 mA). It targets radar systems with NXP S32R274 MCU and supports safety-critical power sequencing, fail-safe output, and SPI/I²C control.

For engineers reviewing the MC33FS8410G3KS datasheet, MC33FS8410G3KS pinout, MC33FS8410G3KS application, or MC33FS8410G3KS equivalent, this device requires attention to its OTP-configured regulator voltages (BUCK1=1.25 V, BUCK3=2.3 V, LDO1=3.3 V, LDO2=5.0 V), fail-safe state machine behavior, deep fail-safe autoretry (x15), and dedicated wake-up inputs (WAKE1/WAKE2) for low-power radar subsystems.

Technical Context

The MC33FS8410G3KS implements a dual-domain power management architecture: primary high-side VPRE controller (external MOSFETs) for 12 V/24 V input conditioning, and secondary integrated SMPS/LDO rails for MCU core (BUCK1), peripheral (BUCK3), analog (LDO1/LDO2), and boost-bias (BOOST) supply. All regulators support programmable soft-start (DVS), thermal shutdown (TSD) response, and configurable power-up sequencing slots.

Safety functionality includes independent voltage monitoring (VCOREMON, VMON1–VMON4), fail-safe output (FS0B), challenger watchdog, built-in self-test (ABIST/LBIST), and fault recovery logic. It operates under ISO 26262 ASIL B compliance, with AEC-Q100 Grade 1 qualification and MSL3 packaging.

Key Specifications

Pinout & Package

MC33FS8410G3KS uses HVQFN56 (8 mm × 8 mm × 0.85 mm, 0.5 mm pitch, wettable flank) with exposed thermal pad (EP) connected to GNDFS/GND. Pin count is 56; pins 2, 52 are NC; EP is pin 57 (GND connection required).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC33FS8410G3KS, MC33FS8410G0KS demands additional OTP programming effort for production deployment, while MC33FS8510A2KS increases safety certification scope and cost - making MC33FS8410G3KS optimal for ASIL B radar subsystems needing factory-calibrated, drop-in readiness.

Availability

MC33FS8410G3KS is available at Aetrix Electronics and suitable for radar sensor modules, ADAS domain controllers, and automotive vision systems requiring stable component supply, long-term lifecycle support, and AEC-Q100 qualified reliability.

Supply support for MC33FS8410G3KS 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.

The FS84 product line delivers ASIL B–compliant system basis chips optimized for radar, vision, and domain controller power architectures - emphasizing fail-safe operation, multi-rail integration, and automotive qualification.

FAQ

What is the primary safety rating and qualification status of the MC33FS8410G3KS?

The MC33FS8410G3KS is ASIL B–capable and developed in compliance with ISO 26262. It is qualified per AEC-Q100 Rev H Grade 1 (−40 °C to +125 °C ambient) and MSL3. Its safety features include independent voltage monitors (VCOREMON, VMON1–VMON4), fail-safe output (FS0B), challenger watchdog, and ABIST/LBIST - all validated for automotive radar subsystems.

Which regulator outputs are factory-configured in the MC33FS8410G3KS and what are their values?

The MC33FS8410G3KS has factory-programmed OTP settings: BUCK1 = 1.25 V / 4.5 A, BUCK3 = 2.3 V / 4.5 A, LDO1 = 3.3 V / 150 mA, LDO2 = 5.0 V / 150 mA, and BOOST = 5.74 V / 1.5 A peak. These match the NXP S32R274 radar MCU reference design and eliminate need for external resistor dividers or post-silicon programming.

How does the MC33FS8410G3KS support electromagnetic compatibility (EMC) in radar applications?

The MC33FS8410G3KS supports EMC via FIN/FOUT frequency synchronization pins, spread-spectrum modulation, slew rate control on switching nodes, and manual frequency tuning. These features allow alignment of SMPS switching edges across multiple devices - reducing peak emissions in sensitive 77 GHz radar bands and easing CISPR 25 Class 5 compliance.

What is the function and behavior of the FS0B pin on the MC33FS8410G3KS during fault conditions?

FS0B is an active-low open-drain fail-safe output that asserts during critical faults (e.g., thermal shutdown, over/under-voltage, watchdog timeout). In MC33FS8410G3KS, it implements deep fail-safe autoretry (x15 attempts) before latching off - enabling controlled recovery without full system reset, which is essential for radar subsystem continuity.

Can the MC33FS8410G3KS be used with both SPI and I²C interfaces, and what are their default addresses?

Yes, the MC33FS8410G3KS supports both SPI and I²C interfaces for configuration and monitoring. The default I²C address is 0x20; SPI uses standard four-wire protocol (MISO/MOSI/SCLK/CSB) with CRC protection enabled. Both interfaces provide full register access to voltage settings, sequencing slots, fault masks, and safety status registers.