FS84/FS85C Fail-safe system basis chip with multiple SMPS and LDO Rev. 7 7 May 2021 Product brief 1 About this document This Product brief is intended to provide overview/summary information for the purpose of evaluating a product for design suitability. It is intended for quick reference only and should not be relied upon to contain detailed and full information. Some of the content in this product brief is extracted from the product s full data sheet. In case of any inconsistency or conflict, the full data sheet shall prevail. For detailed and full information, see the relevant FS84 FS85 full data sheet, available via the NXP DocStore at NXP Semiconductors FS84/FS85C Fail-safe system basis chip with multiple SMPS and LDO Based on device options (see Table 1): low voltage integrated synchronous BUCK3 converter. Configurable output voltage and current capability up to 3.6 A peak. BOOST converter with integrated low-side switch. Configurable output voltage and max input current up to 1.5 A peak. EMC optimization techniques including SMPS frequency synchronization, spread spectrum, slew rate control, manual frequency tuning 2x linear voltage regulators for MCU IOs and ADC supply, external physical layer. Configurable output voltage and current capability up to 400 mA DC. OFF mode (power down) with very low quiescent current (10 A typ) 2x input pins for wake-up detection and battery voltage sensing Device control via 32 bits SPI or I2C interface with CRC Power synchronization pin to operate 2x FS85 devices or FS85 plus an external PMIC Scalable portfolio from ASIL B to ASIL D with independent monitoring circuitry, dedicated interface for MCU monitoring, simple and challenger watchdog function, power good, reset and interrupt, built-in self-test, fail-safe output Configuration by OTP programming. Prototype enablement to support custom setting during project development in engineering mode. 4 Applications Radar (corner radar, imaging radar, ...) Vision (mono camera, stereo camera, night vision, ...) ADAS domain controller Infotainment V2x 5 Ordering information Table 1.Device options Device options BUCK1 BUCK2 BUCK3 FCCU VMONx ASIL FS8400 Yes No No No up to 2 B FS8405 Yes No No optional up to 4 B FS8410 Yes No Yes No up to 2 B FS8415 Yes No Yes optional up to 4 B FS8420 Yes Yes No No up to 2 B FS8425 Yes Yes No optional up to 4 B FS8430 Yes Yes Yes No up to 2 B FS8435 Yes Yes Yes optional up to 4 B FS8500 Yes No No Yes up to 4 D FS8510 Yes No Yes Yes up to 4 D FS8520 Yes Yes No Yes up to 4 D FS8530 Yes Yes Yes Yes up to 4 D PB FS84 FS85C All information provided in this document is subject to legal disclaimers. NXP B.V. 2021. All rights reserved. Product brief Rev. 7 7 May 2021 2 / 21