FS5600 Automotive buck regulator and controller with voltage monitors and watchdog timer Rev. 2 1 June 2021 Product data sheet 1 General Description The FS5600 integrates a battery connected DC-DC controller with external FETs and a battery connected DC-DC converter with internal FETs. In addition, it offers functional safety features such as independent voltage monitors, windowed watchdog timer, I/O monitoring via ERRMON and FCCU and built-in self-test.NXP Semiconductors FS5600 Automotive buck regulator and controller with voltage monitors and watchdog timer 2 Features and Benefits 2 x High-Voltage Buck Converters: Buck Controller - External FETs - 900 mA gate drive current Buck Regulator - Internal FETs - 3 A+ load capability 2 % Output Accuracy 250 kHz to 3 MHz switching frequency High-efficiency PFM mode Safety Features: Available in Enhanced ASIL B, ASIL B, and QM variations 2 internal and up to 4 high-accuracy external voltage monitors Windowed Watchdog Timer ERRMON and FCCU monitoring 2 x PGOOD and 1 x FS0B outputs ABIST and LBIST for latest failure check GPIOs for seamless operation with PF PMICs Rated from 40 C to 150 C T J 32-Ld 5 mm x 5 mm QFN AEC-Q100 Grade-1 Qualified 2.1 Overview FS5600 Functional Block Diagram SW1 - Buck Regulator SW2 - Buck Controller Up to 36 V Input Up to 36 V Input > 3 A Load Current > 10 A L oad 1.8 V to 8.0 V Output 1.8 V to 7.2 V Output Internal FET External FET ABIST 4x VMON 2x PGOOD Clock Sync LBIST Spread FS0B Watchdog I2C Spectrum OTP Thermal Frequency 3x GPIO Memory Shutdown Tuning aaa-037150 Figure 1.FS5600 Functional block diagram FS5600 All information provided in this document is subject to legal disclaimers. NXP B.V. 2021. All rights reserved. Product data sheet Rev. 2 1 June 2021 2 / 113