NXP Semiconductors FS5600 Automotive Buck Regulator & Controllers

NXP Semiconductors FS5600 Automotive Buck Regulator and Controllers integrate a battery-connected DC-DC controller with external FETs and a battery-connected DC-DC converter with internal FETs. The NXP FS5600 provides functional safety features, including independent voltage monitors, a windowed watchdog timer, I/O monitoring via ERRMON and FCCU, and a built-in self-test. The FS5600 is offered in enhanced ASIL B, ASIL B, and QM variations. The enhanced ASIL B version features a challenger watchdog and Logic BIST (LBIST), which may be used to achieve ASIL D functional safety at the system level. Additional safety mechanisms may be needed at the system level for ASIL D compliance.

Features

2x High-voltage buck converters:
- Buck controller - external FETs - 900mA gate drive current
- Buck regulator - internal FETs - 3A+ load capability
- ±2% Output accuracy
- 250kHz to 3MHz switching frequency
High-efficiency PFM mode
GPIOs for seamless operation with PF PMICs
Rated from -40°C to +150°C T_J
5.0mm x 5.0mm QFN-32
AEC-Q100 Grade-1 qualified

Safety features:
- Available in enhanced ASIL B, ASIL B, and QM variations
- 2x internal and up to 4x high-accuracy external voltage monitors
- Windowed watchdog timer
- ERRMON and FCCU monitoring
- 2x PGOOD and 1x FS0B outputs
- ABIST and LBIST for latest failure check