NCV97400 Datasheet | onsemi

Description The NCV97400 is a 4- output monolithic regulator consisting of 3 buck regulators and 1 boost regulator with supervisory functions including window voltage monitoring on all outputs and a window watchdog timer. This product is ideal for ADAS (Advanced Driver Assistance Systems) applications and utilizes an independent voltage reference and an adjustable independent oscillator to realize the supervisory features . A 40 V non- synchronous buck regulator converts the battery supply voltage to a 3.3 V output, and delivers up to 3 A (peak). This output rail may be used as the input voltage for the 2 synchronous secondary buck converters and the non- synchronous secondary boost converter. Each secondary buck is adjustable and can be set from 2.5 V to 0.8 V with 2 A peak current limit and can be supplied by up to 3.6 V from a separate supply. The secondary boost output voltage is fixed and is intended to supply a low current 5.0 V rail for In- Vehicle Networking circuits (IVN). All internal MOSFETs are N- channel devices, and bootstrap circuits are used to drive high side MOSFETs. All 4 SMPS outputs use peak current mode control with internal slope pensation. The IC incorporates an internal regulator that supplies charge to the low- voltage gate drivers. The NCV97400 is a functional safety solution that reduces the time required to develop safety systems that ply with the International Standards Organization (ISO) 26262. The device includes a range of integrated safety features such as dedicated feedback references, output voltage monitoring, and window watchdog timer. Features Voltage Options - 3 Enabled Buck Converters - 1 Boost Converter for IVN Supply - Wide Input of 4.1 to 40 V with Undervoltage Lockout (UVLO) - Fixed, 2 MHz Base Switching Frequency - Pseudo- random Spread Spectrum for Improved EMI - Window Watchdog with Independent References - Cycle- by- cycle Current Limit Protection - External Frequency Synchronization - NCV Prefix for Automotive and Other...