The SA22001A is a synchronous four-switch buck-boost DC/DC controller that operates over a wide input voltage range of 6V to 60V. It features three operation modes: Buck, Boost, and Buck-Boost, which allow it to regulate the output voltage from an input voltage that is above, below, or equal to the output voltage. External components can be used to configure the soft-start time, 150kHz-400kHz switching frequency, and 4.5V-28V output voltage.

The SA22001A can operate in either pulse width modulation (PWM) mode or pulse frequency modulation (PFM) mode under light load conditions, depending on the application's requirements for fast dynamic response or high efficiency. The optional spread spectrum function can help improve system EMI performance. The design features a 5V drive voltage and a peak drive current capability of over 3A, making it suitable for a wide range of automotive and industrial applications. 

The SA22001A ensures safe operation in all operating conditions, providing a power good flag, a fault indicator, input undervoltage lockout (UVLO), cycle-by-cycle (CBC) current limit protection, output undervoltage protection (UVP), output overvoltage protection (OVP), output overcurrent protection (OCP), and thermal shutdown to prevent damage to the device and ensure reliable operation. 

The SA22001A is available in a QFN5×5-32 package.