Linear Technology/Analog Devices' LT8390 is a 60 V, 4-switch buck-boost/step-down-step-up DC/DC controller. This device regulates output voltage, input, or output current from an input voltage above, below, or equal to the output voltage. The proprietary peak-buck/peak-boost current mode control scheme allows adjustable and synchronizable 150 kHz to 650 kHz fixed frequency operation, or internal ±15% triangle spread spectrum frequency modulation for low EMI. The LT8390 provides input or output current monitor and power good flag. Fault protection is also provided to detect output short-circuit condition, during which the LT8390 retries, latches off, or keeps running. This controller comes in a 28-pin TSSOP and QFN package. The LT8390 is ideal for voltage regulator, battery, and supercapacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.