The L5959 is a multifunction voltage regulator from ST company. It can be used in car radios. The chip has four outputs: 8.5V@200mA, 8/10V@1000mA (selectable 10V or 8V), 3.3V@100mA (permanent) and 3.3V@800mA (switched power supply). In addition, L5959 has two protected HSD, reset function, battery voltage (under/over) warning output, load dump protection, independent thermal shutdown, overcurrent limitation, storage capacitor output (STCAP), small capacitor required by stability of regulators and all pins ESD protection.