The TLE 4278 is a monolithic integrated low-drop fixed-voltage regulator which can supply loads up to 200 mA. The device is available in the P-DSO-14-4 package. It is designed to supply microprocessor systems under the severe conditions of automotive applications and therefore is equipped with additional protection functions against over load, short circuit and over temperature. Of course the TLE 4278 can also be used in other applications where a stabilized voltage is required. An input voltage VI in the range of 5.5 V VI 45 V is regulated to VQrated = 5 V within an accuracy of 2%.