TLE4287G

TLE4287G 5-V Voltage Regulator Data Sheet Rev. 1.41, 2012-01-30 Automotive Power 5-V Voltage Regulator TLE4287G Features Output voltage tolerance ≤ ±2% Very low standby current consumption Input voltage up to 42 V Reset function down to 1 V output voltage Adjustable reset time On/Off logic Overtemperature protection Reverse polarity protection Short-circuit proof Very wide temperature range Very small output capacitor Green Product (RoHS compliant) AEC Qualified Functional Description The TLE4287G is a monolithic integrated 5 V voltage regulator in PG-DSO-14 package. It supplies an output current IQ > 250 mA. The IC is short circuit proof and incorporates temperature protection which turns off the device at overtemperature. The input voltage VI is regulated in the range of 7.5 V < VI < 40 V to VQ,nom = 5 V. Therefore a reference voltage, which is kept highly accurate by resistance adjustment, is compared via a control amplifier to a voltage that is proportional to the output voltage. The control amplifier drives the base of the series transistor by a buffer. A comparator in the reset-generator block compares a reference voltage that is independent of the input voltage to the scaled-down output voltage. In the case of an output voltage VQ < 4.5 V the reset delay capacitor is discharged and a reset signal is generated by setting the reset output LOW. The reset delay time can be set by choosing the external capacitor over a wide range. When the outpu...