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Low Dropout Voltage Tracking RegulatorTLE4254

Feature Overview •70 mA output current capability•Tight output tracking tolerance to reference•Output voltage adjustable down to 2.0 V •Stable operation with 1 µF ceramic output capacitor•Flexibility of output voltage adjust higher or lower than reference, proportional to the reference voltage (version GA)•Status output to indicate short circuits at the output (version GS)•Very low dropout voltage of typ. 0.2 V @ maximum output current•Combined reference / enable input•Very low current consumption in OFF mode •Wide input voltage range -20 V ≤ PG-DSO-8-10

V

I ≤ +45 V•Wide temperature range: -40 °C ≤

T

j ≤ 150 °C•Output protected against short circuit to GND and battery•Input protected against reverse polarity•Overtemperature protection•Green product (RoHS compliant) •AEC qualified Functional Description The TLE4254 is a monolithic integrated low-dropout voltage tracking regulator in a small PG-DSO-8 package. TheIC is designed to supply off-board systems, e.g. sensors in powertrain management systems under the severeconditions of automotive applications. Therefore, the IC is equipped with additional protection functions againstreverese polarity and short circuit to GND and battery.With supply voltages up to 40V, the output voltage follows a reference voltage applied at the adjust input with veryhigh accuracy. The reference voltage applied directly to the adjust input or by an e.g. external resistor divider canbe 2.0V at minimum. The output is able to drive loads up to 70 mA while the device follows with high accuracy the e.g. 5V output of amain voltage regulator acting as reference.The TLE4254 can be set into shutdown mode in order to reduce the current consumption to a minimum. This suitsthe IC for low power battery applications.Version “GS” offers an open collector status output indicating an overvoltage and undervoltage error condition ofthe output voltage.Version “GA” allows setting the output voltage to higher value than the reference voltage by connecting a voltagedivider to the feedback pin “FB”. TypePackage TLE4254GA PG-DSO-8-10 (RoHS compliant) TLE4254GS PG-DSO-8-10 (RoHS compliant) Data Sheet 1Rev. 1.0, 2006-11-22