Low Drop Voltage Tracker
●Functional Description
●TheTLE 4251is a monolithic integrated low-drop voltage tracker in the very small SMD
●package P-TO252-5-1. It is designed to supply e.g. sensors under the severe conditions
●of automotive applications. Therefore the device is equipped with additional protection
●functions against over load, short circuit and reverse polarity.
●Supply voltages up to 40 V are tracked to a reference voltage given to the adjust input
●via an external resistor. The output is able to drive loads up to 400 mA while it follows e.g. the 5 V output of a main voltage regulator within an accuracy of 0.5%. For loads up to 300 mA the tracking accuracy is 0.2%.
●TheTLE 4251can be switched in stand-by mode via the enable EN input which causes the current consumption to drop to very low values. This feature makes the IC suitable for low power battery applications.
●Features
●• Output tracking tolerance≤ ±0.2%
●• 400 mA output current capability
●• Enable Function
●• Very low current consumption in OFF mode
●• Wide operation range: up to 40 V
●• Wide temperature range: – 40°C≤Tj ≤ 150°C
●• Output protected against short circuit
●• Overtemperature protection
●• Reverse polarity proof
