TLE4251D Infineon

Low Drop Voltage Tracker TLE 4251 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 P-TO252-5-11 Wide temperature range: -40 C T 150 C j Output protected against short circuit Overtemperature protection Reverse polarity proof Green Product (RoHS compliant) AEC Qualified Functional Description The TLE 4251 is a monolithic integrated low drop voltage tracker in the very small SMD package PG-TO252-5-1. It P-TO263-5-1 is designed to supply e.g. sensors under the severe conditions of automotive applications. Therefore the device is equipped with additional protection functions against overload, 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%. The TLE 4251 can 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. Type Package TLE 4251 D PG-TO252-5-11 TLE 4251 G PG-TO263-5-1 Data Sheet 1 Rev. 2.9, 2007-03-20 TLE 4251 PG-TO263-5-1 PG-TO252-5-11 GND 1 5 1 5 EN ADJ Q I AEP02810 EN GND ADJ Q I AEP03119 Figure 1 Pin Configuration (top view) Table 1 Pin Definitions and Functions Pin No. Symbol Function 1I Input voltage 2EN Enable high-active input 3GND Ground 4ADJ Adjust connect directly to the reference or with a voltage divider to the reference (for reference-proportional output voltages, VQ<Vref).. 5Q Output voltage must be blocked by a capacitor C 22 F, ESR 3 to GND Q Data Sheet 2 Rev. 2.9, 2007-03-20