5-V Low Dropout Voltage Regulator

The TLE7270-2 is a monolithic integrated low dropout voltage Regulator for load currents up to 300 mA. An input voltage up to 42 V is regulated to VQ,nom = 5.0 V with a precision of ±2%. Due to its integrated reset circuitry featuring power on Timing and output voltage monitoring the IC is well suited as µ-controller supply. The sophisticated design allows to achieve stable operation even with ceramic output capacitors down to 470 nF. The device is designed for the harsh environment of automotive applications. Therefore it is protected against overload, short circuit and overtemperature conditions by the implemented output current limitation and the overtemperature shutdown circuit. The TLE7270-2 CAN be also used in all other applications requiring a stabilized 5 V voltage. Due to its ultra low quiescent current of typically 20 µA the TLE7270-2 is dedicated for use in applications permanently connected to VBAT. An integrated output sink current circuitry keeps the voltage at the Output pin Q below 5.5 V even in case of occuring reverse currents. Thus connected devices are protected from overvoltage damage. For applications requiring extremely low noise levels the Infineon voltage Regulator family TLE 42XX and TLE 44XX is more suited than the TLE7270-2. A mV- range output noise on the TLE7270-2 caused by the Charge Pump operation is unavoidable due to the ultra low quiescent current concept. By Infineon Technologies Corporation