Infineon Technologies OPTIREG™ Linear TLE4263-2Gx Voltage Regulators are monolithic integrated very low dropout voltage regulators in an SMD PG-DSO-8 or PG-DSO-14 package, specially designed for automotive applications. An input voltage up to 45V is regulated to an output voltage of 5.0V. The Infineon OPTIREG™ Linear TLE4263-2Gx Voltage Regulators drive loads up to 180mA. These ICs are short-circuit-proof due to the implemented current limitation and have an integrated overtemperature shutdown. These regulators feature power-on and undervoltage reset with an adjustable reset threshold, a watchdog circuit for monitoring a connected microcontroller, and an inhibit input for enabling or disabling the component. The reset output is set to “low” in case the output voltage falls below the reset switching threshold. This threshold can be decreased to 3.5V by an external resistor divider. The power-on reset delay time can be programmed by the external delay capacitor. A watchdog circuit provides a monitoring function for microcontrollers; when at missing pulses on the watchdog’s input, the reset output is set to “low”. The trigger time for the watchdog pulses can be set by the external capacitor. The IC can be switched off by the inhibit input, reducing the current consumption to 0mA typically.
