5-V Low Drop Fixed Voltage Regulator TLE 4279 Features Output voltage tolerance 2% 150 mA current capability Very low current consumption Early warning Reset output low down to V = 1 V Q P-DSO-8-3, -6, -7, -8, -9 Overtemperature protection Reverse polarity proof Adjustable reset threshold Very low-drop voltage Wide temperature range Green Product (RoHS compliant) AEC Qualified Functional Description This device is an automotive suited voltage regulator with P-DSO-14-3, -8, -9, -11, 14 a fixed 5-V output, e.g. in a PG-DSO-8-16 package. The maximum operating voltage is 45 V. The output is able to drive 150 mA load. It is short circuit protected and the thermal shutdown switches the output off if the junction temperature is in excess of 150 C. A reset signal is generated for an output voltage of V < 4.65 V. The reset Q threshold voltage can be decreased by external connection of a voltage divider. The reset delay time can be set by an external capacitor. If the application requires pull-up resistors at the logic outputs (Reset, Sense Out) the TLE 4269 with integrated resistors can be used. It is also possible to supervise the input voltage by using an integrated comparator to give a low voltage warning. Type Package TLE 4279 G PG-DSO-8-16 TLE 4279 GM PG-DSO-14-30 Data Sheet 1 Rev. 2.4, 2007-03-20 TLE 4279 PG-DSO-8-16 1 8 Q S 2 7 SO RADJ 3 6 RO D54 GND AEP01668 Figure 1 Pin Configuration (top view) Table 1 Pin Definitions and Functions (TLE 4279 G) Pin No. Symbol Function 1I Input block to GND directly at the IC with a ceramic capacitor 2SI Sense input if not needed connect to Q 3RADJ Reset threshold adjust if not needed connect to ground 4D Reset delay to select the delay time, connect to GND via external capacitor 5GND Ground 6RO Reset output open-collector output. Keep open, if not needed 7SO Sense output open-collector output. Keep open, if not needed 8Q 5-V output connect to GND with a 10 F capacitor, ESR < 10 Data Sheet 2 Rev. 2.4, 2007-03-20