TLE4470 Datasheet | Siemens Semiconductor Group

Features - - - - - - - - - - - - - Stand-by output 180 m A; 5 V ± 2 % Adjustable reset switching threshold Main output 350 m A; tracked to the stand-by output Low quiescent current consumption in standby mode Disable function for main output Wide operation range: up to 45 V Very low dropout Power-On-Reset circuit sensing the stand-by voltage Early warning parator for supply undervoltage Output protected against short circuit Wide temperature range: - 40 °C to 150 °C Over-temperature protection Over-load protection P-DSO-14-4 P-DSO-20-6 Type TLE 4470 GS TLE 4470 G Functional Description Ordering Code Q67006-A9309 Q67006-A9308 Package P-DSO-14-4 (SMD) P-DSO-20-6 (SMD) The TLE 4470 is a monolithic integrated voltage regulator with two very low-drop outputs, a main output Q2 for loads up to 350 m A and a stand by output Q1 providing a maximum of 180 m A. The device is available in both the P-DSO-14-4 and P-DSO-20-6 packages. It is designed to supply microprocessor systems under the severe conditions of automotive applications and is therefore equipped with additional protection functions against over load, short circuit and over temperature. Of course the TLE 4470 can also be used in other applications where two stabilized voltages are required. The device operates in the wide temperature range of - 40 °C to 150 °C. The stand by regulator transforms an input voltage VI in the range of 5.6 V ≤ VI ≤ 45 V to VQ1rated = 5 V within an accuracy of 2%, whereas the main regulator is adjustable. By use of an external voltage divider the main output voltage can be set to VQ2 ≥ 5 V for the Semiconductor Group 1 1998-11-01 TLE 4470 TLE 4470 G type (P-DSO-20-6 package). VQ1 is pared to the voltage at pin VA, which is proportional to the output voltage VQ2. A control amplifier drives the base of the series PNP transistor via a buffer. The main output voltage VQ2 is tracked to the accuracy of the stand by output. For the TLE 4470 GS (P-DSO-14-4 package) the output voltage is...