Dual Low Drop Voltage Regulator TLE 4473 GV53 TLE 4473 GV52 Features Output 1: 300 mA, 3.3 V (3%) or 2.6 V (3%) Output 2: 180 mA, 5 V (2%) Low quiescent current consumption Disable function separately for both outputs Wide operation range: up to 42 V Very low dropout voltage 2 independent reset circuits Watchdog Output protected against short circuit Wide temperature range: -40 C to 150 C Overtemperature protection Overload protection Functional Description The TLE 4473 is a monolithic integrated voltage regulator with two very low-drop outputs, Q1 for loads up to 300 mA and Q2 providing a maximum of 180 mA. An input voltage in the range of 5.6 V V 45 V is transformed to V = 5.0 V (2%) and I Q2 V =3.3 V 3% (TLE 4473 GV53) or V = 2.6 V 3% (TLE 4473 GV52). The device is Q1 Q1 also available with dual 5 V output voltage, please refer to the TLE 4473 GV55 data sheet. Two inhibit pins allow a flexible power management. Both outputs can independently be enabled or disabled. Thus the current consumption of the application can be reduced to a minimum. The quiescent current of the TLE 4473 with both outputs disabled is < 1 A. The TLE 4473 is designed to supply microprocessor systems and sensors under the severe conditions of automotive applications and is therefore equipped with additional protection functions against overload, short circuit and overtemperature. The device operates in the wide junction temperature range of -40 C to 150 C. Type Package TLE 4473 GV53 PG-DSO-12 TLE 4473 GV52 PG-DSO-12 Data Sheet 1 Rev. 1.1, 2008-09-19 TLE 4473 GV53 TLE 4473 GV52 The low drop regulator features a reset with adjustable power on delay for each of the outputs. In addition the output for the microcontroller supply comes up with a watchdog in order to supervise a microcontroller. TLE 4473 GV53 / TLE 4473 GV52 e. g. C I/O 7 I Q2 4 V or Sensor Bat 10 Supply F Overtemperature 4.7 k Current and Shutdown Saturation Control, Bandgap RO2 2 Overcurrent Reset Reference Protection Generator 1 D2 10 9 INH2 C Inhibit 100 nF Q1 5 C Core Supply 22 F or 10 F 4.7 k Current and Saturation Reset RO1 3 C Control, Generator Reset Overcurrent Protection WI 1 Watchdog 8 INH1 Watchdog Inhibit Ignition (from C) D1 11 100 nF 6, 12 GND AEB03507.VSD Figure 1 Block Diagram with Typical External Components Data Sheet 2 Rev. 1.1, 2008-09-19