TLE4473G V55-2 英飞凌芯片 INFINEON 中文版规格书手册.pdf
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Type Package Marking
TLE 4473 GV55-2 PG-DSO-12-11 (RoHS compliant) TLE4473 GV55-2
Dual Low Dropout Voltage Regulator
TLE 4473 GV55-2
PG-DSO-12-11
Data Sheet 1 Rev. 1.2, 2008-10-28
Features
• Stand-by output 190 mA; 5 V ± 2%
• Main output: 300 mA, 5 V
tracked to the stand-by output
• 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
• Green product (RoHS compliant)
• AEC qualified
Functional Description
The TLE 4473 is a monolithic integrated voltage regulator with two low dropout outputs,
a main output Q1 for loads up to 300 mA and a stand by output Q2 providing a maximum
of 190 mA. The stand-by regulator transforms an input voltage
V
I
in the range of 5.6 V ≤
V
I
≤ 42 V to an output voltage of V
Q2
= 5.0 V (±2%). The main output is tracked to the
stand by output voltage and provides also 5 V. A versions of this device with 5 V/3.3 V
and 5 V/2.6 V are also available, please refer to the data sheet TLE 4473 G V53/
TLE 4473 G V52. The Inhibit input INH1 disables the output Q1 only, whereas Inhibit
input INH2 disables both, Q1 and Q2 output. The quiescent current then is 1 µA.
The TLE 4473 is designed to supply microprocessor systems and sensors under the
severe conditions of automotive applications and therefore is 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.
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