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TPS76301, TPS76316, TPS76318, TPS76325, TPS76327
TPS76328, TPS76330, TPS76333, TPS76338, TPS76350
LOW POWER 150 mA LOW DROPOUT LINEAR REGULATORS
SLVS181H − DECEMBER 1998 − REVISED JANUARY 2004
APPLICATION INFORMATION
regulator protection
The TPS763xx pass element has a built-in back diode that safely conducts reverse currents when the input voltage drops
below the output voltage (e.g., during power down). Current is conducted from the output to the input and is not internally
limited. If extended reverse voltage is anticipated, external limiting might be appropriate.
The TPS763xx also features internal current limiting and thermal protection. During normal operation, the TPS763xx limits
output current to approximately 800 mA. When current limiting engages, the output voltage scales back linearly until the
overcurrent condition ends. While current limiting is designed to prevent gross device failure, care should be taken not to
exceed the power dissipation ratings of the package. If the temperature of the device exceeds 165°C, thermal-protection
circuitry shuts it down. Once the device has cooled down to below 140°C, regulator operation resumes.
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