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LM2990 Datasheet(PDF) 11 Page - Texas Instruments

No. de pieza LM2990
Descripción Electrónicos  LM2990 Negative Low-Dropout Regulator
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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LM2990 Datasheet(HTML) 11 Page - Texas Instruments

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LM2990
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SNVS093G – JUNE 1999 – REVISED MAY 2015
Feature Description (continued)
7.3.4 Thermal Protection
The device contains a thermal shutdown protection circuit to turn off the output current when excessive heat is
dissipated in the LDO. The thermal time-constant of the semiconductor die is fairly short, and thus the output
cycles on and off at a high rate when thermal shutdown is reached until the power dissipation is reduced. The
internal protection circuitry of the device is designed to protect against thermal overload conditions. The circuitry
is not intended to replace proper heat sinking. Continuously running the device into thermal shutdown degrades
its reliability.
7.4 Device Functional Modes
7.4.1 Operation with VOUT(TARGET) –5 V ≥ VIN > –26 V
The device operates if the input voltage is within VOUT(TARGET) –5 V to –26 V range. At input voltages beyond the
VIN requirement, the devices do not operate correctly, and output voltage may not reach target value.
Copyright © 1999–2015, Texas Instruments Incorporated
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