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LM2990 Datasheet(PDF) 11 Page - Texas Instruments |
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LM2990 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 24 page LM2990 www.ti.com 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 Submit Documentation Feedback 11 Product Folder Links: LM2990 |
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