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PS72501 Datasheet(PDF) 10 Page - Texas Instruments |
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PS72501 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 29 page V O V I OUT RESET 10kW GND EN IN TPS725xx 1 mF C O TPS72501 TPS72515, TPS72516 TPS72518, TPS72525 SLVS341E – MAY 2002 – REVISED JUNE 2010 www.ti.com Figure 19. TPS72501 Fixed Output Typical Application Diagram Table 1. Output Voltage Programming Guide (Standard 1% Resistor Values) PROGRAM VOLTAGE R1 (k Ω) R2 (k Ω) ACTUAL VOLTAGE 1.8 V 56.2 118 1.801 2.5 V 127 121 2.5 3.3 V 196 115 3.299 3.6 V 205 105 3.602 Regulator Protection The TPS725xx pass element has a built-in back diode that safely conducts reverse current 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 TPS725xx also features internal current limiting and thermal protection. During normal operation, the TPS725xx limits output current to approximately 1.6 A. 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 145°C, regulator operation resumes. 10 Submit Documentation Feedback Copyright © 2002–2010, Texas Instruments Incorporated Product Folder Link(s): TPS72501 TPS72515 TPS72516 TPS72518 TPS72525 |
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