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LM2937IMP-2.5 Datasheet(PDF) 5 Page - Texas Instruments |
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LM2937IMP-2.5 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 19 page LM2937-2.5, LM2937-3.3 www.ti.com SNVS015E – FEBRUARY 1998 – REVISED APRIL 2013 Typical Performance Characteristics (continued) Line Transient Response Load Transient Response Figure 11. Figure 12. Ripple Rejection Output Impedance Figure 13. Figure 14. Maximum Power Dissipation (TO-220) Maximum Power Dissipation (DDPAK/TO-263) (1) Figure 15. Figure 16. (1) The maximum allowable power dissipation at any ambient temperature is PMAX = (125 − TA)/θJA, where 125 is the maximum junction temperature for operation, TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance. If this dissipation is exceeded, the die temperature will rise above 125°C and the electrical specifications do not apply. If the die temperature rises above 150°C, the regulator will go into thermal shutdown. The junction-to-ambient thermal resistance θJA is 65°C/W, for the TO-220 package, 73°C/W for the DDPAK/TO-263 package, and 174°C/W for the SOT-223 package. When used with a heatsink, θJA is the sum of the device junction-to-case thermal resistance θJC of 3°C/W and the heatsink case-to-ambient thermal resistance. If the DDPAK/TO-263 or SOT-223 packages are used, the thermal resistance can be reduced by increasing the P.C. board copper area thermally connected to the package (see Application Hints for more information on heatsinking). Copyright © 1998–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM2937-2.5 LM2937-3.3 |
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