LM2937 National Semiconductor, LM2937 Datasheet
LM2937
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LM2937 Summary of contents
Page 1
... As with most low dropout regulators, the ESR of this ca- pacitor remains a critical design parameter, but the LM2937 includes special compensation circuitry that relaxes ESR re- quirements. The LM2937 is stable for all ESR below 3 . This allows the use of low ESR chip capacitors. Ideally suited for automotive applications, the LM2937 will ...
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... LM2937ET-5.0 −40˚C T 85˚C LM2937IMP-5.0 J LM2937IMPX-5.0 LM2937IMPX-8.0 SOT-223 Package L71B Markings The small physical size of the SOT-223 package does not allow sufficient space to provide the complete device part number. The actual devices will be labeled with the package markings shown. www.national.com ...
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... OUTmax V 26V 5V 150 20 0.5 1.0 110 250 1.0 0.6 = 100 100 −30 − 100 −75 − (Note 1) LM2937ES −40˚C T −40˚C =400mA for the SOT-223 pack- OUTmax 8V 10V Typ Limit Typ Limit 7.76 9.70 8.00 7.60 10.00 9.50 8.24 10.30 8.40 10. 100 100 ...
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... A JA and the electrical specifications do not apply. If the die temperature rises above 150˚C, the LM2937 will go into thermal shutdown. For the LM2937, the junction-to-ambient thermal resistance is 65˚C/W, for the TO-220 package, 73˚C/W for the TO-263 package, and 174˚C/W for the SOT-223 package. When used ...
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Typical Performance Characteristics Dropout Voltage vs Output Current DS011280-7 Quiescent Current vs Temperature DS011280-10 Line Transient Response DS011280-13 Output Impedance DS011280-16 Dropout Voltage vs Temperature DS011280-8 Quiescent Current vs Input Voltage DS011280-11 Load Transient Response DS011280-14 Maximum Power Dissipation (TO-220) ...
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Typical Performance Characteristics Low Voltage Behavior DS011280-19 Output at Voltage Extremes DS011280-22 Peak Output Current DS011280-25 * Required if the regulator is located more than 3 inches from the power supply filter capacitors Required for stability. C must ...
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Application Hints EXTERNAL CAPACITORS The output capacitor is critical to maintaining regulator stabil- ity, and must meet the required conditions for both ESR (Equivalent Series Resistance) and minimum amount of ca- pacitance. MINIMUM CAPACITANCE: The minimum output capacitance required to ...
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Application Hints (Continued) is specified numerically by the heatsink manufacturer (H−A) in the catalog, or shown in a curve that plots temperature rise vs power dissipation for the heatsink. HEATSINKING TO-263 AND SOT-223 PACKAGE PARTS Both the TO-263 (“S”) and ...
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... Physical Dimensions inches (millimeters) unless otherwise noted Plastic Package Order Number LM2937ET-5.0, LM2937ET-8.0, LM2937ET-10, LM2937ET-12, or LM2937ET-15 NS Package Number T03B 9 www.national.com ...
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... Physical Dimensions Order Number LM2937ES-5.0, LM2937ES-8.0, LM2937ES-10, LM2937ES-12 or LM2937ES-15 www.national.com inches (millimeters) unless otherwise noted (Continued) TO-263 3-Lead Plastic Surface Mount Package NS Package Number TS3B 10 ...
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... Physical Dimensions Order Number LM2937IMP-5.0, LM2937IMP-8.0, LM2937IMP-10, LM2937IMP-12 or LM2937IMP-15 LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1 ...