LM2991T/NOPB National Semiconductor, LM2991T/NOPB Datasheet
LM2991T/NOPB
Specifications of LM2991T/NOPB
*LM2991T/NOPB
LM2991T
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LM2991T/NOPB Summary of contents
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... Must be at least a 10 μF aluminum electrolytic μF solid tantalum to maintain stability. May be increased without bound to maintain regulation during transients. Locate the capacitor as close as possible to the regulator. The equivalent series resistance (ESR) is critical, and should be less than 10Ω over the same operating temperature range as the regulator. © 2010 National Semiconductor Corporation LM2991 Features ■ ...
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Connection Diagrams Front View TO-220, 5-Lead, Straight See NS Package Number T05A Top View 16-Lead, Ceramic, Dual-in-Line See NS Package Number J16A Ordering Information Order Number Package Type LM2991S 5-Lead TO-263 LM2991SX 5-Lead TO-263 LM2991T 5-Pin TO-220 LM2991T / LB03 ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage ESD Susceptibility (Note 2) Power Dissipation (Note 3) Electrical Characteristics = 47 μ 2.7 kΩ −10V −3V 1A entire operating junction temperature range. Parameter ≤ ...
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Typical Performance Characteristics Dropout Voltage Output Voltage Quiescent Current www.national.com Normalized Output Voltage 1126013 Output Noise Voltage 1126015 Maximum Output Current 1126017 4 1126014 1126016 1126018 ...
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Line Transient Response 1126019 Maximum Output Current 1126021 Output Impedance 1126023 Load Transient Response Ripple Rejection ON /OFF Control Voltage 5 1126020 1126022 1126024 www.national.com ...
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Adjust Pin Current Maximum Power Dissipation (TO-220) www.national.com Low Voltage Behavior 1126025 Maximum Power Dissipation (TO-263) (See Note 3) 1126027 6 1126026 1126028 ...
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Application Hints EXTERNAL CAPACITORS Like any low-dropout regulator, external capacitors are re- quired to stabilize the control loop. These capacitors must be correctly selected for proper performance. INPUT CAPACITOR An input capacitor is required if the regulator is located more ...
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Typical Applications www.national.com FIGURE 2. Fully Isolated Post-Switcher Regulator FIGURE 3. Adjustable Current Sink 8 1126006 1126010 ...
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Equivalent Schematic 9 www.national.com ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 5-Lead T0-220, Straight Leads (T) Order Number LM2991T NS Package Number T05A 5-Lead T0-220, Bent, Staggered Leads (T) Order Number LM2991T Flow LBO3 NS Package Number T05D 10 ...
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TO-263 5-Lead Plastic Surface Mount Package Ordering Number LM2991S NS Package Number TS5B 16-Lead Ceramic Dual-in-Line Package Order Number LM2991J-QMLV 5962-9650501VEA Order Number LM2991J-QML 5962-9650501QEA NS Package Number J16A 11 www.national.com ...
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Ceramic Surface-Mount Package Order Number LM2991WG-QML 5962-9650501QXA NS Package Number WG16A 12 ...
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Notes 13 www.national.com ...
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