LM2675-5.0EVAL National Semiconductor, LM2675-5.0EVAL Datasheet
LM2675-5.0EVAL
Specifications of LM2675-5.0EVAL
*LM2675-5.0EVAL/NOPB
LM2675-5.0EVAL/NOPB
Related parts for LM2675-5.0EVAL
LM2675-5.0EVAL Summary of contents
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... Because of its very high efficiency ( per traces on the printed circuit board are the only heat sinking needed. A family of standard inductors for use with the LM2675 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs ...
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... LM2675MX-12 2675M-12 LM2675M-3.3 2675M-3.3 LM2675MX-3.3 2675M-3.3 LM2675M-5.0 2675M-5.0 LM2675MX-5.0 2675M-5.0 LM2675M-ADJ 2675M-ADJ LM2675MX-ADJ 2675M-ADJ LM2675N-12 LM2675N-12 LM2675N-3.3 LM2675N-3.3 LM2675N-5.0 LM2675N-5.0 LM2675N-ADJ LM2675N-ADJ 2 8-Lead Package Top View 01280302 SO-8/DIP Package Supplied as: 1000 Units on Tape and Reel 4500 Units on Tape and Reel ...
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... V = 12V LM2675-12 Symbol Parameter SYSTEM PARAMETERS Test Circuit Figure 2 (Note 3) V Output Voltage V = 15V to 40V, I OUT IN η Efficiency V = 24V LM2675-ADJ Symbol Parameter SYSTEM PARAMETERS Test Circuit Figure 3 (Note 3) V Feedback 40V Voltage V Programmed for 5V OUT (see Circuit of Figure 3) V Feedback V = 6.5V to 40V, I ...
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... Note 3: External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching regulator performance. When the LM2675 is used as shown in Figures 2, 3 test circuits, system performance will be as specified by the system parameters section of the Electrical Characteristics. ...
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Typical Performance Characteristics Normalized Output Voltage Efficiency Switch Current Limit 01280303 01280305 01280307 5 Line Regulation 01280304 Drain-to-Source Resistance 01280306 Operating Quiescent Current 01280308 www.national.com ...
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Typical Performance Characteristics Standby Quiescent Current ON/OFF Pin Current (Sourcing) Feedback Pin Bias Current www.national.com (Continued) 01280309 01280311 01280313 6 ON/OFF Threshold Voltage 01280310 Switching Frequency 01280312 Peak Switch Current 01280314 ...
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Typical Performance Characteristics Dropout Voltage — 3.3V Option Block Diagram * Active Inductor Patent Number 5,514,947 † Active Capacitor Patent Number 5,382,918 (Continued) Dropout Voltage — 5.0V Option 01280315 FIGURE 1. 7 01280316 01280317 www.national.com ...
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Typical Performance Characteristics Continuous Mode Switching Waveforms V = 20V 5V OUT µ µF, C OUT A: V Pin Voltage, 10 V/div Inductor Current, 0.5 A/div C: Output ...
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Test Circuit and Layout Guidelines µF, 50V Tantalum, Sprague “199D Series” µF, 25V Tantalum, Sprague “595D Series” OUT D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F µH Sumida # RCR110D-680L ...
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... LM2675 Series Buck Regulator Design Procedure (Fixed Output) PROCEDURE (Fixed Output Voltage Version) To simplify the buck regulator design procedure, National Semiconductor is making available computer design software to be used with the SIMPLE SWITCHER line of switching regulators. LM267X Made Simple version 6.0 is available on Windows ® ...
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... However, if the power supply design must withstand a continuous output short, the diode should have a current rating equal to the maximum current limit of the LM2675. The most stressful condition for this diode is a shorted output condition. B. The reverse voltage rating of the diode should be at least 1 ...
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... LM2675 Series Buck Regulator Design Procedure (Fixed Output) PROCEDURE (Fixed Output Voltage Version) A low ESR aluminum or tantalum bypass capacitor is needed between the input pin and ground to prevent large voltage transients from appearing at the input. This capacitor should be located close to the IC using short leads. In addition, the RMS ...
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... LM2675 Series Buck Regulator Design Procedure (Fixed Output) Inductor Value Selection Guides (For Continuous Mode Operation) FIGURE 4. LM2675-3.3 FIGURE 5. LM2675-5.0 01280326 FIGURE 6. LM2675-12 01280327 FIGURE 7. LM2675-ADJ 13 (Continued) 01280328 01280329 www.national.com ...
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... LM2675 Series Buck Regulator Design Procedure (Fixed Output) Ind. Inductance Current Ref. Through (µH) (A) Desg. Hole L4 68 0.32 67143940 67144310 L5 47 0.37 67148310 67148420 L6 33 0.44 67148320 67148430 L7 22 0.52 67148330 67148440 L9 220 0.32 67143960 67144330 L10 150 0.39 67143970 67144340 ...
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... LM2675 Series Buck Regulator Design Procedure (Fixed Output) Surface Mount Output Inductance Voltage Sprague (µH) (V) 594D Series (µF/V) 22 120/6.3 33 120/6.3 47 68/10 3.3 68 120/6.3 100 120/6.3 150 120/6.3 22 100/16 33 68/10 47 68/10 5.0 68 100/16 100 100/16 150 100/16 22 120/20 33 68/25 47 47/ 47/20 100 ...
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... LM2675 Series Buck Regulator Design Procedure (Fixed Output) 20V 30V 40V 50V International Rectifier Corp. Motorola, Inc. General Instruments Corp. Diodes, Inc. FIGURE 14. RMS Current Ratings for Low ESR Electrolytic Capacitors (Typical) www.national.com 1A Diodes 3A Diodes V Surface Through Surface R Mount Hole Mount ...
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... LM2675 Series Buck Regulator Design Procedure (Fixed Output) LM2675 Series Buck Regulator Design Procedure (Adjustable Output) PROCEDURE (Adjustable Output Voltage Version) To simplify the buck regulator design procedure, National Semiconductor is making available computer design software to be used with the SIMPLE SWITCHER line of switching regulators ...
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... LM2675 Series Buck Regulator Design Procedure (Adjustable Output) (Continued) PROCEDURE (Adjustable Output Voltage Version) 2. Inductor Selection (L1) A. Calculate the inductor Volt • microsecond constant E • • µs), from the following formula: where V = internal switch saturation voltage = 0.25V and V SAT = diode forward voltage drop = 0.5V B. Use the E • ...
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... However, if the power supply design must withstand a continuous output short, the diode should have a current rating greater than the maximum current limit of the LM2675. The most stressful condition for this diode is a shorted output condition. B. The reverse voltage rating of the diode should be at least 1 ...
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... LM2675 Series Buck Regulator Design Procedure (Adjustable Output) (Continued) Case Output Style (Note 7) Voltage (V) SM and TH 1.21–2.50 SM and TH 2.50–3.75 SM and TH 3.75–5.0 SM and TH 5.0–6.25 SM and TH 6.25–7.5 SM and TH 7.5–10.0 SM and TH 10.0–12.5 SM and TH 12.5–15.0 SM and TH 15.0–20.0 SM and TH 20.0– ...
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... LM2675 Series Buck Regulator Design Procedure (Adjustable Output) (Continued) Surface Mount Cap. Sprague AVX TPS Ref. Desg. 594D Series Series # (µF/V) (µF/V) C1 120/6.3 100/10 C2 120/6.3 100/10 C3 120/6.3 100/10 C4 68/10 100/10 C5 100/16 100/10 C6 100/16 100/10 C7 68/10 100/10 C8 100/16 100/10 C9 100/16 100/16 C10 ...
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Application Information TYPICAL SURFACE MOUNT PC BOARD LAYOUT, FIXED OUTPUT (4X SIZE µF, 50V, Solid Tantalum Sprague, “594D series” µF, 16V, Solid Tantalum Sprague, “594D series” OUT D1 - 1A, 40V Schottky Rectifier, ...
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... IC, and route the wiring away from the inductor, especially an open core type of inductor. LLP PACKAGE DEVICES The LM2675 is offered in the 16 lead LLP surface mount package to allow for increased power dissipation compared to the SO-8 and DIP. The Die Attach Pad (DAP) can and should be connected to (Continued) PCB Ground plane/island ...
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... Physical Dimensions unless otherwise noted 8-Lead (0.150" Wide) Molded Small Outline Package, JEDEC www.national.com inches (millimeters) Order Number LM2675M-3.3, LM2675M-5.0, LM2675M-12 or LM2675M-ADJ NS Package Number M08A 24 ...
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... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 8-Lead (0.300" Wide) Molded Dual-In-Line Package Order Number LM2675N-3.3, LM2675N-5.0, LM2675N-12 or LM2675N-ADJ NS Package Number N08E 25 www.national.com ...
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... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...