LM2672MX-ADJEP NSC [National Semiconductor], LM2672MX-ADJEP Datasheet
LM2672MX-ADJEP
Related parts for LM2672MX-ADJEP
LM2672MX-ADJEP Summary of contents
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... To simplify the LM2672EP buck regulator design procedure, there exists computer design software, LM267X Made Simple version 6.0. Ordering Information PART NUMBER LM2672MX-ADJEP (Notes 1, 2) SIMPLE SWITCHER ® registered trademark of National Semiconductor Corporation. Windows ® ...
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... Note 1: For the following (Enhanced Plastic) versions, check for availability: LM2672LD-12EP, LM2672LD-3.3EP, LM2672LD-5.0EP, LM2672LD-ADJEP, LM2672LDX-12EP, LM2672LDX-3.3EP, LM2672LDX-5.0EP, LM2672LDX-ADJEP, LM2672M-12EP, LM2672M-3.3EP, LM2672M-5.0EP, LM2672M-ADJEP, LM2672MX-12EP, LM2672MX-3.3EP, LM2672MX-5.0EP, LM2672N-12EP, LM2672N-3.3EP, LM2672N-5.0EP, LM2672N-ADJEP. Parts listed with an "X" are provided in Tape & Reel and parts without an "X" are in Rails. ...
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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. Supply Voltage ON/OFF Pin Voltage Switch Voltage to Ground Boost Pin Voltage Feedback Pin Voltage ESD Susceptibility Human Body ...
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LM2672-ADJEP (Continued) Symbol Parameter η Efficiency V = 12V All Output Voltage Versions Specifications with standard type face are for T Range. Unless otherwise specified, V and I = 100 mA. LOAD Symbol Parameters DEVICE PARAMETERS I Quiescent ...
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Typical Performance Characteristics Normalized Output Voltage Efficiency Switch Current Limit 20097803 20097805 20097807 5 Line Regulation 20097804 Drain-to-Source Resistance 20097806 Operating Quiescent Current 20097808 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) 20097809 20097811 20097813 6 ON/OFF Threshold Voltage 20097810 Switching Frequency 20097812 Peak Switch Current 20097814 ...
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Typical Performance Characteristics Dropout Voltage — 3.3V Option Block Diagram * Patent Number 5,514,947 † Patent Number 5,382,918 (Continued) Dropout Voltage — 5.0V Option 20097815 FIGURE 1. Block Diagram 7 20097816 20097817 www.national.com ...
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Test Circuit and Layout Guidelines (Circuit of Figure 2) Continuous Mode Switching Waveforms V = 20V 5V OUT µ µF, C OUT A: V Pin Voltage, 10 V/div ...
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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 C ...
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LM2672EP 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 regulators. LM267X Made Simple version ...
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LM2672EP Series Buck Regulator Design Procedure (Fixed Output) (Continued) PROCEDURE (Fixed Output Voltage Version) The capacitor list contains through-hole electrolytic capacitors from four different capacitor manufacturers and surface mount tantalum capacitors from two different capacitor manufacturers recommended that ...
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LM2672EP Series Buck Regulator Design Procedure (Fixed Output) (Continued) PROCEDURE (Fixed Output Voltage Version) 4. Input Capacitor ( low ESR aluminum or tantalum bypass capacitor is needed between the input pin and ground to prevent large voltage ...
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LM2672EP Series Buck Regulator Design Procedure (Fixed Output) (Continued) PROCEDURE (Fixed Output Voltage Version) 7. Frequency Synchronization (optional) The LM2672EP (oscillator) can be synchronized to run with an external oscillator, using the sync pin (pin 3). By doing so, the ...
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Inductor Manufacturers’ Part Numbers 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 ...
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Inductor Manufacturers’ Part Numbers 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 ...
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Inductor Manufacturers’ Part Numbers 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 (Continued) 1A Diodes 3A Diodes V Surface Through Surface R ...
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Inductor Manufacturers’ Part Numbers FIGURE 15. Recommended Application Voltage for AVX TPS and Sprague 594D Tantalum Chip Capacitors Derated for 85˚C. LM2672EP Series Buck Regulator Design Procedure (Adjustable Output) PROCEDURE (Adjustable Output Voltage Version) To simplify the buck regulator design ...
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LM2672EP 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 ...
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LM2672EP Series Buck Regulator Design Procedure (Adjustable Output) (Continued) PROCEDURE (Adjustable Output Voltage Version) 4. Catch Diode Selection (D1 normal operation, the average current of the catch diode is the load current times the catch diode duty cycle, ...
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LM2672EP Series Buck Regulator Design Procedure (Adjustable Output) (Continued) Case Output Style (Note 10) 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 ...
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LM2672EP 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 ...
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Application Information TYPICAL SURFACE MOUNT PC BOARD LAYOUT, FIXD 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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Application Information LLP PACKAGE DEVICES The LM2672EP may be 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 ...
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Physical Dimensions 8-Lead (0.150" Wide) Molded Small Outline Package, JEDEC www.national.com inches (millimeters) unless otherwise noted NS Package Number M08A 8-Lead (0.300" Wide) Molded Dual-In-Line Package NS Package Number N08E 24 ...
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Physical Dimensions 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. ...