lm5000sdx-6ep National Semiconductor Corporation, lm5000sdx-6ep Datasheet
lm5000sdx-6ep
Related parts for lm5000sdx-6ep
lm5000sdx-6ep Summary of contents
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... Note 1: For the following (Enhanced Plastic) version, check for availability: LM5000-3MTCXEP, LM5000SD-3EP, LM5000SD-6EP, LM5000SDX-3EP, LM5000SDX-6EP. Parts listed with an "X" are provided in Tape & Reel and parts without an "X" are in Rails. Note 2: FOR ADDITIONAL ORDERING AND PRODUCT INFORMATION, PLEASE VISIT THE ENHANCED PLASTIC WEB SITE AT: www.national.com/ ...
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Typical Application Circuit Connection Diagram www.national.com LM5000EP Flyback Converter Top View 20098304 2 20098301 ...
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Pin Description Pin Name 1 COMP Compensation network connection. Connected to the output of the voltage error amplifier. The RC compenstion network should be connected from this pin to AGND. An additional 100pF high frequency capacitor to AGND is recommended. ...
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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 Voltage FB Voltage COMP Voltage All Other Pins Maximum Junction Temperature Power Dissipation(Note 5) Lead Temperature ...
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Electrical Characteristics Specifications in standard type face are for T ture Range (T = −40˚C to +125˚C) Unless otherwise specified Symbol Parameter Thermal Resistance θ JA Note 4: Absolute maximum ratings are limits beyond which damage to the ...
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Typical Performance Characteristics Iq (non-switching (switching Temperature fb www.national.com @ f = 300kHz Iq (non-switching 20098320 f = 300kHz SW 20098322 20098324 700kHz ...
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Typical Performance Characteristics Current Limit vs Temperature f vs Low (- vs. Temperature @ FS = Low (-3) SW (Continued) Current Limit vs V 20098326 f vs 20098328 f vs. Temperature ...
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Typical Performance Characteristics f vs. Temperature @ SW Error Amp. Transconductance vs Temp. www.national.com (Continued Low (-6) f 20098374 20098332 8 vs. Temperature @ FS = OPEN (-6) SW 20098375 BYP Pin Voltage 20098333 ...
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FIGURE 1. 300 kHz operation, 48V output FIGURE 2. 700 kHz operation, 48V output 9 20098353 20098354 www.national.com ...
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Block Diagram Boost Regulator Operation The LM5000EP utilizes a PWM control scheme to regulate the output voltage over all load conditions. The operation can best be understood referring to the block diagram and Figure the start of ...
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Operation FIGURE 3. Simplified Boost Converter Diagram (a) First Cycle of Operation (b) Second Cycle Of Operation CONTINUOUS CONDUCTION MODE The LM5000EP is a current-mode, PWM regulator. When used as a boost regulator the input voltage is stepped up to ...
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Operation (Continued) The LM5000EP is a current mode PWM regulator. The signal flow of this control scheme has two feedback loops, one that senses switch current and one that senses output voltage. To keep a current programmed control converter stable ...
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Operation (Continued) where I is the maximum load current. LOAD SELECTING THE COMPENSATION COMPONENTS The first step in selecting the compensation components R and set a dominant low frequency pole in the control C loop. Simply choose ...
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Operation (Continued) at the switch pin is caused by the output diode capacitance and the transformer leakage inductance forming a resonant circuit at the secondary(ies). The resonant circuit generates the “ringing” voltage, which gets reflected back through the transformer to ...
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Flyback Regulator Operation ITEM PART NUMBER C 1 C4532X7R2A105MT C 2 C4532X7R2A105MT C 3 C1206C224K5RAC C 4 C1206C104K5RAC C 5 C1206C104K5RAC C 6 C1206C101K1GAC C 7 C1206C104K5RAC C 8 C4532X7S0G686M C 9 C4532X7S0G686M C 10 C1206C221K1GAC C 11 C1206C102K5RAC D ...
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ITEM PART NUMBER T 1 A0009 CRCW12064992F R 2 CRCW12061001F R 3 CRCW12061002F R 4 CRCW12066191F R 5 CRCW120610R0F R 6 CRCW12062003F R 7 CRCW12061002F Q 1 CXT5551-NSA U 1 LM5000-3EP www.national.com DESCRIPTION Coilcraft, Transformer Resistor Resistor Resistor ...
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Physical Dimensions inches (millimeters) unless otherwise noted TSSOP-16 Pin Package (MTC) NS Package Number MTC16 LLP-16 Pin Package (SDA) NS Package Number SDA16A 17 www.national.com ...
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... 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. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...