lm5000sdx-6 National Semiconductor Corporation, lm5000sdx-6 Datasheet
lm5000sdx-6
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lm5000sdx-6 Summary of contents
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... Grounded) or 700kHz (FS Open). The LM5000-6 is pin se- lectable for either 600kHz (FS Grounded) or 1.3MHz (FS Open). The device is available in a low profile 16-lead TSSOP package or a thermally enhanced 16-lead LLP package. Typical Application Circuit © 2007 National Semiconductor Corporation Features ■ 80V internal switch ■ ...
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... Connection Diagram Ordering Information Order Number LM5000-3MTC LM5000-3MTCX LM5000SD-3 LM5000SDX-3 LM5000SD-6 LM5000SDX-6 Pin Descriptions 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 2) Lead Temperature ...
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Symbol Parameter θ Thermal Resistance JA Note 1: Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended to be functional, but device parameter specifications may not ...
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Typical Performance Characteristics Iq (non-switching (switching Temperature fb = 300kHz Iq (non-switching 20031920 = 300kHz Iq (switching 20031922 20031924 5 @ ...
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Current Limit vs Temperature f vs Low (- vs. Temperature @ FS = Low (-3) SW www.national.com Current Limit vs V 20031926 f vs 20031928 f vs. Temperature @ FS = ...
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Temperature @ FS = Low (-6) SW Error Amp. Transconductance vs Temp. f vs. Temperature @ FS = OPEN (-6) SW 20031974 BYP Pin Voltage vs V 20031932 7 20031975 IN 20031933 www.national.com ...
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FIGURE 1. 300 kHz operation, 48V output FIGURE 2. 700 kHz operation, 48V output 8 20031953 20031954 ...
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Block Diagram Boost Regulator Operation The LM5000 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 3. At the start of each ...
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Operation (a) First Cycle of Operation (b) Second Cycle Of Operation CONTINUOUS CONDUCTION MODE The LM5000 is a current-mode, PWM regulator. When used as a boost regulator the input voltage is stepped higher output voltage. In continuous ...
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Figure 4 (a)). If the slope of the inductor current is too great, the circuit will be unstable above duty cycles of 50%. The LM5000 provides a compensation pin (COMP) to cus- tomize the voltage loop feedback recommended ...
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R is the output impedance of the error amplifier, O 850kΩ. Since R is generally much less than R C have much effect on the above equation and can be neglected until a value is chosen to set the ...
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OUTPUT VOLTAGE LIMITATIONS The maximum output voltage of a boost regulator is the max- imum switch voltage minus a diode drop flyback regula- tor, the maximum output voltage is determined by the turns ratio, N, and the duty ...
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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 1 BZX84C10-NSA D ...
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Physical Dimensions inches (millimeters) unless otherwise noted For Ordering, Refer to Ordering Information Table TSSOP-16 Pin Package (MTC) NS Package Number MTC16 15 www.national.com ...
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LLP-16 Pin Package (SDA) For Ordering, Refer to Ordering Information Table NS Package Number SDA16A 16 ...
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Notes 17 www.national.com ...
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