lm2575-5 ON Semiconductor, lm2575-5 Datasheet
lm2575-5
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lm2575-5 Summary of contents
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... Since the LM2575 converter is a switch−mode power supply, its efficiency is significantly higher in comparison with popular three−terminal linear regulators, especially with higher input voltages. In many cases, the power dissipated by the LM2575 regulator is so low, that no heatsink is required or its size could be reduced dramatically. ...
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... Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Feedback LM2575 330 mH Output ...
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... External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2575 is used as shown in the Figure 14 test circuit, system performance will be as shown in system parameters section. 2. Tested junction temperature range for the LM2575 and the NCV2575: (Unless otherwise specified for the 3 ...
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DEVICE PARAMETERS ELECTRICAL CHARACTERISTICS for the 12 V version, and for the 15 V version operating junction temperature range that applies [Note 2], unless otherwise noted.) Characteristics ALL OUTPUT VOLTAGE VERSIONS Feedback Bias Current ...
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TYPICAL PERFORMANCE CHARACTERISTICS 0 200 mA Load 0.4 Normalized 25°C J 0.2 0 -0.2 -0.4 -0.6 -50 - JUNCTION TEMPERATURE (°C) J Figure 2. Normalized ...
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T = 25°C J 100 5 INPUT VOLTAGE (V) in Figure 8. Standby Quiescent Current 2 Normalized at 25°C 0 -2.0 -4.0 -6.0 ...
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... Figure 14. Typical Test Circuit PCB LAYOUT GUIDELINES On the other hand, the PCB area connected to the Pin 2 (emitter of the internal switch) of the LM2575 should be kept to a minimum in order to minimize coupling to sensitive circuitry. can generate Another sensitive part of the circuit is the feedback important to keep the sensitive feedback wiring short ...
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... R2, R1 and applied to the non−inverting input of the internal error amplifier. In the Adjustable version of the LM2575 switching regulator this pin is the direct input of the error amplifier and the resistor network R2 connected externally to allow programming of the output voltage. ...
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V on(SW) Power Power Power Switch Switch Switch Power Off Off On Switch On V (FWD min Power Power Diode Diode Switch Switch Figure 16. Buck Converter Idealized Waveforms Time I (AV) Load Time http://onsemi.com 9 ...
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... For a robust design the diode should have a current rating equal to the maximum current limit of the LM2575 to be able to withstand a continuous output short B. The reverse voltage rating of the diode should be at least 1.25 times the maximum input voltage. ...
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... For a robust design, the diode should have a current rating equal to the maximum current limit of the LM2575 to be able to withstand a continuous output short. B. The reverse voltage rating of the diode should be at least 1.25 times the maximum input voltage. ...
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... Output Capacitor Selection (C ) out A. Since the LM2575 is a forward−mode switching regulator with voltage mode control, its open loop 2−pole−2−zero frequency characteristic has the dominant pole−pair determined by the output capacitor and inductor values. For stable operation, the capacitor must satisfy the ...
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... MAXIMUM LOAD CURRENT (A) L Figure 21. LM2575−Adj http://onsemi.com 13 H1000 L680 L470 L330 L220 0.3 0.4 0.5 0.6 0.7 0 MAXIMUM LOAD CURRENT (A) L Figure 18. LM2575−5.0 H2200 H1500 H1000 H680 L680 L470 L330 0.3 0.4 0.5 0.6 0.7 0 MAXIMUM LOAD CURRENT (A) L Figure 20. LM2575−15 H470 L150 L100 0.7 0.8 0.9 1.0 L150 0.9 1.0 H470 L220 0.9 1.0 ...
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... NOTE: Table 1 and Table 2 of this Indicator Selection Guide shows some examples of different manufacturer products suitable for design with the LM2575. Table 1. Inductor Selection Guide Pulse Eng Renco PE−92108 RL2444 PE−53113 RL1954 PE−52626 RL1953 PE−52627 RL1952 PE− ...
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... Renco Electronics Inc. AIE Magnetics Coilcraft Inc. Coilcraft Inc., Europe Tech 39 Schott Corp. Table 4. Diode Selection Guide gives an overview about both surface−mount and through−hole diodes for an effective design. Device listed in bold are available from ON Semiconductor. Schottky 1.0 A SMT THT ...
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... EMI troubles. A fast−recovery diode with soft recovery characteristics can better fulfill a quality, low noise design requirements. Table 4 provides a list of suitable diodes for the LM2575 regulator. Standard 50/60 Hz rectifier diodes such as the 1N4001 series or 1N5400 series are NOT suitable. Inductor The magnetic components are the cornerstone of all switching power supply designs ...
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... To simplify the inductor selection process, an inductor selection guide for the LM2575 regulator was added to this data sheet (Figures 17 through 21). This guide assumes that the regulator is operating in the continuous mode, and selects an inductor that will allow a peak−to−peak inductor ripple current certain percentage of the maximum design load current ...
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... Output Voltage Ripple and Transients Source of the Output Ripple Since the LM2575 is a switch mode power supply regulator, its output voltage, if left unfiltered, will contain a sawtooth ripple voltage at the switching frequency. The output ripple voltage value ranges from 0. the output voltage caused mainly by the inductor sawtooth ripple current multiplied by the ESR of the output capacitor ...
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... By grounding the feedback pin, the regulator senses the inverted output voltage and regulates it. In this example the LM2575−12 is used to generate a −12 V output. The maximum input voltage in this case cannot exceed +28 V because the maximum voltage ...
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... LM2575− 100 ON/OFF Shutdown Input R3 470 MOC8101 Circuit Using an Optocoupler Shutdown Off Input 5 LM2575− 100 mF Q1 2N3906 5 ON/OFF 3 GND Circuit Using a PNP Transistor 3 GND -V out out ...
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... NOTE: This picture does not show the complete circuit. Figure 31. Undervoltage Lockout Circuit for http://onsemi.com LM2575− 0 ON/OFF 3 GND LM2575−5 100 mF 5 ON/OFF 2N3904 ≈ Buck Converter GND ...
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... Z1 1N5242B Q1 2N3904 NOTE: This picture does not show the complete circuit. Figure 32. Undervoltage Lockout Circuit for Buck−Boost Converter Unregulated DC Input +V in LM2575−Adj + 1 3 GND 100 mF /50 V Figure 33. Adjustable Power Supply with Low Ripple Voltage ...
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... THE LM2575−5.0 STEP−DOWN VOLTAGE REGULATOR WITH 5 1.0 A OUTPUT POWER CAPABILITY. TYPICAL APPLICATION WITH THROUGH−HOLE PC BOARD LAYOUT +V in Unregulated DC Input +7 + 100 mF /50 V GND in C1 − 100 mF Aluminium Electrolytic C2 − 330 mF Aluminium Electrolytic D1 − ...
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... Tech 39: 77 458 BV, Toroid Core, Through−Hole, Pin 3 = Start, Pin 7 = Finish L2 − 25 mH, TDK: SFT52501, Toroid Core, Through−Hole R1 − 1 − Figure 38. Schematic Diagram of the 8 1.0 V Step−Down Converter Using the LM2575−Adj (An additional LC filter is included to achieve low output ripple voltage) GND U1 LM2575 ...
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... NCV2575D2T−ADJG NCV2575D2T−ADJR4G LM2575TV−3.3 LM2575TV−3.3G LM2575T−3.3 LM2575T−3.3G 3.3 V LM2575D2T−3.3 LM2575D2T−3.3G LM2575D2T−3.3R4 LM2575D2T−3.3R4G LM2575TV−005 LM2575TV−005G LM2575T−005 LM2575T−005G LM2575D2T−005 LM2575D2T−005G 5.0 V LM2575D2T−5R4 LM2575D2T−5R4G NCV2575D2T−5G NCV2575D2T−5R4G † ...
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... LM2575D2T−12R4G NCV2575D2T−12G NCV2575D2T−12R4G LM2575TV−015 LM2575TV−015G LM2575T−015 LM2575T−015G 15 V LM2575D2T−015 LM2575D2T−015G LM2575D2T−15R4 LM2575D2T−15R4G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D ...
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MARKING DIAGRAMS TO−220 TO−220 TV SUFFIX T SUFFIX CASE 314B CASE 314D LM LM 2575T−xxx 2575T−xxx AWLYWWG AWLYWWG http://onsemi.com PAK D PAK D2T SUFFIX D2T SUFFIX CASE 936A CASE 936A LM NC ...
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B −P− OPTIONAL Q CHAMFER 0.24 (0.610 0.10 (0.254 −Q− B1 DETAIL A 0.356 (0.014) T ...
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... P 0.058 0.078 1.473 1.981 R 5 REF _ 5 REF _ S 0.116 REF 2.946 REF U 0.200 MIN 5.080 MIN V 0.250 MIN 6.350 MIN 1.016 0.04 mm inches ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative LM2575/D ...