LM2574N-5 ON Semiconductor, LM2574N-5 Datasheet
LM2574N-5
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LM2574N-5 Summary of contents
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... Negative Step−Up Converters • Power Supply for Battery Chargers *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2006 August, 2006 − Rev. 8 http://onsemi ...
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Typical Application (Fixed Output Voltage Versions) 7.0 − Unregulated DC Input Representative Block Diagram and Typical Application +V Unregulated in DC Input 5 (12 (3) Feedback R2 Fixed Gain Error Amplifier ...
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OPERATING RATINGS (Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics). Rating Operating Junction Temperature Range Supply Voltage SYSTEM ...
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SYSTEM PARAMETERS ([Note 3] Test Circuit Figure 16) ELECTRICAL CHARACTERISTICS (continued) Adjustable version for the 12 V version min/max values T is the operating junction temperature range that applies [Note 4], unless otherwise noted). ...
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TYPICAL PERFORMANCE CHARACTERISTICS 1 0 100 mA Load 0.6 Normalized 25°C J 0.4 0.2 0 −0.2 −0.4 −0.6 −0.8 −1.0 −50 − JUNCTION TEMPERATURE (°C) ...
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TYPICAL PERFORMANCE CHARACTERISTICS 8.0 6 Normalized at 25°C 4.0 2.0 0 −2.0 −4.0 −6.0 −8.0 10 −50 − JUNCTION TEMPERATURE (°C) J Figure 8. Oscillator Frequency 5.0 4.5 Adjustable Version ...
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TYPICAL PERFORMANCE CHARACTERISTICS 500 200 ms/DIV A: Output Voltage, 50 mV/DIV, AC Coupled B: 100 mA to 500 mA Load Pulse Figure 14. 500 mA Load Transient Response for Continuous Mode Operation, L ...
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V Unregulated C DC Input (12) 7.0 V − Unregulated C DC Input NOTE: Pin numbers are ...
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Pin SO−16W PDIP−8 Symbol This pin is the positive input supply for the LM2574 step−down switching regulator. In order to in minimize voltage transients and to supply the switching currents needed by the regulator, a suitable input ...
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Procedure (Fixed Output Voltage Version) In order to simplify the switching regulator design, a step−by−step design procedure and example is provided. Procedure Given Parameters Regulated Output Voltage (3 out V ...
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Procedure (Fixed Output Voltage Version) (continued) In order to simplify the switching regulator design, a step−by−step design procedure and example is provided. Procedure 5. Output Capacitor Selection (C ) out A. Since the LM2574 is a forward−mode switching regulator with ...
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Procedure (Adjustable Output Version: LM2574−ADJ) Procedure 4. Inductor Selection (L1) A. Use the following formula to calculate the inductor Volt x microsecond [V x ms] constant: V out out ) ...
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LM2574 Series Buck Regulator Design Procedures Indicator Value Selection Guide (For Continuous Mode Operation) 60 680 470 10 9.0 330 8.0 7.0 220 6.0 5.0 0.1 0.15 0.2 0 MAXIMUM LOAD CURRENT (A) L Figure ...
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... Table 1. Diode Selection Guide gives an overview about through−hole diodes for an effective design. Device listed in bold are available from ON Semiconductor Inductor Value Pulse Engineering 100 mH * 52625 150 mH 220 mH 52626 330 mH 52627 470 mH 52628 680 mH ...
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Input Capacitor ( The Input Capacitor Should Have a Low ESR For stable operation of the switch mode converter a low ESR (Equivalent Series Resistance) aluminium or solid tantalum bypass capacitor is needed between the input pin and ...
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Inductor The magnetic components are the cornerstone of all switching power supply designs. The style of the core and the winding technique used in the magnetic component’s design have a great influence on the reliability of the overall power supply. ...
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A Inductor Current Waveform 0 A 0.5 A Power Switch Current Waveform 0 A HORIZONTAL TIME BASE: 5.0 ms/DIV Figure 24. Continuous Mode Switching Current Waveforms Output Voltage Ripple and Transients Source of the Output Ripple Since the LM2574 ...
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Since the current rating of the LM2574 is only 0.5 A, the total package power dissipation for this switcher is quite low, ranging from approximately 0 0.75 W under varying conditions carefully engineered printed circuit ...
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The high input current needed for startup is now partially supplied by the input capacitor Design Recommendations: The inverting regulator operates in a different manner than the buck converter and so a different design procedure has to ...
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The circuit in Figure 31 shows the negative boost configuration. The input voltage in this application ranges from −5.0 to −12 V and provides a regulated −12 V output. If the input voltage is greater than −12 V, the output ...
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LM2574−XX (12 ON/OFF (5) Z1 1N5242 Q1 2N3904 NOTE: This picture does not show the complete circuit (see Figure 27). Figure ...
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The LM2574−5 Step−Down Voltage Regulator with 5 0.5 A Output Power Capability. Typical Application With Through−Hole PC Board Layout +V in Unregulated DC Input + Gnd Figure 36. Schematic ...
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The LM2574−ADJ Step−Down Voltage Regulator with 5 0.5 A Output Power Capability Typical Application With Through−Hole PC Board Layout Unregulated +V DC Input in LM2574−ADJ 5 (12 7 Pwr 2 Sig ...
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... NCV2574DW−ADJR2G LM2574N−3.3 3.3 V LM2574N−3.3G LM2574N−5 5.0 V LM2574N−5G LM2574N− LM2574N−12G LM2574N− LM2574N−15G †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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16X 0. 14X −B− −A− NOTE 2 C −T− N SEATING PLANE 0.13 (0.005) M ...
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... Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com LM2574, NCV2574 N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 26 ON Semiconductor Website: http://onsemi ...