LM2576D2T-5 Motorola Inc, LM2576D2T-5 Datasheet
LM2576D2T-5
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LM2576D2T-5 Summary of contents
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... DEVICE TYPE/NOMINAL OUTPUT VOLTAGE LM2576–3.3 LM2576–5 LM2576–12 LM2576–15 LM2576–ADJ LM2576T–XX LM2576TV– –40 to +125 C LM2576D2T– Voltage Option, i.e. 3. and ADJ for Adjustable Output. Motorola, Inc. 1997 Order this document by LM2576/D LM2576 EASY SWITCHER 3.0 A STEP–DOWN ...
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Figure 1. Block Diagram and Typical Application Typical Application (Fixed Output Voltage Versions) 7.0 V – Unregulated DC Input C in 100 F Representative Block Diagram and Typical Application +V in Unregulated DC Input ...
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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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DEVICE PARAMETERS ELECTRICAL CHARACTERISTICS (Unless otherwise specified for the 3.3 V, 5.0 V, and Adjustable version for the 12 V version, and for the 15 ...
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TYPICAL PERFORMANCE CHARACTERISTICS Figure 2. Normalized Output Voltage 1 0.8 I Load = 500 mA 0.6 Normalized 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 –50 – ...
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TYPICAL PERFORMANCE CHARACTERISTICS Figure 8. Standby Quiescent Current 200 180 160 140 120 100 INPUT VOLTAGE (V) Figure 10. Oscillator Frequency ...
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TYPICAL PERFORMANCE CHARACTERISTICS Figure 13. Switching Waveforms s/DIV Vout = Output Pin Voltage, 10 V/DIV B: Inductor Current, 2.0 ...
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V – Unregulated 100 F DC Input 7.0 V – Unregulated 100 F DC Input As in any switching regulator, the layout of the printed circuit board is ...
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Pin Symbol This pin is the positive input supply for the LM2576 step–down switching regulator. In order to minimize voltage transients and to supply the switching currents needed by the regulator, a suitable input bypass capacitor must ...
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Procedure (Fixed Output Voltage Version) In order to simplify the switching regulator design, a step–by–step design procedure and some examples are provided. Procedure Given Parameters: V out = Regulated Output Voltage (3 ...
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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 some examples are provided. Procedure 5. Output Capacitor Selection (C out ) A. Since the LM2576 is a forward–mode switching regulator with ...
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Procedure (Adjustable Output Version: LM2576–ADJ) (continued) Procedure 4. Inductor Selection (L1) A. Use the following formula to calculate the inductor Volt x microsecond [ constant out – V out in ...
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LM2576 Series Buck Regulator Design Procedures Indicator Value Selection Guide (For Continuous Mode Operation) Figure 18. LM2576–3.3 60 L680 40 L470 20 15 L330 10 L220 8.0 L150 7.0 L100 L68 6.0 5.0 0.3 0.4 0.5 0.6 0.8 1.0 I ...
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Schottky 3.0 A Through Surface Hole Mount 20 V 1N5820 SK32 MBR320P SR302 30 V 1N5821 SK33 MBR330 30WQ03 SR303 31DQ03 40 V 1N5822 SK34 MBR340 30WQ04 SR304 MBRS340T3 31DQ04 MBRD340 50 V MBR350 SK35 31DQ05 ...
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Table 3. Example of Several Inductor Manufacturers Phone/Fax Numbers Pulse Engineering, Inc. Pulse Engineering, Inc. Europe Renco Electronics, Inc. Tech 39 Schott Corporation Input Capacitor ( The Input Capacitor Should Have a Low ESR For stable operation of ...
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They provide the best efficiency especially in low output voltage applications (5.0 V and lower). Another choice could be Fast–Recovery, or Ultra–Fast Recovery diodes. It has to be noted, ...
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Do Not Operate an Inductor Beyond its Maximum Rated Current Exceeding an inductor’s maximum current rating may cause the inductor to overheat because of the copper wire losses, or the core may saturate. Core saturation occurs when the flux density ...
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Thermal Analysis and Design The following procedure must be performed to determine whether or not a heatsink will be required. First determine D(max) maximum regulator power dissipation in the application A(max ) maximum ambient temperature in ...
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Since the switch currents in this buck–boost configuration are higher than in the standard buck converter topology, the available output current is lower. This type of buck–boost inverting regulator can also require a larger amount of start–up input current, even ...
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Figure 29. Inverting Buck–Boost Regulator Shutdown Circuit Using a PNP Transistor Shutdown +V Off Input 5 LM2576– 100 F Q1 2N3906 5 ON/OFF NOTE: This picture ...
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Pin 3, which is determined by the following expression 1 Figure 32. Undervoltage Lockout Circuit for Buck Converter + ...
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THE LM2576–5 STEP–DOWN VOLTAGE REGULATOR WITH 5 3.0 A OUTPUT POWER CAPABILITY. TYPICAL APPLICATION WITH THROUGH–HOLE PC BOARD LAYOUT Figure 35. Schematic Diagram of the LM2576–5 Step–Down Converter +V in Unregulated DC Input + 7.0 to ...
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THE LM2576–ADJ STEP–DOWN VOLTAGE REGULATOR WITH 8 1.0 A OUTPUT POWER CAPABILITY. TYPICAL APPLICATION WITH THROUGH–HOLE PC BOARD LAYOUT Figure 38. Schematic Diagram of the 8 3.0 A Step–Down Converter Using the LM2576–ADJ 4 Unregulated +V ...
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0.356 (0.014 –P– 0.10 (0.254 LM2576 OUTLINE ...
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OPTIONAL A CHAMFER 0.010 (0.254 MOTOROLA ANALOG IC DEVICE DATA LM2576 OUTLINE DIMENSIONS D2T SUFFIX PLASTIC PACKAGE CASE 936A– PAK) ISSUE A –T– TERMINAL ...
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Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of ...
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How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1–303–675–2140 or 1–800–441–2447 Customer Focus Center: 1–800–521–6274 Mfax : RMFAX0@email.sps.mot.com – TOUCHTONE 1–602–244–6609 Motorola Fax Back System – US & ...