MIC4574-5.0BWM MICREL [Micrel Semiconductor], MIC4574-5.0BWM Datasheet
MIC4574-5.0BWM
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MIC4574-5.0BWM Summary of contents
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... MIC4574 General Description The MIC4574 is a series of easy to use fixed and adjustable BiCMOS step-down (buck) switch-mode voltage regulators. The 200kHz MIC4574 duplicates the pinout and function of the 52kHz LM2574. The higher switching frequency may allow 2:1 reduction in output filter inductor size. ...
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... MIC4574 Ordering Information Part Number MIC4574-3.3BN MIC4574-5.0BN MIC4574BN MIC4574-3.3BWM MIC4574-5.0BWM MIC4574BWM Pin Configuration FB 1 SGND 2 SHDN 3 PGND 4 8-Pin DIP (N) Pin Description Pin Number Pin Number Pin Name N Package WM Package SGND 3 5 SHDN 4 6 PGND ...
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... SHDN Input Current SHDN = 5V (regulator off) SHDN = 0V (regulator on) General Note: Devices are ESD protected, however, handling precautions are recommended. Note 1: The MIC4574 is not guaranteed to survive a short circuit to ground for input voltage above 24V. Operating Ratings Supply Voltage (V Package Thermal Resistance Plastic DIP .................................................. 130 C/W JA SOIC ...
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... MIC4574 Block Diagrams Shutdown Enable SHDN MIC4574-x.x Shutdown Enable SHDN MIC4574 April 1998• +24V max Internal Regulator Thermal Current Shutdown Limit 200kHz Oscillator Driver Com- parator 0.5A Switch 1.23V Bandgap Error Amp GND Block Diagram with External Components Fixed Step-Down Regulator +24V max ...
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... MIC4574 Functional Description The MIC4574 is a variable duty cycle switch-mode regulator with an internal power switch. Refer to the block diagrams. Supply Voltage The MIC4574 operates from a +4V to +24V unregulated input. Highest efficiency operation is from a supply voltage below +15V. Enable/Shutdown The shutdown ( ) input is TTL compatible. Ground the SHDN input if unused ...
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... D1 MBRS130LT3 Sanyo 35CV168GX, ESR = 0.34 C2 Sanyo 16CV470GX, ESR = 0.17 D1 Motorola MBRS130LT3 L1 Coilcraft DO3316P-104, DCR = 0.23 Low-Cost Surface Mount L1 5V/0. SHDN SW 100µH MIC4574-5.0BWM 470µF SGND PGND 16V D1 MBRS130LT3 Sanyo 35CV168GX, ESR = 0.34 C2 Sanyo 16CV470GX, ESR = 0.17 D1 Motorola MBRS130LT3 L1 Coilcraft DO3316P-104, DCR = 0 ...