MIC4574-3.3BN Micrel Inc, MIC4574-3.3BN Datasheet
MIC4574-3.3BN
Specifications of MIC4574-3.3BN
Related parts for MIC4574-3.3BN
MIC4574-3.3BN Summary of contents
Page 1
... 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 Standard MIC4574-3.3BN MIC4574-5.0BN MIC4574BN Pin Configuration Pin Description Pin Number Pin Name SGND 3 SHDN 4 PGND 5 VIN M9999-062105 Temperature Pb-Free Voltage MIC4574-3.3YN 3.3V –40°C to +85°C MIC4574-5.0YN 5.0V –40°C to +85°C MIC4574YN Adjustable –40°C to +85°C ...
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... The device is not guaranteed to function outside its operating rating. Note 3. Devices are ESD sensitive. Handling precautions recommended. Note 4. Specification for packaged product only. Note 5. The MIC4574 is not guaranteed to survive a short circuit to ground for input voltage above 24V. June 2005 Operating Ratings (Note 1) Supply Voltage (V Package Thermal Resistance θ ...
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... MIC4574 Block Diagrams Shutdown Enable SHDN MIC4574-x.x Shutdown Enable SHDN MIC4574 M9999-062105 +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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... MIC4574 Applications Information The applications circuits that follow have been constructed and tested. Refer to “Application Note 15” for additional information, including efficiency graphs and manufacturer’s addresses and telephone numbers for most circuits SHDN SW MIC4574-3.3BN 6V to 24V SGND PGND 47µ 35V C1 Nichicon UPL1V470MEH, ESR = 0.34Ω ...
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... MIC4574 Package Information 0.018 (0.57) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...