MIC4574BWM Micrel Semiconductor, MIC4574BWM Datasheet
MIC4574BWM
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MIC4574BWM Summary of contents
Page 1
... Isolated flyback converter using minimum external components • Negative boost converter 3 7 SHDN SW MIC4574-5.0BN SGND PGND 47µ 35V Fixed Regulator SHDN SW 100µH MIC4574BWM SGND PGND MBRS130LT3 Adjustable Regulator 4-92 MIC4574 L1 5.0V/0.5A 100µH C2 220µF 16V D1 1N5819 3.3V/0. 2.49k 3300pF ...
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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 April 1998• Voltage Temperature Range 3.3V – ...
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MIC4574 Absolute Maximum Ratings Supply Voltage (V ) Note 1 ....................................... +40V IN Shutdown (V ) ....................................... –0.3V to +36V SHDN Output Switch (V ) steady state ................................. –1V SW Junction Temperature (T ) ...................................... +150 C J Storage Temperature ...
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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 ...
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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 ...
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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 12 SHDN SW 220µH R2 MIC4574BWM 13. SGND PGND R1 D1 1.50k 4 6 SS16 1% UUX1H470MNT1GS, ESR = 0.4 16CV470GX, ESR = 0.17 DO3316-224, DCR = 0.53 Low-Cost Surface Mount ...