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MIC2875-4.75YMT Datasheet(PDF) 2 Page - Microchip Technology |
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MIC2875-4.75YMT Datasheet(HTML) 2 Page - Microchip Technology |
2 / 24 page MIC2875 DS20005549A-page 2 2015 Microchip Technology Inc. Typical Application Schematics Functional Block Diagrams AGND SW IN EN PGND OUT /PG FB V IN V OUT 5.0V L1 1μH 2.5V to 5.0V C1 4.7μF 10V V IN R1 1MΩ R2 910kΩ R3 200kΩ C2* 22μF 10V MIC2875 (Adjustable Output) MIC2875 (Fixed Output) AGND SW V IN IN EN PGND OUT /PG OUTS V OUT 5.0V L1 1μH 2.5V to 5.0V C1 4.7μF 10V V IN R1 1MΩ C2* 22μF 10V * Two more 22 F capacitors should be added in parallel with C2 for V IN > 5.0V. 50 60 70 80 90 100 0.001 0.010 0.100 1.000 LOAD CURRENT (A) VIN = 3.6V VIN = 3.0V VIN = 2.5V VOUT =5.0V L = 1μH COUT = 22μF Efficiency vs. Load Current MIC2875 (Fixed Output) MIC2875 (Adj. Output) EN IN SW ANTI- RINGING REFERENCE GENERATOR 2MHz OSCILLATOR OC 4.8A PWM LOGIC CONTROL + MINIMUM SWITCHING CURRENT SENSE + SLOPE COMPENSATION VIN OUT BODY DRIVER HS DRIVER LS DRIVER /PG PGND AGND VREF SOFT- START PWM OUTS VIN EN IN SW ANTI- RINGING REFERENCE GENERATOR 2MHz OSCILLATOR OC 4.8A PWM LOGIC CONTROL + MINIMUM SWITCHING CURRENT SENSE + SLOPE COMPENSATION VIN OUT BODY DRIVER HS DRIVER LS DRIVER PGL PGH /PG FB PGND AGND VREF SOFT- START PWM |
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