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34726 Fiches technique(PDF) 14 Page - Freescale Semiconductor, Inc |
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34726 Fiches technique(HTML) 14 Page - Freescale Semiconductor, Inc |
14 / 19 page Analog Integrated Circuit Device Data 14 Freescale Semiconductor 34726 TYPICAL APPLICATIONS APPLICATION INFORMATION TYPICAL APPLICATIONS APPLICATION INFORMATION INPUT CAPACITOR The input capacitor is used to minimize the input voltage transient that may cause instability when the load transient current is high. Typically a 4.7µF X5R ceramic capacitor is sufficient for most applications. OUTPUT CAPACITOR For stable operation and low output voltage ripple, an X5R ceramic capacitor of 4.7µF minimum value is needed. Depending on the load transient current, a larger capacitance may be required. INDUCTOR SELECTION A 4.7 µH low DC resistance inductor is typically used for the 34726 to guarantee the system stable operation. TYPICAL APPLICATIONS 1.2V OUTPUT DC/DC CONVERTOR Figure 16 shows a typical application using 34726A. CIN and COUT are typically 4.7µF/X5R ceramic capacitors. L1 is typically a 4.7 µH low DC resistance inductor. The FB connects to the output directly for monitoring the output voltage. Normally, the EN pin connects to the input supply directly to enable the regulator. Figure 16. 1.2V/300mA DC/DC convertor VIN EN SW FB GND ON OFF 2.7V ~ 5.5V 1.2V 300mA 34726A CIN 4.7 µF 4.7 µH COUT 4.7 µF L1 |
Numéro de pièce similaire - 34726 |
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Description similaire - 34726 |
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