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MIC2506BM Datasheet(PDF) 10 Page - Micrel Semiconductor |
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MIC2506BM Datasheet(HTML) 10 Page - Micrel Semiconductor |
10 / 12 page MIC2505/2506 Micrel MIC2505/2506 10 April 1998 Applications Information USB Application Figure 4 depicts a low cost and robust implementation of a four-port, self-powered USB hub circuit employing ganged overcurrent protection. ON/OFF OVERCURRENT MIC2505-2/-1 3.3V USB Controller VBUS D+ D– GND VBUS D+ D– GND 100k MIC5203-3.3 MIC5207-3.3 LDO Regulator IN OUT GND 33µF Ferrite Bead VBUS D+ D– GND D+ D– V+ EN OUT FLG IN GND OUT GATE IN Bold lines indicate 0.1" wide, 1-oz. copper high-current traces. Downstream USB Port 1 500mA max. 33µF VBUS D+ D– GND Data VBUS D+ D– GND 33µF 33µF 0.01µF 0.01µF 0.01µF 0.01µF 4.7 µF 1.0 µF GND 0.1µF 4.45V to 5.25V 3.5A max. (+) (–) 33µF Downstream USB Port 2 500mA max. Downstream USB Port 3 500mA max. Downstream USB Port 4 500mA max. Figure 4. Ganged-Switch Self-Powered Hub |
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