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USB2533 数据表(PDF) 21 Page - SMSC Corporation

部件名 USB2533
功能描述  USB 2.0 Hi-Speed 3-Port Hub Controller
PDF  61 Pages
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制造商  SMSC [SMSC Corporation]
网页  http://www.smsc.com
标志 SMSC - SMSC Corporation

USB2533 数据表(HTML) 21 Page - SMSC Corporation

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USB 2.0 Hi-Speed 3-Port Hub Controller
Datasheet
SMSC USB2533
21
Revision 1.0 (06-17-13)
DATASHEET
Chapter 4 Power Connections
4.1
Integrated Power Regulators
The integrated 3.3V and 1.2V power regulators allow the device to be supplied via a single 3.3V
external power supply.
The regulators are controlled by RESET_N. When RESET_N is brought high, the 3.3V regulator will
turn on. When RESET_N is brought low the 3.3V regulator will turn off.
4.2
Power Connection Diagrams
Figure 4.1 illustrates the power connections for the USB2533.
Figure 4.1 Power Connections
3.3V Regulator
(Bypass)
(IN)
(OUT)
VDDA33
+3.3V
Supply
1.2V
Core Logic
3.3V I/O
USB2533
Single Supply Application
1.2V Regulator
(IN)
(OUT)
3.3V Internal
Logic
VDDA33
VDDA33
VDDCR12
1.0uF
VSS
VDD33
(2x)



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