USBUF02W6 STMicroelectronics, USBUF02W6 Datasheet

IC EMI FILTER/LINE TERM SOT323-6

USBUF02W6

Manufacturer Part Number
USBUF02W6
Description
IC EMI FILTER/LINE TERM SOT323-6
Manufacturer
STMicroelectronics
Series
ASDr
Datasheet

Specifications of USBUF02W6

Filter Type
Signal Line
Mounting Type
Surface Mount
Termination Style
Surface Mount (SMD,SMT)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Inductance
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
497-3743-2

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A. S. D.
Application
EMI Filter and line termination for USB upstream
ports on:
Features
Description
The USB specification requires upstream ports to
be terminated with pull-up resistors from the D+
and D- lines to Vbus. On the implementation of
USB systems, the radiated and conducted EMI
should be kept within the required levels as stated
by the FCC regulations. In addition to the
requirements of termination and EMC
compatibility, the computing devices are required
to be tested for ESD susceptibility.
The USBUFxxW6 provides the recommended line
termination while implementing a low pass filter to
limit EMI levels and providing ESD protection
which exceeds IEC 61000-4-2 level 4 standard.
The device is packaged in a SOT323-6L which is
the smallest available lead frame package (50%
smaller than the standard SOT23).
Benefits
February 2006
USB Hubs
PC peripherals
Monolithic device with recommended line
termination for USB upstream ports
Integrated Rt series termination and Ct
bypassing capacitors.
Integrated ESD protection
Small package size
EMI / RFI noise suppression
Required line termination for USB upstream
ports
ESD protection exceeding
IEC 61000-4-2 level 4
High flexibility in the design of high density
boards
Tailored to meet USB 1.1 standard
EMI filter and line termination for USB upstream ports
Rev 5
Table 1.
Figure 1.
Complies with the following standards:
IEC 61000-4-2, level 4
MIL STD 883E, Method 3015-7
Class 3 C = 100 pF
3 positive strikes and 3 negative strikes (F = 1 Hz)
Tolerance
CODE 01
CODE 02
Part Number
USBUF01W6
USBUF02W6
Grd
D2
D1
Order Codes
Functional diagram
SOTT323-6L
± 10%
R = 1500
33
22
Rt
Ct
Ct
± 15 kV (air discharge)
± 8 kV (contact discharge)
USBUFxxW6
Rt
Rt
3.3 V
Rp
1.5 k
1.5 k
± 10%
Rp
Marking
UU1
UU2
D4
3.3 V
D3
± 20%
www.st.com
47 pF
47 pF
Ct
1/11
11

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USBUF02W6 Summary of contents

Page 1

... ESD protection exceeding IEC 61000-4-2 level 4 ■ High flexibility in the design of high density boards ■ Tailored to meet USB 1.1 standard February 2006 USBUFxxW6 SOTT323-6L Table 1. Order Codes Part Number USBUF01W6 USBUF02W6 Figure 1. Functional diagram Grd CODE 01 33 CODE 02 22 Tolerance ± ...

Page 2

Characteristics 1 Characteristics Table 2. Absolute ratings (T Symbol ESD discharge IEC 61000-4-2, air discharge V ESD discharge IEC 61000-4-2, contact discharge PP ESD discharge - MIL STD 883E - Method 3015-7 T Maximum junction temperature j T Storage temperature ...

Page 3

USBUFxxW6 2.1 Application example Figure 3. Implementation of ST solutions for USB ports Downstream port Gnd Gnd Downstream port Gnd Gnd 2.2 EMI filtering Current FCC regulations requires ...

Page 4

Technical information USB connectors. Distance between the USB controller and the USB connector must be minimized. The capacitors are used to bypass high frequency energy to ground and for edge t control, and are placed between ...

Page 5

USBUFxxW6 Figure 6. USBUFxxW6 ESD clamping behavior V PP ESD Surge Figure 7. Measurement board ESD SURGE 16kV Air Discharge To have a good approximation of the remaining voltages at both Vin and Vout stages, we give the typical dynamical ...

Page 6

Technical information Figure 8. Remaining voltage at both stages S1 (Vinput) and S2 (Voutput) during ESD surge Please note that the USBUFxxW6 is not only acting for positive ESD surges but also for negative ones. For these kinds of disturbances ...

Page 7

USBUFxxW6 Figure 10. Figure 10: Analog crosstalk measurements 50 Vg Figure 10. gives the measurement circuit for the analog crosstalk application. In the curve shows the effect of the D+ cell on the D-cell. In usual frequency range of analog ...

Page 8

Technical information 2.6 Transition times This low pass filter has been designed in order to meet the USB 1.1 standard requirements that implies the signal edges are maintained within the 4 -20 ns stipulated USB specification limits. To verify this ...

Page 9

USBUFxxW6 3 Packaging information Table 3. SOT323-6L Package Mechanical Data Figure 16. Recommeneded footprint (dimensions in mm) 0.80 Table 4. Mechanical specifications Lead plating Lead plating thickness Lead material Lead coplanarity Body material Flammability A ...

Page 10

... Ordering Information 4 Ordering Information Ordering code USBUF01W6 USBUF02W6 5 Revision History Date Mar-2002 Feb-2005 28-Feb-2006 10/11 Marking Package Weight UU1 SOT323-6L 5.4 mg UU2 SOT323-6L 5.4 mg Revision 3A Last update. 4 Layout update. No content change. Operating temperature range updated to -40 to 70° Layout updated to current standard. ...

Page 11

... USBUFxxW6 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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