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PACUSBVB-D3Y6R中文资料

USB Downstream Port Terminator with

VBUS ESD Protection

Features

? A low-capacitance USB downstream port termina-tor, EMI filter, and transient over-voltage protector in a single surface-mounted package

?ESD protection to ±20kV contact discharge, per MIL-STD-883D, Method 3015

?ESD protection to ±15kV contact discharge, per IEC 61000-4-2 International Standard

?Provides ESD protection for the VBUS line

?Compact SOT23-6 package saves board space and lowers manufacturing costs compared to dis-crete solutions

?Capacitors matched to a precision exceeding the USB specification

Lead-free versions available

Applications

?ESD protection and termination of USB downstream ports ?Desktop PCs ?Notebooks ?Set-top boxes ?

USB hubs

Product Description

The PACUSBVB-D1/D2/D3 is a single-channel USB downstream-port termination network. It integrates EMI/RFI filter components R1 and C1 as recom-mended by the USB specification, as well as the required 15k Ω pull-down resistors (R2) to GND. In addition, PACUSBVB-D1/D2/D3 provides a very high level of protection for sensitive electronic components that may be subjected to electrostatic discharge (ESD).The device pins will safely dissipate ESD strikes of ±15kV, exceeding the maximum requirements of the IEC 61000-4-2 international standard. Using the MIL-STD-883D (Method 3015) specification for Human Body Model (HBM) ESD, all pins are protected from contact discharges to ±20kV.

The PACUSBVB-D1/D2/D3 also features a fifth zener diode (cathode at pin 5) which provides ESD protection for the USB VBUS line.

There are three options for the value of the series resistor R1: 15Ω, 33Ω, and 22Ω. This series resis-tance, plus the USB driver output resistance, must be close to the USB cable’s characteristic impedance of 45Ω (each side) to minimize transmission line reflec-tions.

The PACUSBVB-D1/D2/D3 is housed in a 6-pin SOT23 package and is available with optional lead-free finishing.

Electrical Schematic

GND

R1R1

R2R2

V BUS

Ordering Information

Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.

PIN DESCRIPTIONS

PINS NAME DESCRIPTION

1D+ CNTR D+ Data to the USB controller circuitry 2GND Ground Pin

3D- CNTR D- Data to the USB controller circuitry 4D- CONN D- Data to the USB connector 5V BUS V BUS input pin

D+ CONN

D+ Data to the USB connector

PACKAGE / PINOUT DIAGRAMS

6-pin SOT23

V BUS 1

UDn /Top View

Note 1: The "n" shown in part markings above represents either the digit "1," "2," or "3."Note 2: These drawings are not to scale.

D+ CNTR

GND D- CNTR

D+ CONN D- CONN

UDnR

PART NUMBERING INFORMATION

Pins R1 Value Package Standard Finish

Lead-free Finish

Ordering Part Number 1Part Marking

15 ΩSOT23-6

PACUSBVB-D2Y6UD2PACUSBVB-D2Y6R UD2R 22 ΩPACUSBVB-D3Y6UD3PACUSBVB-D3Y6R UD3R 33 Ω

PACUSBVB-D1Y6

UD1

PACUSBVB-D1Y6R

UD1R

Specifications

ABSOLUTE MAXIMUM RATINGS

PARAMETER RATING UNITS Storage Temperature Range-65 to +150°C Power Dissipation per Resistor 100mW Package Power Dissipation 200mW Voltage on any pin (DC) 6V

STANDARD OPERATING CONDITIONS

PARAMETER RATING UNITS Operating Temperature-40 to +85°C V BUS Input Voltage5V

Specifications (cont’d)

Note 1:Guaranteed by design and characterization.

Note 2:ESD voltage applied to pins with respect to GND, one at a time; unused pins are left open.

Note 3:Pins 1 and 3 are not connected to the USB port connector, and therefore are not exposed to external ESD hazards. Thus,

they do not require the high ESD protection levels provided for pins 4, 5, and 6.

Note 4:ESD Clamping Voltage is measured at the opposite end of R1 from the pin to which the ESD discharge is applied (e.g., if

ESD is applied to pin 6, then the clamping voltage is measured at pin 1).

ELECTRICAL OPERATING CHARACTERISTICS

SYMBOL PARAMETER

CONDITIONS MIN TYP MAX UNITS R1Resistance of R1 Resistor (PACUSBVB-D2Y6/Y6R) T A = 25°C 121518ΩR1Resistance of R1 Resistor (PACUSBVB-D3Y6/Y6R) T A = 25°C 17.62226.4ΩR1Resistance of R1 Resistor (PACUSBVB-D1Y6/Y6R) T A = 25°C 26.4

3339.6

ΩR2Resistance of R2 Resistor T A = 25°C 15k ΩTCR Temperature Coefficient of Resis-tance

Note 1

+1300ppm/°C C1Capacitance of C1 Capacitor

0 VDC; 30 mVAC; 1MHz; 25°C 37.64756.4pF 2.5 VDC; 30 mVAC; 1MHz; 25°C

25.632

38.4pF TOL CM Matching Tolerance of C1 Capacitors 1MHz; 25°C +2%I LEAK Diode Leakage Current to GND Measured at 3.3 VDC, 25°C 1

100nA V RB Diode Reverse Bias Voltage I LOAD = 10μA; T A = 25°C 5.5V V SIG

Signal Voltage:

Positive Clamp Negative Clamp

I LOAD = 10mA; T A = 25°C I LOAD = 10mA; T A = 25°C

5.6-0.4

6.8-0.8

9.0-1.5

V V V ESD

In-system ESD Withstand Voltage

MIL-STD-883D, Method 3015 (HBM)

IEC 61000-4-2 Contact Dis-charge

Pins 1, 3; Notes 1, 2 and 3Pins 4, 5; Notes 1 and 2Pins 4, 5; Notes 1 and 2

±4±20±15

kV kV kV

V CL

Clamping voltage under ESD discharge

MIL-STD-883D, Method 3015 +8kV; Notes 1 and 4

12V MIL-STD-883D, Method 3015 -8kV; Notes 1 and 4

-7

Performance Information

Capacitance vs. Voltage

The C1 capacitance value as a function of DC voltage across it is presented in Figure 1. The curve is normal-ized to a capacitance of 1.0 capacitance units at 2.5VDC.

Figure 1. Diode Capacitance vs. DC Voltage (Normalized)

Insertion Loss vs. Frequency Characteristics

Figure 2. Insertion Loss vs. Frequency Performance Curve, PACUSBVB-D1 (SOT23-6)

DC Voltage

N o r m a l i z e d C 1 C a p a c i t a n c e

1.01.2

1.4

1.60.80.60.40.200

Performance Information (cont’d)

Figure 3. Insertion Loss vs. Frequency Performance Curve, PACUSBVB-D2 (SOT23-6)

Figure 4. Insertion Loss vs. Frequency Performance Curve, PACUSBVB-D3 (SOT23-6)

Application Information

The PACUSBVB-D1/D2/D3 provides a complete inter-face for a single downstream USB port typically found in computers and USB hubs. It integrates the series resistors (R1) and the 15kΩ pull-down resistors (R2) for both USB data lines (D+ and D-) as well as the capacitors to ground for EMI suppression. Zener diodes provide ESD protection up to 15kV contact dis-charge per the IEC 61000-4-2 standard and protect the USB controller on both data lines. The 6-lead PACUS-BVB-D1/D2/D3 device provides an additional zener diode to protect the VBUS USB power line.

The PACUSBVB-D1/D2/D3 should be placed on the PCB between the USB controller and the USB connec-tor, as shown on the Connection Diagram Figure5.

Figure 5. Connection Diagram for PACUSBVB-D1/D2/D3 To guarantee the best ESD and filtering performance,

it is recommended that the PACUSBVB-D1/D2/D3 be

located close to the USB connector. Also, the trace

lengths between the PACUSBVB-D1/D2/D3 and the

USB controller should be kept as short as possible. DOWN-USB

USB CONTROLLER PACUSBVB-nnY6

D+

D-

D+

D-

STREAM

CONNECTOR

VBUS

Mechanical Details

SOT23-6 Mechanical Specifications:

Dimensions for the PACUSBVB-D1/D2/D3 supplied in a 6-pin SOT23 package are presented below.

For complete information on the SOT23-6, see the Cal-ifornia Micro Devices SOT23 Package Information doc-ument.

* This is an approximate amount which may vary.Package Dimensions for SOT23-6.

PACKAGE DIMENSIONS Package SOT23-6 (JEDEC name is MO-178) Pins6

Dimensions

Millimeters Inches Min Max Min Max

A-- 1.45--0.057 A10.000.150.0000.006 b0.300.500.0120.020 c0.080.220.0030.009

D 2.75 3.050.1080.120

E 2.60 3.000.1020.118

E1 1.45 1.750.0570.069 e0.95 BSC0.0374 BSC

e1 1.90 BSC0.0748 BSC

L0.300.600.0120.024 L10.60 REF0.024 REF

# per tape

and reel

3000 pieces*

Controlling dimension: millimeters

TOP VIEW

SIDE VIEW

END VIEW

123

654

E1E

Pin 1

Marking

Mechanical Package Diagrams