STF202-22 Просмотр технического описания (PDF) - ON Semiconductor

Номер в каталоге

Компоненты Описание

производитель

STF202-22

USB Filter with ESD Protection

ON Semiconductor 

STF202–22

The Figure 10 describes in a simplified way what the USB

port components are. As shown in this diagram, there are

signals for upstream and downstream ports which must be

provided with Line Termination and EMI Filtering to meet

the requirements of the USB specification revision 1.1. In

addition to the Line termination and EMI Filtering, it is also

needed to protect the USB I/O Lines against ESD

conditions, so TVS devices must be added for these

purposes.

CLK

CRISTAL

XTAL1

XTAL2

VCC

GND

REGULATOR

To

Upstream

Ports

DPO DP1–DP4

DMO DM1–DM4

OC1–OC4

PWR1–PWR4

POWER

SWITCHING

D+

D–

VBUS

USB Data Lines

and Power to

Downstream

Ports

GND

Figure 10.

As mentioned before, the ON Semiconductor STF202

device provides “upstream termination”, EMI Filtering and

ESD Protection to IEC6100–4–2 in an integrated solution

placed in a small and single package (TSOP–6, Case 318G).

The typical application for the STF202 device is shown in

the Figure 11.

VBUS

D+

D–

GND

DOWNSTREAM

TERMINATION

VBUS

D+

D–

GND

DOWNSTREAM

TERMINATION

D1D+

TVS

D1D–

POWER

SWITCH

OC

OC

PWR

PWR

DOD+

DOD–

D2D+

TVS

D2D–

USB CONTROLLER

Figure 11.

654

STF202

123

REGULATOR

VBUS

D+

D–

GND

http://onsemi.com

5

Share Link: