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參數(shù)資料
| 型號(hào)： | FSA3200UMX |
| 廠商： | Fairchild Semiconductor |
| 文件頁(yè)數(shù)： | 6/13頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ANALOG USB VID SWITCH 16UMLP |
| 標(biāo)準(zhǔn)包裝： | 5,000 |
| 功能： | USB 開(kāi)關(guān) |
| 電路： | 2 x DPST，2 x SPDT |
| 導(dǎo)通狀態(tài)電阻： | 6.5 歐姆 |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 4.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-UFQFN |
| 供應(yīng)商設(shè)備封裝： | 16-UMLP（1.8x2.6） |
| 包裝： | 帶卷 (TR) |
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2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FSA3200 Rev. 1.0.8
2
FSA3200
—
Two-Port,
High-Speed
USB2.0
Switch
with
Mobile
High-De
finition
Link
(MHL)
Switch Power Operation
In normal operation, the FSA3200 is powered from the
VCC pin, which typically is derived from a regulated
power management device. In special circumstances,
such as production test or system firmware upgrade, the
device can be powered from the VBUS pin. In this mode
of operation, a valid VBUS voltage is present (per USB2.0
specification) and VCC=0 V, typically due to a no-battery
condition. With the SELn pins strapped LOW (via
external resistor), the FSA3200 closes the USB path,
enabling the initial programming of the system directly
from the USB connector. Once the system has normal
operating supply power with VCC present, the VBUS
supply is not utilized and normal switch operation
commences. Optionally, the Power Select Override
(PSO) pin can be set HIGH to force the device to be
powered from VBUS.
The VBUS / VCC detection capability is not intended to be
an accurate determination of the voltages present,
rather a state condition detection to determine which
supply should be used. These state determinations rely
on the voltage conditions as described in the Electrical
Characterization tables below.
Figure 2. Simplified Logic of Switch Power Selection Circuit
Table 1. Switch Power Selection Truth Table
VCC
VBUS
PSO
(1)
Switch Power Source
0
No switch power, switch paths high-Z
0
1
0
VBUS
1
0
VCC
1
0
VCC
0
1
No switch power, switch paths high-Z
0
1
VBUS
1
0
1
VCC
(2)
1
VBUS
Notes:
1.
Control inputs should never be left floating or unconnected. If the PSO function is used, a weak pull-up resistor
(3 M) should be used to minimize static current draw. If the PSO function is not used, tie directly to GND.
2.
PSO control is overridden with no VBUS and the power selection is switched to VCC.
Table 2. Data Switch Select Truth Table
SEL1
(3)
SEL2
(3)
Function
0
D+/D- connected to USB+/USB-, IDCO connected to IDUSB
0
1
D+/D- connected to USB+/USB-, IDCOM connected to IDMDV
1
0
D+/D- connected to MDV+/MDV-, IDCOM connected to IDUSB
1
D+/D- connected to MDV+/MDV-, IDCOM connected to IDMDV
Note:
3.
Control inputs should never be left floating or unconnected. To guarantee default switch closure to the USB
position, the SEL pins should be tied to GND with a weak pull- down resistor (3 M) to minimize static current draw.
PSO
VCC
VBUS
Switch
Power
Charge Pump
& Regulator
Switch
Power
Selection
Switch
Power
Source
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