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參數資料
| 型號： | SI91861DY-T1 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | 400-mA Smart Regulator for Network Interface Card |
| 中文描述： | 400毫安智能調節(jié)器的網絡接口卡 |
| 文件頁數： | 1/7頁 |
| 文件大?。?/td> | 109K |
| 代理商： | SI91861DY-T1 |
Si91861
Vishay Siliconix
Document Number: 71637
S-40702—Rev. B, 19-Apr-04
www.vishay.com
1
400-mA Smart Regulator for Network Interface Card
FEATURES
Single Fixed 3.3-V Output
Linear Regulator for 5-V Power Input
Auxilliary Input Can Be Bypassed
Automatically Switches Between Linear Regulator
and Bypass Mode
Linear Regulator: 3.3-V
Current; 600-mA Peak Output Current
Low Bypass Switch Voltage-Drop: <55-mV at
150 mA
Built-in Short Circuit and Thermal Shutdown
Protection
3% Output at 400-mA
Low Supply Current
SOIC-8 Package
APPLICATIONS
Network Interface Cards (NIC)
PCMCIA Cards
Cardbus
Desktop Computers/Workstations
DESCRIPTION
The Si91861 provides a constant 3.3-V output with multiple
inputs. This function is required in many power interface
applications, such as the Network Interface Card (NIC). The
Si91861 is offered in small SOIC-8 package with up to 2-W
power handling capability. The complete application circuit
uses only three external components.
The linear regulator steps down from the 5-V supply (5 V
IN
)
to 3.3 V. A 200-m
bypass switch is integrated to connect the
3.3-V
AUX
input to the output. The power drawn priority is
5 V
IN
> 3.3 V
AUX
, where the selection is done internally and
automatically by the Si91861. The power handling capability
is as such as to carry at least 400-mA continuous load current
for any power input condition.
In order to satisfy the stringent ambient temperature
requirements in many applications, the Si91861 is rated for the
industrial temperature range of
40 C to 85 C.
The Si91861 is available in both standard and lead (Pb)-free
packages.
FUNCTIONAL BLOCK DIAGRAM
Regulator
and
Control
3.3 V
OUT
5 V
IN
3.3 V
AUX
GND
Si91861
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SI91861DY-T1-E3 | 功能描述:低壓差穩(wěn)壓器 - LDO 400mA 3.3V Smart LDO w/Bypass RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91871 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:300-mA Ultra Low-Noise LDO Regulator With Discharge Option |
| SI91871_05 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:300-mA Ultra Low-Noise LDO Regulator With Discharge Option |
| SI91871DMP-12-E3 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA LDO 1.2V w/Discharge Option RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91871DMP-12-T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA LDO 1.2V w/Discharge Option RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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