- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄365562 > Si91860 (Vishay Intertechnology,Inc.) 400-mA Smart Regulator for Network Interface Card(用于網(wǎng)絡(luò)接口卡的400mA智能穩(wěn)壓器) PDF資料下載
參數(shù)資料
| 型號(hào)： | Si91860 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | 400-mA Smart Regulator for Network Interface Card(用于網(wǎng)絡(luò)接口卡的400mA智能穩(wěn)壓器) |
| 中文描述： | 400毫安智能調(diào)節(jié)器的網(wǎng)絡(luò)接口卡（用于網(wǎng)絡(luò)接口卡的400mA的智能穩(wěn)壓器） |
| 文件頁數(shù)： | 7/7頁 |
| 文件大小： | 80K |
| 代理商： | SI91860 |
Si91860
Vishay Siliconix
New Product
Document Number: 71340
S-02482
—
Rev. A, 06-Nov-00
www.vishay.com
7
5 V
Regulator
Driver
5 V
SB
5, 6
7, 8
Si91860
3.3 V
OUT
3
5 V
Regulator
Driver
5 V
IN
Logic
Control
3.3 V
AUX
1
2
4
4.7
μ
F
4.7
μ
F
4.7
μ
F
2.2
μ
F
During normal operation, the 5-V
IN
input powers the fixed
3.3-V output (3.3 V
OUT
) through an internal linear regulator.
When 5 V
IN
falls below 4.07 V, the 3.3-V output is powered
through the linear regulator from 5 V
SB
. If both 5 V
IN
and 5 V
SB
are below 4.07 V, then the output (3.3 V
OUT
) is powered from
3.3-V
AUX
input. The power drawn sequence is from 5 V
IN
, then
5 V
SB
and lastly 3.3 V
AUX
. If both 5 V
IN
and 5 V
SB
are above
4.30 V, then 5 V
IN
will power the output. The device prevents
reverse current from flowing from the output to any unbiased
or low voltage input.
Linear Regulator Mode
The output is regulated at 3.3 V when either one of the 5-V
IN
or 5-V
SB
pins is more than 4.30 V. The 5 V
IN
takes precedence
when both the 5-V
IN
and 5-V
SB
pins are more than valid
threshold voltage (i.e. > 4.30 V). The linear regulator will
regulate the output until both the 5-V
IN
and 5-V
SB
pins fall
below 4.07 V.
Bypass Mode
When both the 5-V
IN
and 5-V
SB
pins fall below 4.07 V, the
output is powered by 3.3 V
AUX
through a 0.2- internal switch.
Thermal and Over
–
current Protection
Thermal protection limits total power dissipation in the device.
It safeguards the device in the event of fault conditions. When
the junction temperature exceeds 165 C, the device turns off.
The device turns back on once its junction temperature cools
down by approximately 20 C. The device has overcurrent
protection (typically at 900 mA) when it operates in linear
regulator mode. A continuous short at output pin (3.3 V
OUT
)
will result in a pulsed output as the thermal protection circuitry
cycles the device on and off. For continuous operation, do not
exceed the junction rating of 150 C. In bypass mode, the
device is not current limited.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| Si91871DMP-12-T1 | HEATSINK TO220 HOR MNT W/TAB.75,1 |
| Si91871DMP-15-T1 | HEATSINK TO-220 VERT MNT .75,1 |
| Si91871DMP-18-T1 | 300-mA Ultra Low-Noise LDO Regulator With Discharge Option |
| Si91871DMP-20-T1 | Heat Sink; Package/Case:TO-220; Thermal Resistance:21.2 C/W; Mounting Type:Through Hole; Length:9.9mm; Height:0.75"; Width:0.86"; Body Material:Aluminum; Body Plating:Anodized; Color:Black; Leaded Process Compatible:Yes RoHS Compliant: Yes |
| Si91871DMP-22-T1 | HEATSINK TO220 VER MNT W/TAB.75,3 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI91860DB | 功能描述:低壓差穩(wěn)壓器 - LDO SI91860 Demo Board 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91860DY | 功能描述:低壓差穩(wěn)壓器 - LDO 400mA 3.3V 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91860DY-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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91860DY-T1 | 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91860DY-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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。