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參數(shù)資料
| 型號： | SI9185DMP-AD-T1 |
| 廠商： | Vishay Intertechnology,Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Micropower 500-mA CMOS LDO Regulator |
| 中文描述： | 微500毫安的CMOS LDO穩(wěn)壓器 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 138K |
| 代理商： | SI9185DMP-AD-T1 |
Si9185
Vishay Siliconix
www.vishay.com
10
Document Number: 71765
S-20641
—
Rev. B, 06-May-02
BLOCK DIAGRAM
–
+
V
IN
4
6
SD
8
3
GND
RFB2
RFB1
SENSE
–
+
+
1.215 V
V
REF
–
1
C
NOISE
–
+
+
2 A
To V
IN
5
2
7
V
OUT
ERROR
FIGURE 5.
6 M
60 mV
DELAY
DETAILED DESCRIPTION
The Si9185 is a low drop out, low quiescent current, and very
linear regulator family with very fast transient response. It is
primarily designed for battery powered applications where
battery run time is at a premium. The low quiescent current
allows extended standby time while low drop out voltage
enables the system to fully utilize battery power before
recharge. The Si9185 is a very fast regulator with bandwidth
exceeding 50 kHz while maintaining low quiescent current at
light load conditions. With this bandwidth, the Si9185 is the
fastest LDO available today. The Si9185 is stable with any
output capacitor type from 1 F to 10.0 F. However, X5R or
X7R ceramic capacitors are recommended for best output
noise and transient performance.
V
IN
V
IN
is the input supply pin. The bypass capacitor for this pin
is not critical as long as the input supply has low enough source
impedance. For practical circuits, a 1.0- F or larger ceramic
capacitor is recommended. When the source impedance is
not low enough and/or the source is several inches from the
Si9185, then a larger input bypass capacitor is needed. It is
required that the equivalent impedance (source impedance,
wire, and trace impedance in parallel with input bypass
capacitor impedance) must be smaller than the input
impedance of the Si9185 for stable operation. When the
source impedance, wire, and trace impedance are unknown,
it is recommended that an input bypass capacitor be used of
a value that is equal to or greater than the output capacitor.
V
OUT
V
OUT
is the output voltage of the regulator. Connect a bypass
capacitor from V
OUT
to ground. The output capacitor can be
any value from 1.0 F to 10.0 F. A ceramic capacitor with
X5R or X7R dielectric type is recommended for best output
noise, line transient, and load transient performance.
GND
Ground is the common ground connection for V
IN
and V
OUT
.
It is also the local ground connection for C
NOISE
, DELAY,
SENSE or ADJ, and SD.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI9185DMP-AD-T1-E3 | 功能描述:低壓差穩(wěn)壓器 - LDO Reg LDO Lin Adj Pos 1.215 to 5V 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(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 |
| SI91860 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:400-mA Smart Regulator for Network Interface Card |
| 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 |
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