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參數(shù)資料
| 型號： | Si91821DH-28-T1-E3 |
| 廠商： | Vishay Intertechnology,Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Micropower 300-mA CMOS LDO Regulator With Error Flag |
| 中文描述： | 微300毫安的CMOS LDO穩(wěn)壓器國旗錯誤 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 136K |
| 代理商： | SI91821DH-28-T1-E3 |
Available
Si91821
Vishay Siliconix
Document Number: 71614
S-51147–Rev. E, 20-Jun-05
www.vishay.com
1
Micropower 300-mA CMOS LDO Regulator With Error Flag
FEATURES
Input Voltage: 2.35
6.0 V
Fixed 1.8-V, 2.5-V, 2.8-V, 3.0-V, 3.3-V, 5.0-V, or
Adjustable Output Voltage Options
Low 120-mV Dropout at 300-mA Load
Guaranteed 300-mA Output Current
500-mA Peak Output Current Capability
Uses Low ESR Ceramic Output Capacitor
Fast Load and Line Transient Response
Only 100- V(rms) Noise With Noise Bypass
Capacitor
1- A Maximum Shutdown Current
Built-in Short Circuit and Thermal Protection
Out-Of-Regulation Error Flag (Power_Good)
APPLICATIONS
Cellular Phones
Laptop and Palm Computers
PDA, Digital Still Cameras
DESCRIPTION
The Si91821 is a 300-mA CMOS LDO (low dropout) voltage
regulator. The device features ultra low ground current and
dropout voltage to prolong battery life in portable electronics.
The Si91821 offers line and load transient response and ripple
rejection superior to that of bipolar or BiCMOS LDO regulators.
The device is designed to maintain regulation while delivering
500-mA peak current. This is useful for systems that have high
surge current upon turn-on. The Si91821 is designed to drive
the lower cost ceramic, as well as tantalum, output capacitors.
The device is guaranteed stable from maximum load current
down to 0-mA load. In addition, an external noise bypass
capacitor connected to the device’s C
NOISE
pin will lower the
LDO’s output noise for low noise applications.
The Si91821 also includes an out-of-regulation error flag.
When the output voltage is 5% below its nominal output
voltage, the error flag output goes low.
The Si91821 is available in both standard and lead (Pb)-free
MSOP-8 packages and is specified to operate over the
industrial temperature range of
40 C to 85 C.
TYPICAL APPLICATIONS CIRCUITS
Figure 3.
Fixed Output, Low Noise, Full Features Application
C
NOISE
SD
7
8
ERROR
2
1, 4
GND
SET
6
5
V
IN
V
OUT
3
GND
V
IN
2.2 F
Si91821
ON/OFF
2.2 F
V
OUT
POWER_GOOD
1 M
0.033 F
Figure 1.
Fixed Output
Figure 2..
Adjustable Output
V
OUT
C
NOISE
SD
7
8
ERROR
2
1, 4
GND
SET
6
5
V
IN
V
OUT
3
GND
V
IN
2.2 F
Si91821
2.2 F
Optional
V
OUT
C
NOISE
SD
7
8
ERROR
2
1, 4
GND
SET
6
5
V
IN
V
OUT
3
GND
V
IN
2.2 F
Si91821
2.2 F
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PDF描述 |
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| Si91821DH-30-T1 | Micropower 300-mA CMOS LDO Regulator With Error Flag |
| Si91821DH-30-T1-E3 | Micropower 300-mA CMOS LDO Regulator With Error Flag |
| Si91821DH-33-T1 | RF/Coaxial Connector; RF Coax Type:BNC; Impedance:50ohm; Body Style:Straight Jack; Contact Material:Phosphor Bronze; Insulator Material:Teflon; Mounting Type:PC Board Edge RoHS Compliant: Yes |
| Si91821DH-33-T1-E3 | Micropower 300-mA CMOS LDO Regulator With Error Flag |
| Si91821DH-50-T1 | Micropower 300-mA CMOS LDO Regulator With Error Flag |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI91821DH-30-T1 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Micropower 300-mA CMOS LDO Regulator With Error Flag |
| SI91821DH-30-T1-E3 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Micropower 300-mA CMOS LDO Regulator With Error Flag |
| SI91821DH-33-T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA 3.3V CMOS LDO w/Error Flag 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91821DH-33-T1-E3 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA 3.3V CMOS LDO w/Error Flag 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(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91821DH-50-T1 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Micropower 300-mA CMOS LDO Regulator With Error Flag |
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