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參數(shù)資料
| 型號(hào)： | Si91871DMP-27-T1 |
| 廠(chǎng)商： | Vishay Intertechnology,Inc. |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | HEATSINK TO220 VER MNT W/TAB.69,3 |
| 中文描述： | 300 - mA的超低噪聲LDO穩(wěn)壓器排放的選項(xiàng) |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大小： | 183K |
| 代理商： | SI91871DMP-27-T1 |
Si91871
Vishay Siliconix
New Product
Document Number: 72012
S-03156—Rev. B, 03-Feb-03
www.vishay.com
1
300-mA Ultra Low-Noise LDO Regulator
With Discharge Option
FEATURES
Ultra Low Dropout—300 mV at 300-mA Load
Ultra Low Noise—30 V
RMS
(10-Hz to 100-kHz)
Shutdown Control
130- A Ground Current at 300-mA Load
1.5% Guaranteed Output Voltage Accuracy
400-mA Peak Output Current Capability
Uses Low ESR Ceramic Capacitors
Fast Start-Up (50 s)
Fast Line and Load Transient Response (
1- A Maximum Shutdown Current
Output Current Limit
Reverse Battery Protection
Built-in Short Circuit and Thermal Protection
30 s)
Output, Auto-Discharge In Shutdown Mode
Fixed 1.2, 1.5, 1.8, 2.0, 2.2, 2.5, 2.6, 2.7, 2.8, 2.85, 2.9,
3.0, 3.3, 3.5, 3.6, 5.0-V Output Voltage Options
MLP33-5 PowerPAK Package
APPLICATIONS
Cellular Phones, Wireless Handsets
Noise-Sensitive Electronic Systems, Laptop and
Palmtop Computers
PDAs
Pagers
Digital Cameras
MP3 Player
Wireless Modem
DESCRIPTION
The Si91871 is a 300-mA CMOS LDO (low dropout) voltage
regulator. It is the perfect choice for low voltage, low power
applications. An ultra low ground current makes this part
attractive for battery operated power systems. The Si91871
also offers ultra low dropout voltage to prolong battery life in
portable electronics. Systems requiring a quiet voltage
source, such as RF applications, will benefit from the
Si91871’s ultra low output noise. An external noise bypass
capacitor connected to the device’s BP pin can further reduce
the noise level. The Si91871 is designed to maintain regulation
while delivering 400-mA peak current, making it ideal for
systems that have a high surge current upon turn-on.
For better transient response and regulation, an active
pull-down circuit is built into the Si91871 to clamp the output
voltage when it rises beyond normal regulation. The Si91871
automatically discharges the output voltage by connecting the
output to ground through a 100- n-channel MOSFET when
the device is put in shutdown mode.
The Si91871 features reverse battery protection to limit
reverse current flow to approximately 1- A in the event
reversed battery is applied at the input, thus preventing
damage to the IC.
The Si91871 is available in the 5-pin MLP33 PowerPAK
package and is specified to operate over the industrial
temperature range of -40 C to 85
TYPICAL APPLICATION CIRCUIT
MLP33-5
Si91871
V
IN
GND
SD
V
OUT
V
IN
SD
V
OUT
2.2 F
BP
10 nF
2.2 F
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| Si91871DMP-28-T1 | HEATSINK TO220 VER MNT W/TAB.69,1 |
| Si91871DMP-285-T1 | HEATSINK TO-220 VERT MNT W/TAB |
| Si91871DMP-29-T1 | Heat Sink; Package/Case:TO-220; Thermal Resistance:16 C/W; Mounting Type:Through Hole; Length:9.02mm; Height:34.93mm; Width:21.84mm; Body Material:Aluminum; Color:Black; Leaded Process Compatible:Yes RoHS Compliant: Yes |
| Si91871DMP-30-T1 | HEATSINK,PLG-IN,MODEL#574902,T |
| Si91871DMP-33-T1 | HEATSINK TO-220 VERT MNT W/TAB |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI91871DMP-285-T1 | 制造商:VISHAY 制造商全稱(chēng):Vishay Siliconix 功能描述:300-mA Ultra Low-Noise LDO Regulator With Discharge Option |
| SI91871DMP-28-E3 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA LDO 2.8V 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(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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91871DMP-28-T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA LDO 2.8V 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(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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91871DMP-29-T1 | 制造商:VISHAY 制造商全稱(chēng):Vishay Siliconix 功能描述:300-mA Ultra Low-Noise LDO Regulator With Discharge Option |
| SI91871DMP-30-E3 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA LDO 3.0V 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(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(lèi)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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