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SI91841DT-18-T1 PDF预览

SI91841DT-18-T1

更新时间： 2024-11-04 22:09:39
品牌 Logo 应用领域
威世 - VISHAY 稳压器光电二极管
页数 文件大小 规格书
9页 122K
描述
150-mA Ultra Low-Noise LDO Regulator With Discharge Option

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SI91841DT-18-T1 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
Reach Compliance Code：unknown风险等级：5.61
Is Samacsys：N可调性：FIXED
标称回动电压 1：0.19 V最大绝对输入电压：6.5 V
JESD-30 代码：R-PDSO-G5JESD-609代码：e0
最大电网调整率：0.00324%输出次数：1
端子数量：5工作温度TJ-Max：150 °C
最大输出电流 1：0.15 A标称输出电压 1：1.8 V
封装主体材料：PLASTIC/EPOXY封装代码：TSOP
封装等效代码：TSOP5/6,.11,37封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE包装方法：TAPE AND REEL
认证状态：Not Qualified子类别：Other Regulators
表面贴装：YES技术：CMOS
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.95 mm端子位置：DUAL
最大电压容差：2.5%Base Number Matches：1

SI91841DT-18-T1 数据手册

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Si91841/3  
Vishay Siliconix  
150-mA Ultra Low-Noise LDO Regulator  
With Discharge Option  
FEATURES  
D Ultra Low Dropout—130 mV at 150-mA Load  
D Si91841: Output, Auto-Discharge In Shutdown Mode  
D Si91843: Output, No-Discharge In Shutdown Mode  
D Ultra Low Noise—30 mV(rms) (10-Hz to 100-kHz  
Bandwidth)  
D Shutdown Control  
D Fixed 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  
D Thin SOT23-5 Package  
D 110-mA Ground Current at 150-mA Load  
D 1.5% Guaranteed Output Voltage Accuracy  
D 300-mA Peak Output Current Capability  
D Uses Low ESR Ceramic Capacitors  
D Fast Start-Up (50 ms)  
APPLICATIONS  
D Cellular Phones, Wireless Handsets  
D Fast Line and Load Transient Response (v 30 ms)  
D 1-mA Maximum Shutdown Current  
D Output Current Limit  
D Noise-Sensitive Electronic Systems, Laptop and  
Palmtop Computers  
D PDAs  
D Reverse Battery Protection  
D Pagers  
D Built-in Short Circuit and Thermal Protection  
D Digital Cameras  
D MP3 Player  
D Wireless Modem  
DESCRIPTION  
The Si91841/3 is a 150-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 Si91841/3  
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  
Si91841/3’s ultra low output noise. An external noise bypass  
capacitor connected to the device’s BP pin can further reduce  
the noise level. The Si91841/3 is designed to maintain  
regulation while delivering 300-mA peak current, making it  
ideal for systems that have a high surge current upon turn-on.  
pull-down circuit is built into the Si91841/3 to clamp the output  
voltage when it rises beyond normal regulation. The Si91841  
automatically discharges the output voltage by connecting the  
output to ground through a 100-W n-channel MOSFET when  
the device is put in shutdown mode.  
The Si91841/3 features reverse battery protection to limit  
reverse current flow to approximately 1-mA in the event  
reversed battery is applied at the input, thus preventing  
damage to the IC.  
The Si91841/3 is available in both standard and lead (Pb)-free  
packages.  
For better transient response and regulation, an active  
TYPICAL APPLICATION CIRCUIT  
Si91841/3  
5
4
V
1
V
V
V
OUT  
IN  
IN  
OUT  
1 mF  
1 mF  
2
3
GND  
SD  
SD  
BP  
10 nF  
Thin SOT-23, 5-Lead  
Document Number: 71447  
S-40592—Rev. C, 29-Mar-04  
www.vishay.com  
1
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