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LP3891ESX-1.2/NOPB PDF预览

LP3891ESX-1.2/NOPB

更新时间： 2024-01-22 01:12:54
品牌 Logo 应用领域
德州仪器 - TI 输出元件调节器
页数 文件大小 规格书
19页 1098K
描述
0.8A Fast-Response Ultra Low Dropout Linear Regulators

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LP3891ESX-1.2/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：D2PAK
包装说明：MOLDED, TO-263, 5 PIN针数：4
Reach Compliance Code：unknown风险等级：5.66
最大回动电压 1：0.4 V最大输入电压：5.5 V
最小输入电压：1.616 VJESD-30 代码：R-PSSO-G5
JESD-609代码：e3长度：10.16 mm
湿度敏感等级：3功能数量：1
端子数量：5工作温度TJ-Max：125 °C
工作温度TJ-Min：-40 °C最大输出电流 1：0.8 A
最大输出电压 1：1.246 V最小输出电压 1：1.186 V
标称输出电压 1：1.216 V封装主体材料：PLASTIC/EPOXY
封装代码：TO-263封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：245
调节器类型：FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR座面最大高度：4.8 mm
表面贴装：YES技术：CMOS
端子面层：TIN端子形式：GULL WING
端子节距：1.7 mm端子位置：SINGLE
处于峰值回流温度下的最长时间：30宽度：8.635 mm
Base Number Matches：1

LP3891ESX-1.2/NOPB 数据手册

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LP3891  
www.ti.com  
SNVS235D –SEPTEMBER 2003–REVISED APRIL 2013  
LP3891 0.8A Fast-Response Ultra Low Dropout Linear Regulators  
Check for Samples: LP3891  
1
FEATURES  
DESCRIPTION  
The LP3891 is a high current, fast response regulator  
which can maintain output voltage regulation with  
minimum input to output voltage drop. Fabricated on  
a CMOS process, the device operates from two input  
voltages: Vbias provides voltage to drive the gate of  
the N-MOS power transistor, while Vin is the input  
voltage which supplies power to the load. The use of  
an external bias rail allows the part to operate from  
ultra low Vin voltages. Unlike bipolar regulators, the  
CMOS architecture consumes extremely low  
quiescent current at any output load current. The use  
of an N-MOS power transistor results in wide  
bandwidth, yet minimum external capacitance is  
required to maintain loop stability.  
2
•
•
•
•
•
•
Ultra Low Dropout Voltage (100mV at 0.8A typ)  
Low Ground Pin Current  
Load Regulation of 0.04%/A  
60 nA Typical Quiescent Current in Shutdown  
1.5% Output Accuracy (25°C)  
TO-220, DDPAK/TO-263 and SO PowerPAD-8  
Packages  
•
•
Over Temperature/Over Current Protection  
−40°C to +125°C Junction Temperature Range  
APPLICATIONS  
•
•
•
•
•
•
•
DSP Power Supplies  
The fast transient response of these devices makes  
them suitable for use in powering DSP,  
Microcontroller Core voltages and Switch Mode  
Power Supply post regulators. The parts are available  
in TO-220, DDPAK/TO-263 and SO PowerPAD-8  
packages.  
Server Core and I/O Supplies  
PC Add-in-Cards  
Local Regulators in Set-Top Boxes  
Microcontroller Power Supplies  
High Efficiency Power Supplies  
SMPS Post-Regulators  
Dropout Voltage: 100 mV (typ) at 0.8A load current.  
Ground Pin Current: 3 mA (typ) at full load.  
Shutdown Current: 60 nA (typ) when S/D pin is low.  
Precision Output Voltage: 1.5% room temperature  
accuracy.  
TYPICAL APPLICATION CIRCUIT  
At least 10 µF of input and output capacitance is required for stability.  
*Tantalum capacitors are recommended. Aluminum electrolytic capacitors may be used for restricted temperature  
range. See application hints.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2003–2013, Texas Instruments Incorporated  
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LP3891ESX-1.2/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LP3891ES-1.2/NOPB TI

类似代替

 0.8A Fast-Response Ultra Low Dropout Linear Regulators
LP3891ESX-1.2 TI

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 LP3891 0.8A Fast-Response Ultra Low Dropout Linear Regulators

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