Datasheet > LP3891ES-1.8

LP3891ES-1.8

更新时间： 2024-11-13 22:09:43

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
12页	305K
描述
0.8A Fast-Response Ultra Low Dropout Linear

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LP3891ES-1.8 数据手册

September 2003

LP3891

0.8A Fast-Response Ultra Low Dropout Linear

Regulators

General Description

Features

n Ultra low dropout voltage (100mV 0.8A typ)

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 regula-

tors, the CMOS architectutre consumes extremely low qui-

escent current at any output load current. The use of an

n Low ground pin current

n Load regulation of 0.04%/A

n 60 nA typical quiescent current in shutdown

n 1.5% output accuracy (25˚C)

n TO-220, TO-263 packages

n Over temperature/over current protection

n −40˚C to +125˚C junction temperature range

N-MOS power transistor results in wide bandwidth, yet mini- Applications

mum external capacitance is required to maintain loop sta-

bility.

n DSP Power Supplies

n Server Core and I/O Supplies

n PC Add-in-Cards

n Local Regulators in Set-Top Boxes

n Microcontroller Power Supplies

n High Efficiency Power Supplies

n SMPS Post-Regulators

The fast transient response of these devices makes them

suitable for use in powering DSP, Microcontroller Core volt-

ages and Switch Mode Power Supply post regulators. The

parts are available in TO-220 and TO-263 packages.

Dropout Voltage: 100 mV (typ) 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 accu-

racy.

Typical Application Circuit

20069501

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.

Connection Diagrams

20069502

20069503

TO-220, Top View

TO-263, Top View

DS200695

www.national.com

12 3 4 5 6 7...12

中文翻译

下载PDF

与LP3891ES-1.8相关器件

型号	品牌	获取价格	描述	数据表
LP3891ESX-1.2	NSC	获取价格	0.8A Fast-Response Ultra Low Dropout Linear
LP3891ESX-1.2	TI	获取价格	LP3891 0.8A Fast-Response Ultra Low Dropout Linear Regulators
LP3891ESX-1.2/NOPB	ROCHESTER	获取价格	1.216V FIXED POSITIVE LDO REGULATOR, 0.4V DROPOUT, PSSO5, MOLDED, TO-263, 5 PIN
LP3891ESX-1.2/NOPB	TI	获取价格	0.8A Fast-Response Ultra Low Dropout Linear Regulators
LP3891ESX-1.5	TI	获取价格	LP3891 0.8A Fast-Response Ultra Low Dropout Linear Regulators
LP3891ESX-1.5	NSC	获取价格	0.8A Fast-Response Ultra Low Dropout Linear
LP3891ESX-1.5/NOPB	TI	获取价格	具有使能功能的 800mA、超低压降稳压器 \| KTT \| 5 \| -40 to 125
LP3891ESX-1.8	NSC	获取价格	0.8A Fast-Response Ultra Low Dropout Linear
LP3891ET-1.2	NSC	获取价格	0.8A Fast-Response Ultra Low Dropout Linear
LP3891ET-1.2	ROCHESTER	获取价格	1.216V FIXED POSITIVE LDO REGULATOR, 0.4V DROPOUT, PZFM5, MOLDED, STAGGER BEND, TO-220, 5

与LP3891ES-1.8相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

5
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

2
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

29
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

12

产品中心

服务支持

精选活动

关于我们

帮助中心

LP3891ES-1.8

LP3891ES-1.8 数据手册

与LP3891ES-1.8相关器件

与LP3891ES-1.8相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LP3891ES-1.8

LP3891ES-1.8 数据手册

与LP3891ES-1.8相关器件

与LP3891ES-1.8相关文章

您还可以找

您在本页遇到什么问题？