Datasheet > LP3891ESX-1.8

LP3891ESX-1.8

更新时间： 2024-01-18 14:56:46

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

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技术参数
数据手册

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LP3891ESX-1.8 技术参数

生命周期：	Obsolete	零件包装代码：	D2PAK
包装说明：	TO-263,	针数：	4
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	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：	2.2 V	JESD-30 代码：	R-PSSO-G5
长度：	10.16 mm	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：	1.854 V	最小输出电压 1：	1.746 V
标称输出电压 1：	1.8 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	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	端子形式：	GULL WING
端子节距：	1.7 mm	端子位置：	SINGLE
宽度：	8.64 mm

LP3891ESX-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

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与LP3891ESX-1.8相关器件

型号	品牌	获取价格	描述	数据表
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
LP3891ET-1.2/NOPB	ROCHESTER	获取价格	1.216V FIXED POSITIVE LDO REGULATOR, 0.4V DROPOUT, PZFM5, MOLDED, STAGGER BEND, TO-220, 5
LP3891ET-1.5	NSC	获取价格	0.8A Fast-Response Ultra Low Dropout Linear
LP3891ET-1.5/NOPB	TI	获取价格	1.5V FIXED POSITIVE LDO REGULATOR, 0.4V DROPOUT, PZFM5, MOLDED, STAGGER BEND, TO-220, 5 PI
LP3891ET-1.8	NSC	获取价格	0.8A Fast-Response Ultra Low Dropout Linear
LP3891ET-1.8/NOPB	TI	获取价格	1.8V FIXED POSITIVE LDO REGULATOR, 0.4V DROPOUT, PZFM5, MOLDED, STAGGER BEND, TO-220, 5 PI
LP3892	NSC	获取价格	1.5A Fast-Response Ultra Low Dropout Linear Regulators
LP3892	TI	获取价格	LP3892 1.5A Fast-Response Ultra Low Dropout Linear Regulators
LP3892EMR-1.2	TI	获取价格	LP3892 1.5A Fast-Response Ultra Low Dropout Linear Regulators

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