Datasheet > LP3881EMRX-1.8

LP3881EMRX-1.8

更新时间： 2024-09-28 04:44:07

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
12页	748K
描述
0.8A Fast-Response Ultra Low Dropout Linear Regulators

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LP3881EMRX-1.8 数据手册

June 2006

LP3881

0.8A Fast-Response Ultra Low Dropout Linear

Regulators

General Description

Features

n Ultra low dropout voltage (75 mV 0.8A typ)

The LP3881 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 architecture consumes extremely low quies-

cent 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 and PSOP-8 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, TO-263 and PSOP-8 pack-

ages.

Dropout Voltage: 75 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

20063001

At least 4.7 µF of input and output capacitance is required for stability.

DS200630

www.national.com

12 3 4 5 6 7...12

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与LP3881EMRX-1.8相关器件

型号	品牌	获取价格	描述	数据表
LP3881EMRX-1.8/NOPB	NSC	获取价格	IC VREG 1.8 V FIXED POSITIVE LDO REGULATOR, 0.19 V DROPOUT, PDSO8, MOLDED, PSOP-8, Fixed P
LP3881ES-1.2	NSC	获取价格	0.8A Fast-Response Ultra Low Dropout Linear
LP3881ES-1.2/NOPB	TI	获取价格	具有使能功能的 800mA、低输入电压 (1.291V)、超低压降稳压器 \| KTT \|
LP3881ES-1.2/NOPB	ROCHESTER	获取价格	1.216V FIXED POSITIVE LDO REGULATOR, 0.16V DROPOUT, PSSO5, MOLDED, TO-263, 5 PIN
LP3881ES-1.5	NSC	获取价格	0.8A Fast-Response Ultra Low Dropout Linear
LP3881ES-1.5	TI	获取价格	1.5V FIXED POSITIVE LDO REGULATOR, 0.16V DROPOUT, PSSO5, TO-263, 5 PIN
LP3881ES-1.5/NOPB	NSC	获取价格	IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 0.16 V DROPOUT, PSSO5, MOLDED, TO-263, 5 PIN,
LP3881ES-1.5/NOPB	TI	获取价格	具有使能功能的 800mA、低输入电压 (1.291V)、超低压降稳压器 \| KTT \|
LP3881ES-1.8	NSC	获取价格	0.8A Fast-Response Ultra Low Dropout Linear
LP3881ES-1.8/NOPB	NSC	获取价格	IC VREG 1.8 V FIXED POSITIVE LDO REGULATOR, 0.16 V DROPOUT, PSSO5, MOLDED, TO-263, 5 PIN,

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