Datasheet > LP3873ESX-1.8

LP3873ESX-1.8

更新时间： 2024-11-22 22:31:07

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
16页	362K
描述
3A Fast Ultra Low Dropout Linear Regulators

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LP3873ESX-1.8 数据手册

September 2003

LP3873/LP3876

3A Fast Ultra Low Dropout Linear Regulators

General Description

Features

n Ultra low dropout voltage

n Low ground pin current

The LP3873/LP3876 series of fast ultra low-dropout linear

regulators operate from a +2.5V to +7.0V input supply. Wide

range of preset output voltage options are available. These

ultra low dropout linear regulators respond very quickly to

step changes in load, which makes them suitable for low

voltage microprocessor applications. The LP3873/LP3876

are developed on a CMOS process which allows low quies-

cent current operation independent of output load current.

This CMOS process also allows the LP3873/LP3876 to op-

erate under extremely low dropout conditions.

n Load regulation of 0.08%

n 1µA quiescent current in shutdown mode

n Guaranteed output current of 3A DC

n Available in TO-263 and TO-220 packages

n Output voltage accuracy 1.5%

n Error flag indicates output status

n Sense option improves load regulation

n Minimum output capacitor requirements

n Overtemperature/overcurrent protection

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

Dropout Voltage: Ultra low dropout voltage; typically 80mV

at 300mA load current and 800mV at 3A load current.

Ground Pin Current: Typically 6mA at 3A load current.

Shutdown Mode: Typically 1µA quiescent current when the

shutdown pin is pulled low.

Applications

n Microprocessor power supplies

n GTL, GTL+, BTL, and SSTL bus terminators

n Power supplies for DSPs

n SCSI terminator

Error Flag: Error flag goes low when the output voltage

drops 10% below nominal value.

SENSE: Sense pin improves regulation at remote loads.

Precision Output Voltage: Multiple output voltage options

are available ranging from 1.8V to 5.0V with a guaranteed

accuracy of 1.5% at room temperature, and 3.0% over all

conditions (varying line, load, and temperature).

n Post regulators

n High efficiency linear regulators

n Battery chargers

n Other battery powered applications

Typical Application Circuits

20060501

*SD and ERROR pins must be pulled high through a 10kΩ pull-up resistor. Connect the ERROR pin to ground if this function is not used. See application hints

for more information.

DS200605

www.national.com

12 3 4 5 6 7...16

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LP3873ESX-1.8 替代型号

型号	品牌	替代类型	描述	数据表
LP3873ESX-1.8/NOPB	TI	功能相似	3A Fast Ultra Low Dropout Linear Regulators
LP3873ES-1.8	NSC	功能相似	3A Fast Ultra Low Dropout Linear Regulators

与LP3873ESX-1.8相关器件

型号	品牌	获取价格	描述	数据表
LP3873ESX-1.8/NOPB	TI	获取价格	3A Fast Ultra Low Dropout Linear Regulators
LP3873ESX-2.5	NSC	获取价格	3A Fast Ultra Low Dropout Linear Regulators
LP3873ESX-2.5/NOPB	TI	获取价格	2.5V FIXED POSITIVE LDO REGULATOR, 1.2V DROPOUT, PSSO5, TO-263, 5 PIN
LP3873ESX-3.3	NSC	获取价格	3A Fast Ultra Low Dropout Linear Regulators
LP3873ESX-3.3	TI	获取价格	3A Fast Ultra Low Dropout Linear Regulators
LP3873ESX-3.3/NOPB	ROCHESTER	获取价格	3.3V FIXED POSITIVE LDO REGULATOR, 1.2V DROPOUT, PSSO5, TO-263, 5 PIN
LP3873ESX-3.3/NOPB	TI	获取价格	3A Fast Ultra Low Dropout Linear Regulators
LP3873ESX-5.0	NSC	获取价格	3A Fast Ultra Low Dropout Linear Regulators
LP3873ESX-5.0/NOPB	NSC	获取价格	IC VREG 5 V FIXED POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PSSO5, TO-263, 5 PIN, Fixed Posit
LP3873ESX-5.0/NOPB	TI	获取价格	3A Fast Ultra Low Dropout Linear Regulators

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