Datasheet > LP3963ET-1.8

LP3963ET-1.8

更新时间： 2024-11-25 22:14:07

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
14页	254K
描述
3A Fast Ultra Low Dropout Linear Regulators

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中文翻译

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LP3963ET-1.8 数据手册

April 2000

LP3963/LP3966

3A Fast Ultra Low Dropout Linear Regulators

General Description

Features

n Ultra low dropout voltage

The LP3963/LP3966 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 fast to step

changes in load which makes them suitable for low voltage

microprocessor applications. The LP3963/LP3966 are de-

veloped on a CMOS process which allows low quiescent

current operation independent of output load current.This

CMOS process also allows the LP3963/LP3966 to operate

under extremely low dropout conditions.

n Low ground pin current

n Load regulation of 0.06%

n 15µA 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 (LP3963)

n Sense option improves better load regulation (LP3966)

n Extremely low output capacitor requirements

n Overtemperature/overcurrent protection

Dropout Voltage: Ultra low dropout voltage; typically 80mV

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

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

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

Shutdown Mode: Typically 15µA 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 (for LP3963).

SENSE: Sense pin improves regulation at remote loads.

(For LP3966)

n Post regulators

Precision Output Voltage: Multiple output voltage options

n High efficiency linear regulators

n Battery chargers

are available ranging from 1.2V to 5.0V and adjustable, with

a guaranteed accuracy of 1.5% at room temperature, and

3.0% over all conditions ( varying line, load, and tempera-

n Other battery powered applications

ture).

Typical Application Circuits

DS101267-1

# Minimum output capacitance is 10 µF to ensure stability over full load current range. More capacitance provides superior dynamic performance and additional

stability margin.

*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 applications sec-

tion for more information.

DS101267

www.national.com

12 3 4 5 6 7...14

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与LP3963ET-1.8相关器件

型号	品牌	获取价格	描述	数据表
LP3963ET-2.5	NSC	获取价格	3A Fast Ultra Low Dropout Linear Regulators
LP3963ET-2.5/NOPB	TI	获取价格	2.5V FIXED POSITIVE LDO REGULATOR, 1.2V DROPOUT, PSFM5, PLASTIC, TO-220, 5 PIN
LP3963ET-3.3	NSC	获取价格	3A Fast Ultra Low Dropout Linear Regulators
LP3963ET-3.3/NOPB	TI	获取价格	3.3V FIXED POSITIVE LDO REGULATOR, 1.2V DROPOUT, PSFM5, PLASTIC, TO-220, 5 PIN
LP3963ET-5.0	NSC	获取价格	3A Fast Ultra Low Dropout Linear Regulators
LP3964	NSC	获取价格	800mA Fast Ultra Low Dropout Linear Regulators
LP3964	TI	获取价格	LP396x 800-mA Fast Ultra-Low-Dropout Linear Regulators
LP3964	HGSEMI	获取价格	800mA 超低压降 VLDO 线性稳压器
LP3964EMP-1.8	NSC	获取价格	800mA Fast Ultra Low Dropout Linear Regulators
LP3964EMP-1.8	TI	获取价格	1.8V FIXED POSITIVE LDO REGULATOR, 0.7V DROPOUT, PDSO5, SOT-223, 5 PIN

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