Datasheet > LP3856ESX-3.3

LP3856ESX-3.3

更新时间： 2024-11-14 22:46:59

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
18页	414K
描述
3A Fast Response Ultra Low Dropout Linear Regulators

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LP3856ESX-3.3 数据手册

March 2004

LP3853/LP3856

3A Fast Response Ultra Low Dropout Linear Regulators

General Description

Features

n Ultra low dropout voltage

The LP3853/LP3856 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 LP3853/LP3856

are developed on a CMOS process which allows low quies-

cent current operation independent of output load current.

This CMOS process also allows the LP3853/LP3856 to op-

erate under extremely low dropout conditions.

n Stable with selected ceramic capacitors

n Low ground pin current

n Load regulation of 0.08%

n 10nA 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 Overtemperature/overcurrent protection

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

Dropout Voltage: Ultra low dropout voltage; typically 39mV

at 300mA load current and 390mV at 3A load current.

Ground Pin Current: Typically 4mA at 3A load current.

Shutdown Mode: Typically 10nA quiescent current when

the shutdown pin is pulled low.

Applications

n Microprocessor power supplies

n Stable with ceramic output capacitors

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

20030901

**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.

DS200309

www.national.com

12 3 4 5 6 7...18

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与LP3856ESX-3.3相关器件

型号	品牌	获取价格	描述	数据表
LP3856ESX-3.3/NOPB	TI	获取价格	具有使能功能的 3A、7V、超低压降稳压器 \| KTT \| 5 \| -40 to 125
LP3856ESX-5.0	NSC	获取价格	3A Fast Response Ultra Low Dropout Linear Regulators
LP3856ESX-5.0/NOPB	TI	获取价格	具有使能功能的 3A、7V、超低压降稳压器 \| KTT \| 5 \| -40 to 125
LP3856ESX-ADJ	NSC	获取价格	3A Fast Response Ultra Low Dropout Linear Regulators
LP3856ESX-ADJ	TI	获取价格	ADJUSTABLE POSITIVE LDO REGULATOR, 0.7V DROPOUT, PSSO5, TO-263, 5 PIN
LP3856ESX-ADJ/NOPB	TI	获取价格	3A Fast Response Ultra Low Dropout Linear Regulators
LP3856ET-1.8	NSC	获取价格	3A Fast Response Ultra Low Dropout Linear Regulators
LP3856ET-2.5	ROCHESTER	获取价格	2.5V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PSFM5, TO-220, 5 PIN
LP3856ET-2.5	NSC	获取价格	3A Fast Response Ultra Low Dropout Linear Regulators
LP3856ET-2.5/NOPB	TI	获取价格	具有使能功能的 3A、7V、超低压降稳压器 \| NDH \| 5 \| -40 to 125

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