Datasheet > LP3984

LP3984

更新时间： 2024-11-15 00:01:07

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	285K
描述
Micropower, 150mA Ultra Low-Dropout CMOS Voltage Regulator in Subminiature 4-I/O micro SMD Package

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LP3984 数据手册

November 2001

LP3984

Micropower, 150mA Ultra Low-Dropout CMOS Voltage

Regulator in Subminiature 4-I/O micro SMD Package

n 60dB PSRR at 1kHz, 40dB at 10kHz 3.1V_IN

General Description

The LP3984 is designed for portable and wireless applica-

tions with demanding performance and space requirements.

n ≤1.2µA quiescent current when shut down

n Fast Turn-On time: 20 µs (typ.)

n 75mV typ dropout with 150mA load

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

n 1.5V, 1.8V, 2.0V, and 3.1V

The LP3984’s performance is optimized for battery powered

systems to deliver extremely low dropout voltage and low

quiescent current. Regulator ground current increases only

slightly in dropout, further prolonging the battery life.

Features

Power supply rejection is better than 60 dB at low frequen-

cies and starts to roll off at 10 kHz. High power supply

rejection is maintained down to lower input voltage levels

common to battery operated circuits.

n Miniature 4-I/O micro SMD and SOT-23-5 package

n Logic controlled enable

n Stable with tantalum capacitors

n 1 µF Tantalum output capacitor

n Fast turn-on

The device is ideal for mobile phone and similar battery

powered wireless applications. It provides up to 150 mA,

from a 2.5V to 6V input, consuming less than 1.2µA in

disable mode and has fast turn-on time less than 20µs.

n Thermal shutdown and short-circuit current limit

The LP3984 is available in micro SMD and 5 pin SOT-23

package. Performance is specified for −40˚C to +125˚C

temperature range and is available in 1.5V, 1.8V, 2.0V, and

3.1V output voltages. For other output voltage options from

1.5V to 3.5V, please contact National Semiconductor sales

office.

Applications

n CDMA cellular handsets

n Wideband CDMA cellular handsets

n GSM cellular handsets

n Portable information appliances

Key Specifications

n 2.5 to 6.0V input range

n 150mA guaranteed output

Typical Application Circuit

20020402

Note: Pin Numbers in parenthesis indicate micro SMD package.

DS200204

www.national.com

12 3 4 5 6 7...12

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与LP3984相关器件

型号	品牌	获取价格	描述	数据表
LP3984-12B5F		获取价格	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
LP3984-15B5F		获取价格	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
LP3984-18B5F		获取价格	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
LP3984-25B5F		获取价格	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
LP3984-28B5F		获取价格	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
LP3984-2HB5F		获取价格	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
LP3984-30B5F		获取价格	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
LP3984-33B5F		获取价格	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
LP3984IBP-1.5	NSC	获取价格	Micropower, 150mA Ultra Low-Dropout CMOS Voltage Regulator in Subminiature 4-I/O micro SMD
LP3984IBP-1.5/NOPB	TI	获取价格	1.5V FIXED POSITIVE LDO REGULATOR, 0.12V DROPOUT, PBGA4, 0.995 MM HEIGHT, MICRO, BUMP, SMD

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