Datasheet > 8184

8184

更新时间： 2024-11-13 22:23:47

品牌	Logo	应用领域
急速微 - ALLEGRO		稳压器功效
页数	文件大小	规格书
8页	120K
描述
LOW-DROPOUT, 3 V REGULATOR . HIGH EFFICIENCY

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8184 数据手册

8184

LOW-DROPOUT, 3 V REGULATOR

— HIGH EFFICIENCY

Designed specifically to meet the requirement for extended opera-

tion of battery-powered equipment such as cordless and cellular

telephones, the A8184SLT voltage regulator offers the reduced dropout

voltage and quiescent current essential for maximum battery life.

Applicable also to palmtop computers and personal data assistants, the

device delivers a regulated, continuous 3 V output at up to 75 mA under

normal operating conditions, or to 150 mA (transient) under worst-case

conditions.

3 V

A PMOS pass element provides a typical dropout voltage of only

90 mV at 60 mA of load current. The low dropout voltage permits

deeper battery discharge before output regulation is lost. Furthermore,

quiescent current does not increase as the dropout voltage is ap-

proached, an ideal feature in standby/resume power systems where

data integrity is crucial. Regulator accuracy and excellent temperature

characteristics are provided by a bandgap reference.

This device is supplied in a small-outline plastic transistor package

(SOT-89/TO-243AA) for surface-mount applications. The A8184SLT is

rated for operation over a temperature range of -20°C to +85°C. A

similar device with an ENABLE input for control over sequential power

up, standby, or power down is the A8183SLU.

Dwg. PS-022

FEATURES AND BENEFITS

I High Efficiency Provides Extended Battery Life

I 90 mV Typical Dropout Voltage at I_O= 60 mA

I 45 µA Typical Quiescent Current at V_I= 6 V

I Up to 150 mA Output Current

ABSOLUTE MAXIMUM RATINGS

Input Voltage, V_I. . . . . . . . . . . . . . 10 V

Output Current, I_O. . . . . . . . . 150 mA*

Operating Temperature Range,

I Internal Thermal Protection

I Surface-Mount Package

T_A. . . . . . . . . . . . . -20°C to +85°C

Junction Temperature, T_J. . . +150°C

†

APPLICATIONS

Storage Temperature Range,

I Cordless and Cellular Telephones

I Personal Data Assistants

I Personal Communicators

I Palmtop Computers

T_S. . . . . . . . . . . . -40°C to +150°C

* Output current rating is limited by input voltage,

duty cycle, and ambient temperature. Under

any set of conditions, do not exceed a junction

temperature of +150°C. See next page.

† Fault conditions that produce excessive junction

temperature will activate device thermal

shutdown circuitry. These conditions can be

tolerated but should be avoided.

Always order by complete part number: A8184SLT

12 3 4 5 6 7 8

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