Datasheet > 8186

8186

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	78K
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LOW-DROPOUT, 3.3 V REGULATOR . HIGH EFFICIENCY

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8186 数据手册

8186

LOW-DROPOUT,

3.3 V REGULATOR

8186

LOW-DROPOUT, 3.3 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 A8186SLU 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 3.3 V output at up to 75 mA

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

worst-case conditions.

PRELIMINARY INFORMATION

(subject to change without notice)

January 12, 1995

SUB

A PMOS pass element provides a typical dropout voltage of only

85 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. An ENABLE input

gives the designer complete control over power up, standby, or power

down.

SUB

This device is supplied in a 6-lead small-outline plastic package

(similar to the SOT-89/TO-243AA) for surface-mount applications. The

A8186SLU is rated for operation over a temperature range of -20°C to

+85°C.

Dwg. PS-021-1

FEATURES AND BENEFITS

■ High Efficiency Provides Extended Battery Life

■ 85 mV Typical Dropout Voltage at I_O= 60 mA

■ 45 µA Typical Quiescent Current at V_I= 6 V

Less Than 1 µA “Sleep” Current

ABSOLUTE MAXIMUM RATINGS

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

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

Enable Input Voltage, V_E. . . . . . . . . . V_I

Operating Temperature Range,

■ Up to 150 mA Output Current

■ CMOS-Compatible ON/OFF Control

For Power-Up, Standby, or Shutdown

■ Internal Thermal Protection

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

†

Junction Temperature, T_J. . . +150°C

■ Surface-Mount Package

Storage Temperature Range,

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

APPLICATIONS

* 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.

■ Cordless and Cellular Telephones

■ Personal Data Assistants

■ Personal Communicators

■ Palmtop Computers

† 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: A8186SLU

12 3 4 5 6 7 8

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