8183

Features:

High Efficiency Provides Extended Battery Life
90 mV Typical Dropout Voltage at I_O  = 60 mA
45 A Typical Quiescent Current at V_I = 6 V
Less Than 1 A "Sleep" Current
Up to 150 mA Output Current
CMOS-Compatible ON/OFF Control
For Power-Up, Standby, or Shutdown
UED PRODInternal Thermal Protection



Application

Cordless and Cellular Telephones
Personal Data Assistants
Personal Communicators
Palmtop Computers


Pinout




Specifications

Input Voltage, V_I . . . . . . . . . . . . . .  10 V
Output Current,   I_O . . . . . . . . . . . .150mA*
Enable Input Voltage, V_E . . . . . . . . .   V_I
Operating Temperature Range.
      T _A. . . . . . . . . . . . .  .. .-20to +85
Junction Temperature, T_J . . . . .. . +150
Storage Temperature Range,
      T_S . . . . . . . . . . . .  . ...-40 to +150

* Output current rating is limited by inputDISCONT voltage, duty cycle, and ambient tempera-ture.  Under any set of conditions, do not exceed a junction temperature of +150°C.- FOR See following pages.
+ Fault conditions that produce excessive junction temperature will activate device thermal shutdown circuitry.  These condi- tions can be tolerated but should be avoided.



Description

Designed specifically to meet the requirement for extended opera-tion of battery-powered equipment such as cordless and cellular telephones, the A8183SLU voltage regulator offers the reduced dropout voltage and quiescent current essential for maximum battery life. Applicable also to palmtop computers and personal data assistants, A8183SLU 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.

A8183SLU 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 wheredata 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.

A8183SLU is supplied in a 6-lead small-outline plastic package(similar to the SOT-89/TO-243AA) for surface-mount applications.  TheA8183SLU is rated for operation over a temperature range of -20°C to+85°C.