AAT4280

Features:

* 1.8V to 5.5V Input voltage range
* Very Low R _DS(NO), typically 80m (5V) 
* Slew rate limited turn-on time options
  * 1ms
  * 0.5s
  * 100s
* Fast shutdown load discharge option
* Low quiescent current
  * 2.5A typ
  * 1A max in shutdown
* TTL/CMOS input logic level
* Temperature range -40°Cto 85°C
* 4kV ESD rating
* 6 pin SOT23 or SC70JW-8 package

 


Application

* Cellular telephones
* Digital still cameras
* Personal digital assistants (PDA)
* Hot swap supplies
* Notebook computers
* Personal communication devices


Pinout




Specifications




Description

The AAT4280 SmartSwitch^TMis a member of AATI's Application Specific Power MOSFET^TM (ASPM^TM) product family.  The AAT4280 is a P-channel MOS-FET power  switch  designed  for  high-side  load-switching  applications.  The  P-channel  MOSFET device  has  a  typical  R_DS(ON) of  80m ,    allowing increased load switch power handling capacity.  This device is available in three different versions with flexible turn on and off characteristics from very fast to slew rate limited.  The standard AAT4280 (-1) ver-sion has a slew rate limited turn on load switch and is functionally compatible with the AAT4250 device while offering superior R_DS(ON)characteristics.  The AAT4280 (-2) version features fast load switch turn on capabilities, typically less than 210ns turn on and 3s turn off times.  The AAT4280 (-3) variation offers a shutdown load discharge circuit to rapidly turn off a  load  circuit  when  the  switch  is  disabled.    All AAT4280 load switch versions operate with an input voltage ranging from 1.8V to 5.5V, making them ideal for both 3V and 5V systems. The AAT4280 also features an under voltage lock out which turns the switch off when an input under-voltage condition exists.  Input logic levels are TTL and 2.5 volt to 5 volt CMOS compatible.  The quiescent supply cur-rent is very low, typically 2.5A. In shutdown mode,the supply current decreases to less than 1A.
The AAT4280 is available in a 6 pin SOT23 or 8 pin SC70JW package and is specified over -40°Cto 85°C temperature range.