AIC2951

Features:

Low Dropout Voltage of 130mV at 100mA Output Current (AIC2951/2951D-50).
Guaranteed 150mA /300mA Output Current.
Internal 1.3  P-MOSFET Draws no Base Current.
Low Ground Current at 55 mA.
1% Accuracy Output of 3V/3.3V/5V.
Error Flag Warns of Output Dropout.
1mA Supply Current in Shutdown Mode.
Output Programmable from 1.235V~11V.
Fast Transient Response.
Needs only 1mF for Stability.

 

Application

Voltage Regulator for Pentium^® CPUs.
Wireless Communication System.
Battery Powered Systems.


Specifications

Input Supply Voltage........................................................................... -0.3~12V
Feedback Input Voltage...................................................................... -0.3~12V
Shutdown Input Voltage..................................................................... -0.3~12V
Error Comparator Output.................................................................... -0.3~12V
Operating Junction Temperature Range ....................................... -40~125
Storage Temperature Range .........................................................-65~150


Description

  The AIC2951/ 2951D series is the enhanced CMOS version of the LP2951. The superior char-acteristics of the AIC2951/ 2951D series include
zero base current loss, very low dropout voltage,and 1% accuracy output voltage. Typical ground current remains approximately 55mA, from no
load to maximum loading conditions. Dropout voltage at 100mA output current is significantly lower than its bipolar counterpart: 130mV for the AIC2951-50/2951D-50, 180mV for the AIC2951-33/ 2951D-33, and 200mV for the AIC2951-30/2951D-30. Output current limiting and thermal limiting are built in to provide maximal protection to the AIC2951/2951D series from fault condi-tions.
  An error flag output, indicating when output volt-age drops out of regulation, often due to the falling batteries on the input, can be used for a power-on reset. A logic-controlled shutdown input enables the regulator to be switched on and off. The part of AIC2951/ 2951D series may be configured for a fixed output voltage or programmed from 1.235V to 11V with an external pair of resistors. The part comes in 8-pin DIP or SO packages.