AIC1721/1721D

Features:

 Low Dropout Voltage of 130mV at 100mA OutputCurrent (5V Output Version).
Guaranteed 150mA/300mA Output Current.
Internal 1.3 P-MOSFET Draws no Base Current.
Low Ground Current at 55A.
1% Accuracy Output Voltage of 3.3V/5V.
Input Voltage Range up to 12V (5V OutputVersion).
Extremely Tight Load and Line Regulation.
Fast Transient Response.
Needs only 1F for Stability.
Current and Thermal Limiting.


Application

 Voltage Regulator for LAN Cards.
  Wireless Communication Systems.
  Battery Powered Systems.



Pinout




Specifications

Input Supply Voltage ........................ ..........................-0.3~12V
Operating Junction Temperature Range ............. -40°C~ 125°C
Storage Temperature Range ............................... -65°C~150°C
Power Dissipation SOT-89 Package ................................ 0. 80W
TO-92 Package ............................................................ ... 0.78W


Description

The AIC1721/1721D is the enhanced CMOSversion of the LP2950. The superiorcharacteristics of the AIC1721/1721D includezero base current loss, very low dropout voltage,and 1% accuracy output voltage. Typica-l groundcurrent remains approximately 55A, from noload to maximum loading conditions. Dropoutvoltage at 100mA output current is significantlylower than its bipolar counterpart: 130mV for theAIC1721-5/1721D-5, and 180mV for theAIC1721/ 1721D. Output current limiting andthermal limiting are built in to provide maximalprotection to the AIC1721/ 1721D against faultconditions.While pin-to-pin