DESCRIPTION

The AIC1721/1721D is the enhanced CMOS version of the LP2950. The superior characteristics of the AIC1721/1721D include zero base current loss, very low dropout voltage, and 1 accuracy output voltage. Typica-l ground current remains approximately 55µA, from no load to maximum loading conditions. Dropout voltage at 100mA output current is significantly lower than its bipolar counterpart: 130mV for the AIC1721-5/1721D-5, and 180mV for the AIC1721/ 1721D. Output current limiting and thermal limiting are built in to provide maximal protection to the AIC1721/ 1721D against fault conditions.

FEATURES

• Low Dropout Voltage of 130mV at 100mA Output Current (5V Output Version).

• Guaranteed 150mA/300mA Output Current.

• Internal 1.3Ω P-MOSFET Draws no Base Current.

• Low Ground Current at 55µA.

• 1 Accuracy Output Voltage of 3.3V/5V.

• Input Voltage Range up to 12V (5V Output Version).

• Extremely Tight Load and Line Regulation.

• Fast Transient Response.

• Needs only 1µF for Stability.

• Current and Thermal Limiting.

APPLICATIONS

• Voltage Regulator for LAN Cards.

• Wireless Communication Systems.

• Battery Powered Systems.