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AIC1721

Analog Intergrations Corporation
Part Number AIC1721
Manufacturer Analog Intergrations Corporation
Description 3-pin Low Dropout Linear Regulator
Published Mar 23, 2005
Detailed Description AIC1721/1721D 3-pin Low Dropout Linear Regulator FEATURES Low Dropout Voltage of 130mV at 100mA Output Current (5V Outp...
Datasheet PDF File AIC1721 PDF File

AIC1721
AIC1721

Overview
AIC1721/1721D 3-pin Low Dropout Linear Regulator 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.
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.
While pin-to-pin compatible with the LP2950 and the industry industry standard 78XX series of voltage regulators, the AIC1721/1721D comes in the popular3-pin SOT-89 or TO-92 packages.
APPLICATIONS Voltage Regulator for LAN Cards.
Wireless Communication Systems.
Battery Powered Systems.
TYPICAL APPLICATION CIRCUIT VIN VIN AIC1721/ AIC1721D VOUT VOUT GND + 1µ F CIN + 10µF COUT Negative Voltage Regulator Analog Integrations Corporation DS-1721-01 4F, 9, Industry E.
9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC TEL: 886-3-5772500 FAX: 886-3-5772510 www.
analog.
com.
tw 1 AIC1721 ORDERING INFORMATION AIC1721X-XXX PACKAGING TYPE X: SOT-89 Z: TO-92 TEMPERATURE RANGE C: 0°C~+70°C OUTPUT VOLTAGE DEFAULT: 3.
3V 5: 5.
0V ORDER NUMBER AIC1721CX AIC1721-5CX AIC1721DCX AIC1721D-5CX (SOT-89) PIN CONFIGURATION FRONT VIEW 1: VOUT 2: GND 3: VIN 1 2 3 OUTPUT CURRENT DEFAULT: 150mA D: 300mA AIC1721CZ AIC1721-5CZ...


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