AIC AIC1721D-CZ, AIC1721D-CX, AIC1721D-5CZ, AIC1721D, AIC1721-CZ Datasheet

AIC1721/1721D

3-pin Low Dropout Linear Regulator

Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC www.analog.com.tw

DS-1721-01 TEL: [phone] FAX: [phone]

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 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.

 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.

 TYPICAL APPLICATION CIRCUIT

+

+

AIC1721

/

AIC1721D

10µF
C

OUT

V

OUT

VOUT

GND

VIN

1

µ

F

C

IN

V

IN

Negative Voltage Regulator

AIC1721

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 ORDERING INFORMATION

ORDER NUMBER

AIC1721CX
AIC1721-5CX
AIC1721DCX
AIC1721D-5CX
(SOT-89)

AIC1721CZ
AIC1721-5CZ
AIC1721DCZ
AIC1721D-5CZ
(TO-92)

PIN CONFIGURATION

FRONT VIEW
1: VOUT
2: GND
3: VIN

AIC1721X-XXX

1

2

3

123

PACKAGING TYPE
X: SOT-89
Z: TO-92

TEMPERATURE RANGE
C: 0°C~+70°C

OUTPUT VOLTAGE

DEFAULT: 3.3V

5: 5.0V

OUTPUT CURRENT
DEFAULT: 150mA

D: 300mA

TOP VIEW
1: VOUT
2: GND
3: VIN

 ABSOLUTE MAXIMUM RATINGS

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

 TEST CIRCUIT

Refer to the TYPICAL APPLICATION CIRCUIT