AIC AIC1740-30CY, AIC1740-30CF, AIC1740-30CE, AIC1740-27CY, AIC1740-27CF Datasheet

µ

µ

AIC1740

AIC1740

Low Output Voltage, 500mA Low Dropout

Linear Regulator

n FEATURES

l Low Dropout Voltage of 900mV at 500mA

Output Current (3.0V Output Version).

l Guaranteed 500mA Output Current.
l Internal 1.5Ω P-MOSFET Draws no Base

Current.

l Low Ground Current at 65
l 2% Accuracy Output Voltage of 1.8V/ 2.0V/

A.

2.5V/ 2.7V/ 3.0V.

l Input Voltage Range up to 12V.
l Needs only 4.7
l Current and Thermal Limiting.

F for Stability.

n APPLICATIONS

l Voltage Regulator for CD-ROM Drivers.
l Voltage Regulator for LAN Cards.
l Voltage Regulator for Monitor Microprocessor.
l Voltage Regulator for RAM Module.
l Wireless Communication Systems.
l Battery Powered Systems.

n DESCRIPTION

The AIC1740 is a 3-pin low dropout linear
regulator. The superior characteristics of the
AIC1740 include zero base current loss, very
low dropout voltage, and 2% accuracy output
voltage. Typical ground current remains
approximately
65µA, from no load to maximum loading
conditions. Dropout voltage is exceptionally low.
Output current limiting and thermal limiting are
built in to provide maximal protection to the
AIC1740 against fault conditions.

The AIC1740 comes in the popular SOT-223,
TO-251 and TO-252 packages.

TYPICAL APPLICATION CIRCUIT

n

VOUT

++

VOUT

10µF
COUT

VIN

VIN

1µF
CIN

GND

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-1740-00 Aug 2, 00 TEL: [phone] FAX: [phone]

ORDER NUMBER

PIN CONFIGURATION

231

231

231

AIC1740

n ORDERING INFORMATION

AIC1740-XCX

PACKAGING TYPE
E: TO-252
F: TO-251
Y: SOT-223

OUTPUT VOLTAGE

18: 1.8V
20: 2.0V
25: 2.5V
27: 2.7V
30: 3.0V

AIC1740-18CE
AIC1740-20CE
AIC1740-25CE
AIC1740-27CE
AIC1740-30CE
(TO-252)

AIC1740-18CF
AIC1740-20CF
AIC1740-25CF
AIC1740-27CF
AIC1740-30CF
(TO-251)

FRONT VIEW
1: VOUT
2: GND
3: VIN

FRONT VIEW
1: VOUT
2: GND
3: VIN

AIC1740-18CY
AIC1740-20CY
AIC1740-25CY
AIC1740-27CY
AIC1740-30CY
(SOT-223)

n ABSOLUTE MAXIMUM RATINGS

Input Supply Voltage ...................................………….................................... -0.3~12V

Operating Junction Temperature Range .......……….............................. -40°C~ 85°C

Storage Temperature Range .........................………….......................... -65°C~150°C

Power Dissipation ....…………………………………..……………..……............... 0.85W

Thermal Resistance θJC TO-251, TO-252 Package ....…….…….......... 12.5°C/W

SOT-223 Package ....…………..……….............15°C/W

n TEST CIRCUIT

Refer to the TYPICAL APPLICATION CIRCUIT

FRONT VIEW
1: VOUT
2: GND
3: VIN

2

AIC1740

n ELECTRICAL CHARACTERISTICS (Ta=25°C, C

specified.)

PARAMETER TEST CONDITIONS MIN. TYP. MAX. UNIT

Output Voltage No Load

AIC1740-30
AIC1740-27
AIC1740-25
AIC1740-20

AIC1740-18
Output Voltage
Temperature
Coefficiency
Line Regulation IL=1mA, VIN=4.0~12V 3 10 mV
Load Regulation
(Note 2)
Current Limit
(Note 3)

(Note 4)

Ground Current IO=0.1mA~I

Note 1: Guaranteed by design.
Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low ON time.
Note 3: Current limit is measured by pulsing a short time.
Note 4: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV

below the value measured with a 1V differential.

(Note 1) 50

VIN=5V, IL=0.1~500mA 20 50

VIN=5V, V

AIC1740s IL=0.1mA 0.2 10 mVDropout Voltage
AIC1740-30
AIC1740-27
AIC1740-25
AIC1740-20
AIC1740-18

=0V 650

OUT

, VIN=4V~12V 65 90 µA

MAX

VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V
VIN=4.0~12V

IL=500mA 900

=1µF, C

IN

2.940

2.646

2.450

1.960

1.764

=10µF, unless otherwise

OUT

3.0

2.7

2.5

2.0

1.8

950
1000
1260
1370

3.060

2.754

2.550

2.040

1.836

1050
1100
1150
1410
1520

V

PPM/°C

mV

mA

mV

3