AIC AIC1734 User Manual

AIC1734

300mA Low Dropout Linear Regulator

 FEATURES

 Low Dropout Voltage of 470mV at 300mA Out-

put Current (3.0V Output Version).

 Guaranteed 300mA Output Current.

 Low Ground Current at 55µA.

 2% Accuracy Output Voltage of 1.8V/ 2.0V

/2.5V /2.7V/ 3.0V/ 3.3V/ 3.5V/ 3.7V/ 3.8V/ 5.0V/

5.2V.

 Only needs 1µF Output Capacitor for Stability.

 Current and Thermal Limiting.

 APPLICATIONS

 CD-ROM Drivers.

 LAN Cards.

 Microprocessor.

 DESCRIPTION

The AIC1734 is a 3-pin low dropout linear

regulator. The superior characteristics of the

AIC1734 include zero base current loss, very

low dropout voltage, and 2% accuracy output

voltage. Typical ground current remains ap-

proximately 55 µ A, for loading ranging from

zero to maximum. Dropout voltage at 300mA

output current is exceptionally low. Built-in

output current limiting and thermal limiting

provide maximal protection to the AIC1734

against fault conditions.

The AIC1734 is available in popular SOT-23,

SOT-89 and TO-92 packages.

 RAM Module.

 Wireless Communication Systems.
 Battery Powered Systems.

TYPICAL APPLICATION CIRCUIT



VIN

VIN

+

1µF
C

Low Dropout Linear Regulator

VOUT

AIC1734

GND

IN

V

OUT

+

1µF
C

OUT

Analog Integrations Corporation Si-Soft Research Center DS-1734P-04 010405

3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.

TEL: [phone] FAX: [phone] www.analog.com.tw

1

A

 ORDERING INFORMATION

IC1734-XXXXX XX

PACKING TYPE
TR: TAPE & REEL
BG: BAG

PACKAGE TYPE
U: SOT-23
XA: SOT-89
XT: SOT-89
ZT: TO-92
ZL: TO-92

C: Commercial
P: Lead Free Commercial

OUTPUT VOLTAGE
18: 1.8V
20: 2.0V
25: 2.5V
27: 2.7V
30: 3.0V
33: 3.3V
35: 3.5V
37: 3.7V
38: 3.8V
50: 5.0V
52: 5.2V

PIN CONFIGURATION

SOT-23 (CU & PU)
TOP VIEW
1: GND
2: VOUT
3: VIN

SOT-89 (CXA & PXA)
TOP VIEW
1: GND

2. VIN

3. VOUT

SOT-89 (CXT & PXT)
TOP VIEW
1: VOUT

2. GND

3. VIN

TO-92 (CZT & PZT)
TOP VIEW
1: GND

2. VIN

3. VOUT

AIC1734

3

1

1

1

1

2

3

2

2

3

2

3

Example: AIC1734-18CXATR

1.8V Version, in SOT-89 Package &



Tape & Reel Packing Type

AIC1734-18PXATR

1.8V Version, in SOT-89 Lead Free



Package & Tape & Reel Packing Type

TO-92 (CZL & PZL)
TOP VIEW
1: VIN

2. GND

3. VOUT

 SOT-23 MARKING

Part No. CU PU Part No. CU PU

AIC1734-18XU CD18 CD18P AIC1734-35XU CD35 CD35P

AIC1734-20XU CD20 CD20P AIC1734-37XU CD37 CD37P

AIC1734-25XU CD25 CD25P AIC1734-38XU CD38 CD38P

AIC1734-27XU CD27 CD27P AIC1734-50XU CD50 CD50P

AIC1734-30XU CD30 CD30P AIC1734-52XU CD52 CD52P

AIC1734-33XU CD33 CD33P

1

2

3

2

 SOT-89 MARKING

Part No. CXA PXA Part No. CXT PXT

AIC1734-18XXA CA18 CA18P AIC1734-18XXT CB18 CB18P

AIC1734-20XXA CA20 CA20P AIC1734-20XXT CB20 CB20P

AIC1734-25XXA CA25 CA25P AIC1734-25XXT CB25 CB25P

AIC1734-27XXA CA27 CA27P AIC1734-27XXT CB27 CB27P

AIC1734-30XXA CA30 CA30P AIC1734-30XXT CB30 CB30P

AIC1734-33XXA CA33 CA33P AIC1734-33XXT CB33 CB33P

AIC1734-35XXA CA35 CA35P AIC1734-35XXT CB35 CB35P

AIC1734-37XXA CA37 CA37P AIC1734-37XXT CB37 CB37P

AIC1734-38XXA CA38 CA38P AIC1734-38XXT CB38 CB38P

AIC1734-50XXA CA50 CA50P AIC1734-50XXT CB50 CB50P

AIC1734-52XXA CA52 CA52P AIC1734-52XXT CB52 CB52P

AIC1734

 ABSOLUTE MAXIMUM RATINGS

Input Supply Voltage -0.3 ~12V

Operating Temperature Range

Storage Temperature Range

Maximum Junction Temperature

Lead Temperature (Soldering) 10 sec. 260°C

Thermal Resistance Junction to Ambient SOT-89 Package

(Assume no Ambient Airflow, no Heatsink) TO-92 Package

SOT-23 Package

Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.

-40°C~ 85°C

-65°C~150°C

125°C

160°C/W

150°C/W

180°C/W

 TEST CIRCUIT

Refer to the TYPICAL APPLICATION CIRCUIT

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