Rev. 10/2/00

AS2810

1A Low Dropout Voltage Regulator

Adjustable & Fixed Output,

Fast Response

FEATURES

APPLICATIONS

• Adjustable Output Down To 1.2V

• SCSI-II Active Terminator

• Fixed Output Voltages 1.5V, 2.5V, 3.0V, 3.3V, 5.0V

• Portable Palmtap/Notebook Computer

• Output Current Of 1A

• SMPS Post-Regulator

• Low Dropout Voltage 1.2V Typ.

• Disk Drives

• Extremely Tight Load And Line Regulation

• Portable Consumer Equipment

• Current & Thermal Limiting

• Portable Instrumentation

• Standard 3-Terminal Low Cost TO-220, TO-263, TO-252 & SOT-223

• Battery charger

PRODUCT DESCRIPTION

The AS2810 is a low power positive voltage regulator designed to meet 1A output current and comply with SCSI-II specifications with

fix output voltage of 2.85V. This device is an excellent choice for use in battery-powered applications and portable computers. The

AS2810 features very low quiescent current and very low dropout voltage of 1.2V at a full load and lower as output current decreases.

This product is available as adjustable or fixed 1.5V, 2.5V, 3.0V, 3.3V, and 5V output voltages.

The AS2810 is offered in a 3-pin surface mount packages SOT-223, TO-220, TO-252 & DD package. The output capacitor of 10

µF

or larger is needed for the output stability of AS2810 as required by most other regulator circuits

ORDERING INFORMATION

TO-220

3-PIN

DD PLASTIC

3-PIN

SOT-223

3-PIN

TO-252

3-PIN

OPEPERATING JUNCTION

TEMP. RANGE

AS2810YU-X

AS2810YT-X

AS2810YM3-X

AS2810YR-X

-45 to +125

°C

X= Output Voltage (1.5V, 2.5V, 3.0V, 3.3V, 5.0V and Blank for Adj.)

Y= Output Tolerance, A for 1%

Blank for 2%

Consult with factory for other fixed voltages.

PIN CONNECTIONS

Front View

TO-220-3 (U)

AS2810

1

23

ADJ/GND V

OUT

V

IN

Top View

TO-263-3 (T)

1

AS2810

2

3

ADJ/GND V

OUT

V

IN

Front View

TO-252 (R)

ADJ/GND

V

IN

V

OUT

3

2

1

AS2810

Top View

SOT-223 (M3)

ADJ/ GND V

AS2810

13

2