ACT8309/8310/8311

Rev PrA, 24-Jan-08

Active-Semi

- 2 -

www.active-semi.com

Copyright © 2008 Active-Semi, Inc.

ORDERING INFORMATION

PART

NUMBER

OUTPUT

CURRENT

PACKAGE

PINS

TEMPERATURE

RANGE

ACT8309NHADJ-T

TDFN33-8

8

-40°C to +85°C

ACT8309NHxyz-T

0.9A

TDFN33-8

8

-40°C to +85°C

ACT8310NHADJ-T

1.2A

TDFN33-8

8

-40°C to +85°C

0.9A

OUTPUT

VOLTAGE

Adjustable

1.2V, 1.5V, 1.8V,

2.5V, 3.0V, 3.3V

Adjustable

ACT8310NHxyz-T

1.2A

1.2V, 1.5V, 1.8V,

2.5V, 3.0V, 3.3V

TDFN33-8

8

-40°C to +85°C

ACT8311NHADJ-T

1.5A

Adjustable

TDFN33-8

8

-40°C to +85°C

ACT8311NHxyz-T

1.5A

1.2V, 1.5V, 1.8V,

2.5V, 3.0V, 3.3V

TDFN33-8

8

-40°C to +85°C

PIN CONFIGURATION

PIN DESCRIPTIONS

TDFN33-8

PIN

NAME

DESCRIPTION

1, 3

IN

Power Input. Bypass to GP close to IC with a high quality ceramic capacitor.

2

GP

Power Ground. Connect to G with a short trace.

4

G

Analog Ground. Connect to GP with a short trace.

5

FB

Feedback Node. For fixed output voltage versions, connect this pin directly to the output. For

the adjustable output versions the voltage at this pin is regulated to 0.8V, connect to this pin

to the center of the output feedback resistor divider for voltage setting.

6

POK

Open-Drain Power-OK Status Output. POK is an open-drain output which sinks current when

the output voltage is less than 95% of the normal value. When the IC is disabled, POK is high

impedance.

7

EN

Enable Input. When higher than 1.4V, this pin turns the IC on. When lower than 0.4V, this pin

turn the IC off.

8

SW

Switch Output. Connect this pin to the switching end of the inductor.

ACT8309

ACT8310

ACT8311

1

2

3

4

8

7

6

5

IN

GP

G

IN

SW

POK

FB

EN

: Fixed output voltage options are available for production subject to minimum order quantities. Contact Active-Semi for more informa-

tion regarding fixed output voltage options.