Active-Semi
ORDERING INFORMATION
PART
NUMBER
ACT8309NHADJ-T
ACT8309NHxyz-T
ACT8310NHADJ-T
ACT8310NHxyz-T
ACT8311NHADJ-T
ACT8311NHxyz-T
ACT8309/8310/8311
OUTPUT
CURRENT
0.9A
0.9A
1.2A
1.2A
1.5A
1.5A
Rev 0, 15-Jun-10
OUTPUT
VOLTAGE
Adjustable
1.2V, 1.5V, 1.8V,
2.5V, 3.0V, 3.3V
Adjustable
1.2V, 1.5V, 1.8V,
2.5V, 3.0V, 3.3V
Adjustable
1.2V, 1.5V, 1.8V,
2.5V, 3.0V, 3.3V
PACKAGE
TDFN33-8
TDFN33-8
TDFN33-8
TDFN33-8
TDFN33-8
TDFN33-8
PINS
8
8
8
8
8
8
TEMPERATURE
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
: 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.
PIN CONFIGURATION
IN
GP
IN
G
1
2
3
4
8
SW
EN
POK
FB
ACT8309
ACT8310
ACT8311
7
6
5
TDFN33-8
PIN DESCRIPTIONS
PIN
1, 3
2
4
5
NAME
IN
GP
G
FB
DESCRIPTION
Power Input. Bypass to GP close to IC with a high quality ceramic capacitor.
Power Ground. Connect to G with a short trace.
Analog Ground. Connect to GP with a short trace.
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.
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.
Enable Input. When higher than 1.4V, this pin turns the IC on. When lower than 0.4V, this pin
turn the IC off.
Switch Output. Connect this pin to the switching end of the inductor.
-2-
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Copyright © 2010 Active-Semi, Inc.
6
7
8
POK
EN
SW
Innovative Power
TM
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
