ACT330
Active-Semi
High Performance ActivePSRTM Primary Switching Regulator
and US Energy Star standards) while using very
few external components.
FEATURES
Ultra Low Standby Power < 30mW
The ACT330 ensures safe operation with complete
protection against all fault conditions. Built-in
protection circuitry is provided for output shortcircuit, output over-voltage, line under-voltage, and
over temperature conditions.
Meet 5-Star Energy Saving Requirement
Patented Primary Side Regulation
Technology
No Opto-Coupler
The ACT330 ActivePSRTM is optimized for high
performance, cost-sensitive applications, and
utilizes Active-Semi’s proprietary primary-side
feedback architecture to provide accurate constant
voltage, constant current (CV/CC) regulation
without the need of an opto-coupler or reference
device. Integrated line and primary inductance
compensation circuitry provides accurate constant
current operation despite wide variations in line
voltage and primary inductance. Integrated output
cord resistance compensation further enhances
output accuracy. The ACT330 achieves excellent
regulation and transient response, yet requires less
than 30mW of standby power.
Best-in-Class Constant Voltage, Constant
Current Accuracy
Low EMI
Proprietary Fast Startup Circuit
Built-in Soft-Start Circuit
Integrated Line and Primary Inductance
Compensation
Integrated Programmable Output Cord
Resistance Compensation
Line Under-Voltage, Output Over-Voltage,
Output Short-Circuit and Over-Temperature
Protection
The ACT330 is optimized for 2W to 7W
applications. It is available in space-saving 6 pin
SOT23-6 package.
Complies with all Global Energy Efficiency
and CEC Average Efficiency Standards
Figure 1:
Simplified Application Circuit
Adjustable power from 2W to 7W
Minimum External Components
Tiny SOT23-6 Package
INPUT
OUTPUT
APPLICATIONS
Chargers for Cell Phones, PDAs, MP3,
Portable Media Players, DSCs, and Other
Portable Devices and Appliances
RCC Adapter Replacements
VDD
Linear Adapter Replacements
BD
ACT330
Standby and Auxiliary Supplies
SW
CS
GENERAL DESCRIPTION
FB
G
The ACT330 belongs to the high performance
patented ActivePSRTM Family of Universal-input
AC/DC off-line controllers for battery charger and
adapter applications. It is designed for flyback
topology working in discontinuous conduction mode
(DCM). The ACT330 meets all of the global energy
efficiency regulations (CEC, European Blue Angel,
Innovative PowerTM
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ActivePSRTM is a trademark of Active-Semi.
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Copyright © 2009 Active-Semi, Inc.
ACT330
ORDERING INFORMATION
PART NUMBER
TEMPERATURE RANGE
PACKAGE
PINS
PACKING
METHOD
TOP MARK
ACT330US-T
-40°C to 85°C
SOT23-6
6
TAPE & REEL
FSTT
PIN CONFIGURATION
1
G
2
BD
3
FSTT
SW
6
CS
5
FB
4
VDD
SOT23-6
ACT330US-T
PIN DESCRIPTIONS
PIN
NAME
DESCRIPTION
1
SW
2
G
3
BD
4
VDD
5
FB
Feedback Pin. Connect this pin to a resistor divider network from the auxiliary winding.
6
CS
Current Sense Pin. Connect an external resistor (RCS) between this pin and ground to set peak
current limit for the primary switch. The peak current limit is set by (0.396V × 0.9) / RCS. For more
detailed information, see Application Information.
Switch Drive. Switch node for the external NPN transistor. Connect this pin to the external power
NPN’s emitter. This pin also supplies current to VDD during startup.
Ground.
Base Drive. Base driver for the external NPN transistor.
Power Supply. This pin provides bias power for the IC during startup and steady state operation.
Innovative PowerTM
-2-
Active-Semi Confidential¯Do Not Copy or Distribute
ActivePSRTM is a trademark of Active-Semi.
Downloaded from DatasheetLib.com - datasheet search engine
www.active-semi.com
Copyright © 2009 Active-Semi, Inc.
ACT330
Figure 6:
Universal VAC Input, 5V/0.7A Output Charger
L1
FR1
L
T1
R1
D4
D1
VO
R2
D3
D2
+
C1
+
C2
D7
R10 D5
R11
C7
+
Q1
N
GND
R4
R8
BD
R5
SW
U1
VDD
ACT330
FB
CS
G
C3
R7
R9
Table 1:
ACT330 Bill of Materials
ITEM
REFERENCE
DESCRIPTION
QTY
MANUFACTURER
IC, ACT330US-T, SOT23-6
1
Active-Semi
Capacitor, Electrolytic, 4.7µF/400V, 8 × 12mm
2
KSC
POE
1
U1
2
C1, C2
3
C3
Capacitor, Ceramic, 4.7µF/35V, 1206, SMD
1
4
C7
Capacitor, Electrolytic, 470µF/10V, 8 × 12mm
1
KSC
5
D1-D4
Diode, Rectifier, 1000V/1A, 1N4007, DO-41
4
Good-Ark
6
D5
Diode, Ultra Fast, FR107, 1000V/1.0A, DO-41
1
Good-Ark
7
D7
Diode, Schottky, 40V/2A, SB240, DO-15
1
Good-Ark
8
L1
Axial Inductor, 1.5mH, 0410, DIP
1
Amode Tech
9
Q1
Transistor, NPN, 900V, 1.5A, KSB13003HR, TO-92
1
Semi How
10
FR1
Fusible Resistor, 1W, 10Ω, 5%
1
TY-OHM
11
R1, R2
Chip Resistor, 15MΩ, 1206, 5%
2
TY-OHM
12
R4
Chip Resistor, 162k, 0805, 5%
1
TY-OHM
13
R5
Chip Resistor, 22Ω, 0603, 5%
1
TY-OHM
14
R7
Chip Resistor, 1.07Ω, 1206, 1%
1
TY-OHM
15
R8
Chip Resistor, 57.6k, 0805, 1%
1
TY-OHM
16
R9
Chip Resistor, 9.53k, 0805, 1%
1
TY-OHM
17
R10
Chip Resistor, 22Ω, 0805, 5%
1
TY-OHM
18
R11
Chip Resistor, 6.2k, 0805, 5%
1
TY-OHM
19
T1
Transformer, LP = 2.35mH ± 7%, EE16
1
Innovative PowerTM
-3-
Active-Semi Confidential¯Do Not Copy or Distribute
ActivePSRTM is a trademark of Active-Semi.
Downloaded from DatasheetLib.com - datasheet search engine
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Copyright © 2009 Active-Semi, Inc.
ACT330
PACKAGE OUTLINE
SOT23-6 PACKAGE OUTLINE AND DIMENSIONS
D
è
b
0.2
SYMBOL
e
A
A1
A2
e1
DIMENSION IN
INCHES
MIN
MAX
MIN
MAX
A
1.050
1.250
0.041
0.049
A1
0.000
0.100
0.000
0.004
A2
1.050
1.150
0.041
0.045
b
0.300
0.500
0.012
0.020
c
0.100
0.200
0.004
0.008
D
2.820
3.020
0.111
0.119
E
1.500
1.700
0.059
0.067
E1
2.650
2.950
0.104
0.116
L
E
E1
c
DIMENSION IN
MILLIMETERS
e
e1
L
0.950 TYP
1.800
2.000
0.700 REF
0.037 TYP
0.071
0.079
0.028 REF
L1
0.300
0.600
0.012
0.024
è
0°
8°
0°
8°
Active-Semi, Inc. reserves the right to modify the circuitry or specifications without notice. Users should evaluate each
product to make sure that it is suitable for their applications. Active-Semi products are not intended or authorized for use
as critical components in life-support devices or systems. Active-Semi, Inc. does not assume any liability arising out of
the use of any product or circuit described in this datasheet, nor does it convey any patent license.
Active-Semi and its logo are trademarks of Active-Semi, Inc. For more information on this and other products, contact
sales@active-semi.com or visit http://www.active-semi.com. For other inquiries, please send to:
2728 Orchard Parkway, San Jose, CA 95134-2012, USA
Innovative PowerTM
-4-
Active-Semi Confidential¯Do Not Copy or Distribute
ActivePSRTM is a trademark of Active-Semi.
Downloaded from DatasheetLib.com - datasheet search engine
www.active-semi.com
Copyright © 2009 Active-Semi, Inc.