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PDF AX6203 Data sheet ( Hoja de datos )
| Número de pieza | AX6203 | |
| Descripción | Power Supply Controller | |
| Fabricantes | AXElite | |
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AX6203
High Performance, Current Mode, Switching
Power Supply Controller
GENERAL DESCRIPTION
The AX6203 is a high performance, current mode control PWM controller, specific
designed for AC/DC transformer with high cost performance ratio. It provides continuous
output power 12W and peak output power 18W at the input voltage range 85V~265V. Its
optimized and highly reasonable circuit design has made it possible to minimize the total
cost of the product. This switching power supply controller could be applied to typical
flyback circuit topology to constitute a simple AC/DC converter.
The initial circuit of AX6203 has been designed with a unique current sink method to
startup the system by using the magnification function of the switching transistor itself. This
will significantly reduce the power consumption of the start-up resistor. While output power
becomes smaller, AX6203 will automatically lower the operating frequency to achieve very
small standby power consumption. When the switching transistor cuts off, the internal
circuit will bias it reversely, it helps to improve the resistant voltage over 700V high voltage
of OC pin. This will ensure the safety of the switching transistor.
The AX6203 provides overload and saturation prevention functions, capable of
preventing disorders such as overload, transformer saturation and output short circuit, in
order to increase the reliability of the power supply. The AX6203 also provides an accurate
reference voltage 2.5V for clock generation circuit, and the clock frequency may be set by
an external capacitor. Presently, standard PDIP-8L package and environmental friendly
lead-free package in compliance with European standard are supplied.
1/10
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.1 Aug.02, 2011
1 page  
AX6203
ELECTRICAL CHARACTERISTICS (CONTINUOUS)
Power Supply Current Section
Initiating Reception Current
1.6 2.4 3.2 mA
Initiating Static Current
- 55 80 uA
Static Current
IQ VCC=8V
2.8 3.0 3.2 mA
Start-Up Voltage
8.6 8.8 9.0 V
Oscillator Turn-Off Voltage
4.4 4.6 4.8 V
Re-Enabling Voltage
3.6 3.8 4.0 V
Over-Voltage Limit Threshold
9.5 10 10.5 V
Note 1: Stress beyond those listed under absolute maximum ratings may cause permanent damage to the
device. Exposure to any absolute maximum rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The AX6203 is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over
the -40°C to 85°C operating temperature range are assured by design, characterization and correlation
with statistical process controls.
APPLICATION CIRCUIT
C1
33uF/400V
D1-D4
1N4007*4
+
LF1
UU9.8
D5
FR107
C2
222/1KV
C5
4.7uF/16V
+
D6
IN4007
T1
EF20
D7
SR3100
D8
LED_25
L2
T6*8
+ C7
R10
+
C8
470uF/25V 4.7K,1206 470uF/25V
+12V
GND
CX1
104/275V
TZ1
F1
F1 5A/250V
LN
AX6203
R3 // R4
C3
681J/50V,0805
C4
IC3
~~PC817C
CY1
222M/400V,Y1
IC2
TL431A
5/10
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.1 Aug.02, 2011
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AX6203.PDF ] | |
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