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FAN6755WMY Folha de dados(PDF) 1 Page - Fairchild Semiconductor

Nome de Peças FAN6755WMY
Descrição Electrónicos  mWSaver??PWM Controller
Download  17 Pages
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN6755WMY Folha de dados(HTML) 1 Page - Fairchild Semiconductor

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May 2013
© 2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6755W / FAN6755UW
• Rev. 1.0.7
FAN6755W / FAN6755UW
mWSaver
PWM Controller
Features
mWSaverTechnology Provides Industry’s Best-
in-Class Standby Power
-
<100 mW at 25-mW Load for LCDM Adaptor
-
Internal High-Voltage JFET Startup
-
Low Operating Current: Under 2 mA
-
Adaptively Decrease PWM Frequency to
23 kHz at Light-Load Condition for Better
Efficiency
-
Feedback Impedance Switching During
Minimum Load or No Load
Proprietary Asynchronous Frequency Hopping
Technique that Reduces EMI
Fixed PWM Frequency: 65 kHz (FAN6755W),
130 kHz (FAN6755UW)
Internal Leading-Edge Blanking
Built-in Synchronized Slope Compensation
Auto-Restart Protection: Feedback Open-Loop
Protection (OLP), VDD Over-Voltage Protection
(OVP), Over-Temperature Protection (OTP), and
Line Over-Voltage Protection
Soft Gate Drive with Clamped Output Voltage: 18 V
V
DD Under-Voltage Lockout (UVLO)
Programmable Constant Power Limit
(Full AC Input Range)
Internal OTP Sensor with Hysteresis
Build-in 5-ms Soft-Start Function
Input Voltage Sensing (V
IN Pin) for Brown-In/Out
Protection with Hysteresis and Line Over-Voltage
Protection
Applications
General-purpose switched-mode power supplies and
flyback power converters, including:
LCD Monitor Power Supply
Open-Frame SMPS
Description
This highly integrated PWM controller provides several
features
to
enhance
the
performance
of
flyback
converters.
To minimize standby power consumption, a proprietary
adaptive
green-mode
function
reduces
switching
frequency at light-load condition. To avoid acoustic-
noise problems, the minimum PWM frequency is set
above 23 kHz. This green-mode function enables the
power supply to meet international power conservation
requirements, such as Energy Star
®. With the internal
high-voltage startup circuitry, the power loss caused by
bleeding resistors is also eliminated. To further reduce
power consumption, FAN6755W/UW uses the BiCMOS
process, which allows an operating current of only
2 mA. The standby power consumption can be under
100 mW for most of LCD monitor power supply designs.
FAN6755W/UW
integrates
a
frequency-hopping
function that reduces EMI emission of a power supply
with minimum line filters. The built-in synchronized
slope compensation achieves a stable peak-current-
mode control and improves noise immunity. The
proprietary line compensation ensures constant output
power limit over a wide AC input voltage range from
90 VAC to 264 VAC.
FAN6755W/UW provides many protection functions.
The internal feedback open-loop protection circuit
protects the power supply from open-feedback-loop
condition or output-short condition. It also has line
under-voltage protection (brownout protection) and
over-voltage protection using an input voltage sensing
pin (VIN).
FAN6755W/UW is available in a 7-pin SOP package.
ENERGY STAR® is a registered trademark of the U.S. Department of Energy and the U.S. Environmental Protection Agency.


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