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FAN6862L Folha de dados(PDF) 1 Page - Fairchild Semiconductor

Nome de Peças FAN6862L
Descrição Electrónicos  Highly Integrated Green-Mode PWM Controller
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN6862L Folha de dados(HTML) 1 Page - Fairchild Semiconductor

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January 2010
© 2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6862R/L • Rev. 1.0.0
FAN6862R / FAN6862L
Highly Integrated Green-Mode PWM Controller
Features
Low Startup Current: 8µA
Low Operating Current in Green Mode: 3mA
Peak-Current-Mode Operation with Cycle-by-Cycle
Current Limiting
PWM Frequency Continuously Decreasing with
Burst Mode at Light Loads
VDD Over-Voltage Protection (OVP)
Constant Output Power Limit (Full AC Input Range)
Over-Temperature Protection (OTP)
Fixed PWM Frequency (65KHz) with Frequency
Hopping
Feedback Open-Loop Protection with 56ms Delay
Soft Start Time: 5ms
400mA Driving Capability
Applications
General-purpose switch-mode power supplies and
flyback power converters, including:
Power Adapters
Open-Frame SMPS
SMPS with Surge-Current Output, such as for
Printers, Scanners, and Motor Drivers
Description
A highly integrated PWM controller, FAN6862R/L
provides several features to enhance the performance
of flyback converters. To minimize standby power
consumption,
a
proprietary
green-mode
function
provides off-time modulation to continuously decrease
the switching frequency under light-load conditions.
Under zero-load conditions, the power supply enters
burst mode, which completely shuts off PWM output.
Output restarts just before the supply voltage drops
below the UVLO lower limit. This green-mode function
enables power supplies to meet international power
conservation requirements.
The FAN6862R/L is designed for SMPS and integrates
a frequency-hopping function that helps reduce EMI
emission of a power supply with minimum line filters.
The built-in synchronized slope compensation is
proprietary sawtooth compensation for constant output
power limit over universal AC input range. The gate
output is clamped at 18V to protect the external
MOSFET from over-voltage damage.
Other protection functions include VDD over-voltage
protection, over-temperature protection, and overload
protection. For over-temperature protection, an external
NTC thermistor can be applied to sense the ambient
temperature. When OVP, OTP, or OLP is activated, an
internal protection circuit switches off the controller.
Part Number
OVP
OTP
OLP
FAN6862RTY Auto Restart Auto Restart Auto Restart
FAN6862LTY
Latch
Latch
Latch
Ordering Information
Part Number
Operating Temperature Range
Eco Status
Package
Packing Method
FAN6862RTY
-40 to +105°C
Green
6-Pin SSOT-6
Tape & Reel
FAN6862LTY
-40 to +105°C
Green
6-Pin SSOT-6
Tape & Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.


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