Highly Integrated Green-Mode PWM Controller ( 16 Page)
© 2009 Fairchild Semiconductor Corporation
FAN6862R/L • Rev. 1.0.0
FAN6862R / FAN6862L
Highly Integrated Green-Mode PWM Controller
Low Startup Current: 8µA
Low Operating Current in Green Mode: 3mA
Peak-Current-Mode Operation with Cycle-by-Cycle
PWM Frequency Continuously Decreasing with
Burst Mode at Light Loads
Over-Voltage Protection (OVP)
Constant Output Power Limit (Full AC Input Range)
Over-Temperature Protection (OTP)
Fixed PWM Frequency (65KHz) with Frequency
Feedback Open-Loop Protection with 56ms Delay
Soft Start Time: 5ms
400mA Driving Capability
General-purpose switch-mode power supplies and
flyback power converters, including:
SMPS with Surge-Current Output, such as for
Printers, Scanners, and Motor Drivers
A highly integrated PWM controller, FAN6862R/L
provides several features to enhance the performance
of flyback converters. To minimize standby power
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
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 V
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.
FAN6862RTY Auto Restart Auto Restart Auto Restart
Operating Temperature Range
-40 to +105°C
Tape & Reel
-40 to +105°C
Tape & Reel
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