L2269 is highly integrated current mode
PWM control IC optimized for high
performance, low standby power and cost
effective offline flyblack converter applications
in sub 80W range.
PWM switching frequency at normal
operation is externally programmable to tight
range. At no load or light load condition, the IC
operates in extended ‘burst mode’ to minimize
switching loss.Lower standby power and higher
conversion efficiency in thus achieved.
VDD low startup current and low
operating current contribute to a reliable power
on startup design with L2269.A large value
resistor could thus be used in the startup circuit
to minimize the standby power.
L2269 offers complete protection coverage
with automatic self- recovery feature including
Cycle-by-Cycle current limiting (OCP),
over temperature protection(OTP),VDD over
voltage clamp and under voltage lockout (UV
LO).The Gate output is clamped to maximum
18V to protect the power MOSFET.