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代理供应 QH7939 QH7938 QH7935 QH2213 QH9032
QH7939
General Description
The QH7939 is a single-power stage, isolated and primary side offline LED lighting regulator
which achieves high power factor.
The proprietary real-current control method can control the LED current accurately from the
primary side information.
It can significantly simplify the LED lighting system design by eliminating the secondary side
feedback components and the opto-coupler.
The QH7939 integrates active power factor correction and works in Quasi Resonance mode (QRM)
in order to reduce the
power MOSFET switching losses.
代理供应 QH7939 QH7938 QH7935 QH2213 QH9032
