MT7865 is a high power factor step-down LED driver chip. Working in quasi resonant mode (QRM) greatly reduces the stress on current and voltage, while improving efficiency and resistance to electromagnetic interference. By utilizing Meixinsheng's unique quasi full cycle detection patent technology, the LED output current is detected to ensure the accuracy of the LED output current.

MT7865 achieves intelligent dimming by decoding PWM signals to regulate LED current. High precision and consistency of LED current are achieved through internal fine-tuning of the decoder. Especially at lower dimming levels, the PWM control method seamlessly transitions from quasi resonant mode to pulse frequency modulation mode (PFM), ensuring smaller output current and low switching losses.

In addition, MT7865 also implements various protection functions, including LED open circuit protection (OVP), cycle by cycle overcurrent protection (OCP), LED short circuit protection (SCP), and over temperature compensation, to ensure the reliable operation of the system.

main features

Built in 600V high voltage MOSFET

Single stage active power factor correction (PF>0.90)

High precision LED current (± 3%)

Excellent linearity and load adjustability (± 2%)

Quasi resonant working mode (QRM)

Multiple protection mechanisms

PWM dimming (100:1)

DIP8 packaging

For detailed information, please call 0755-36564378 18565735175