FAN73402MX Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The FAN73402MX is a fixed frequency, pulse-code modulation (PWM) current mode controller with an embedded, low phase current mode oscillator, designed to drive N-channel enhancement mode power MOSFETs for various LED lighting applications. It features a wide input voltage range of 2.5V to 38V at a wide output voltage range of 0V to 24V. The FAN73402MX is well suited for applications where long lifetime, low EMI, and wide input voltage range are important, like that used in smart home products, industrial lighting, and automotive lighting applications.

To make operation easier, the FAN73402MX includes a power good signal and thermal shutdown protection. It can drive up to 16 LEDs in series with up to 30V output voltage in series, and up to 8 LEDs in parallel with up to 20V output voltage in parallel. The on-duty cycle (duty cycle + off-duty cycle) is automatically managed by an internal PWM driver to maintain a constant LED current in all conditions. This ensures correct LED brightness over a wide range of input and output voltage fluctuations.

Additionally, the FAN73402MX can be used in applications with analogue dimming or external dimming control when used in conjunction with the analog dimming pin, which allows for the user to adjust the brightness of the LED. The FAN73402MX also supports a power save function, which reduces the load power consumption when the LED lighting is in low power mode. This improves the overall efficiency of the LED lighting system.

The FAN73402MX is suitable for applications where high efficiency, wide input voltage range and free dimming control is needed. The uses for this driver range from versatile lighting systems such as commercial lighting, automotive lighting, and industrial lighting applications to smart home products such as smart lights, smart switches, and other smart home products. It is also suitable for applications requiring long lifetime, low EMI, and wide input voltage range such as industrial lighting, automotive lighting, and smart home products.

The working principle of the FAN73402MX is based on a fixed frequency PWM current mode controller with an embedded low phase current mode oscillator. The oscillator generates a rectangular waveform, which is input to the gate of a MOSFET that is continuously and actively driving the output. During operation, the maximum output current is defined by the loop resistance and a small current mirror, and is monitored by an internally generated feedback signal that is proportional to the output current and the output voltage. The controller will turn off the MOSFET when the feedback signal reaches the maximum output current, and then slowly turn it on again to prevent over-current surges and ensure maximum efficiency of the driver.

The FAN73402MX also includes several protection functions such as an Under Voltage Lockout (UVLO) to protect the device from over-stressing, Under Voltage faults, over-current and short circuit protection, and thermal protection. It can detect up to 1.5V drop across its output to indicate an open LED circuit and remove power to the output. The protection circuitry of the FAN73402MX keeps the device and connected LEDs safe from damage, while ensuring long lifetime and reliability of the device.

In conclusion, the FAN73402MX is a highly efficient, fixed-frequency PWM current mode LED driver specifically designed for smart home products, industrial lighting, and automotive lighting applications. It features a wide input voltage range, long lifetime, low EMI and wide output current range and can be used with an external dimming control to adjust LED brightness. Additionally, the FAN73402MX includes protection functions such as Voltage Lockout (UVLO), over-current protection, short circuit protection and thermal protection, making it one of the most reliable LED drivers on the market.

The specific data is subject to PDF, and the above content is for reference