AK7353

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AK7353, a high-performance, low-noise, high-efficiency constant current chipset, is manufactured by AKM. This device consists of an internal charge-pump DCDC and external NchMOS FET. It is intended to be used in systems such as LEDs, LCDs, PDPs and PMOLEDs. This device operates on an input voltage of 12V or 24V and provides a regulated current range of 0.1 ~ 3A.

The architecture of AK7353 consists of a voltage reference and ground, an internal 10mV reference voltage, a 20KΩ sensing resistor, and the external NchMOS FET. The internal charging pump boosts the output voltage so that the NchMOS FET is not over-stressed, thus allowing for high efficiency and low EMI noise. The voltage reference is applied to the sensing resistor, allowing for a linear relationship between the sensing voltage and the output current. The AK7353 also includes an over voltage, under voltage, and over temperature protection. The maximum output current, operating range, and input voltage requirements can be adjusted through the simple interface selection.

The AK7353 is suitable for LED light fixtures, LED displays and LED lighting systems that require high efficiency and low noise. Its efficiency ratings range from 95% to 97%, making it one of the most efficient LED constant current drivers on the market. It also provides high noise immunity, thus reducing the susceptibility of failure due to noise interference. With its integrated dimming function and an internal voltage feedback circuit, the device is able to provide accurate current and voltage control.

In summary, The AK7353 provides a cost-effective, highly efficient and integrated solution for LED lighting applications. It provides up to 97% efficiency, low noise, and a wide operating range, allowing for optimized control of various LEDs. The ability to adjust the maximum output current, operating range, and input voltage requirements through simple interface selection makes it especially useful for high-power LED lighting applications.

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