MAX16835ATE+

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

MAX16835ATE+ is a device among many PMIC (Power Management IC) LED drivers. It is a product of Maxim Integrated and it was released in July 2014. It can address wide range of LED module applications, including automotive and industrial, and provides a reliable and efficient LED drive solution. The device combines a buck-type LED driver, a current-mode LED driver, and a single LED string current sense in a single chip. It also features a single coil for forward and reverse buck-mode operation, pWM control, and the ability to drive a single LED string from 6 to 30 volts.

Application Field

The MAX16835ATE+ has two operating modes, forward mode and reverse mode. In forward mode, the device can be used for a wide range of LED module applications such as automotive, industrial, and interior/exterior lighting. It is best suited for driving a single LED string from 6 to 30V, which also enables it to be used in 12V or 24V automotive or industrial applications. Additionally, it can be used to power LED strings of up to 4 W in forward mode, with a maximum current of 1.2A.

In reverse mode the device is suitable for powering LED strings of up to 6W with a maximum current of 0.7A. Furthermore, the device can be used for dimming applications, with a PWM frequency range of 500Hz to 60kHz. In addition to these capabilities, the MAX16835ATE+ supports linear and constant-current regulation, as well as pulse-width modulation at up to 4MHz.

Working Principle

The MAX16835ATE+ works based on a buck-type switching converter. This means that the device extracts power from a high voltage supply, converts that power into a lower voltage, and then regulates the output voltage and current. This enables it to provide the necessary current and voltage to drive the LED module or string. The device also employs several current-mode and feedback control mechanisms to ensure efficient operation.

In forward mode, the device works on a buck-type converter. In this mode, the MAX16835ATE+ switches an inductor to create a pulse-width-modulated (PWM) output voltage. This PWM output voltage is then buffered by a low-pass filter to create a regulated output voltage. The output voltage can be further regulated using an external resistive divider if necessary.

In reverse mode, the device functions on a buck-boost converter. In this mode, the inductor is switched in reverse to the forward mode, creating a positive PWM output. This output is then buffered by a low-pass filter to create a regulated output voltage. Again, an external resistive divider can be used to further regulate the output voltage if required.

Conclusion

In conclusion, the MAX16835ATE+ is a device among many PMIC LED drivers that can address a wide range of LED module applications. It is suitable for automotive and industrial applications, as well as interior/exterior lighting and dimming applications, with current ratings up to 1.2A in forward mode and 0.7A in reverse mode, and a maximum PWM frequency of up to 4MHz. The device works based on a buck-type switching converter and flux-mode LED driver and incorporates a number of current-mode and feedback control mechanisms to ensure efficient operation.

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