ISL1902FAZ-T7A

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

LED Drivers are essential components of light-emitting diode (LED) systems, which allow light-emitting diodes to produce light of different brightness and color. As one of the more popular PMIC components, the ISL1902FAZ-T7A is specifically tailored to the needs of LED system applications. This article will give an overview of the key applications and working principles of the ISL1902FAZ-T7A.

Applications

The ISL1902FAZ-T7A is a current-mode, high-speed LED driver with integrated high-side and low-side N-channel MOSFETs. The device operates on a supply voltage of up to 60V, enabling it to be used in a wide range of applications including automotive, industrial, Telecom, lighting, and medical. The device supports both single-channel and dual-channel operations, allowing it to be used for driving multiple LEDs with multiple power supplies. It also supports a variety of control inputs, including an analog input and a digital input. The device has a low quiescent current of 30mA, enabling it to be used in battery-powered applications.

Working Principle

At the heart of the ISL1902FAZ-T7A is a large-scale integrated circuit (LSI) with five pre-configured channels for driving the LEDs. Each channel has a separate input logic and output control logic, which enables the device to achieve both single and dual-channel operation. The device\'s logic control is based around a charge-pump switching regulator, which allows it to deliver up to 1.2A of current to the LEDs at a frequency of up to 5MHz. This in turn helps to minimize switching losses and improve efficiency. The device also features a built-in thermal protection circuit, which helps to protect against over-temperature conditions and thermal runaway.

The ISL1902FAZ-T7A also features an under-voltage lockout (UVLO) and an overvoltage protection (OVP) circuit. The UVLO ensures that the device is not activated when the supply voltage is too low, while the OVP prevents the voltage from rising above the maximum safe operating voltage of the device. Finally, the device supports both cycling and dimming operations, allowing it to adjust the brightness of each LED as desired.

Conclusion

The ISL1902FAZ-T7A is a high-speed LED driver with integrated high-side and low-side N-channel MOSFETs. The device is suitable for a wide range of applications, including automotive, industrial, Telecom, lighting and medical. It is capable of driving up to 1.2A of current to the LEDs, and supports both single and dual-channel operations. The device also features a built-in thermal protection circuit, UVLO and OVP, ensuring protection against over-temperature conditions and voltage fluctuations. This makes the ISL1902FAZ-T7A an ideal choice for a variety of LED lighting systems.

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