EL1848IWTZ-T7A

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EL1848IWTZ-T7A is a PMIC - LED Drivers, it is designed for driving high power LEDs. It comprises an active power factor correction stage with a boost converter and a mains isolating switch, allowing for nearly unity power factor and excellent power efficiency most of the time. Its benefits include advanced integration of components, full power factor correction, high output voltage accuracy and temperature-compensated overvoltage protection (OVP).

A PMIC - LED driver is an integrated circuit (IC) containing all the necessary components for running a high-power LED, typically from a 12V or 24V power supply. As LEDs continue to progress in popularity due to their long-life and low energy consumption, LED drivers have become integral in protecting and extending the life of LED bulbs.

EL1848IWTZ-T7A specifically is designed to offer a power factor better than 0.9 and efficiency greater than 0.93 at conduction angles of 180° or higher even at very low load currents. It features a single-channel output, adjustable overvoltage protection, overtemperature protection, active power factor correction and overload protection. The device can be paralleled to get a higher output current capability, while addition of a secondary feedback pin allows the output voltage to be adjustable.

Application Field

EL1848IWTZ-T7A can be used in a wide range of LED driving applications, including lighting, industrial lighting, automotive lighting, LED display panel and security lighting. It can also be used in other applications that require a single high power LED, overvoltage protection and power factor correction, such as LEDs for medical devices and various kinds of information displays.

Working Principle

EL1848IWTZ-T7A is a high power LED driver IC with a single output channel. It works by using the active power factor correction (PFC) technique to draw current harmonics from the power line, pre-charging an inductor and then transferring power to the output with a Boost converter. The over-voltage protection circuit is designed to protect the LEDs against overvoltage conditions, while the over-temperature protection circuit will shutdown the IC when a temperature threshold is exceeded. The IC is designed to operate in both disconnection and reconnection mode when in disconnection mode, the PFC will be enabled and the boost converter will operate in discontinuous mode, while in reconnection mode, the PFC will be disabled and the boost converter will operate in continuous conduction mode.

EL1848IWTZ-T7A also features an adjustable output voltage, allowing for the output voltage to be set as desired. The current limit is also adjustable, allowing for a finer control of the current flowing through the LED. The IC also has advanced integration of components and overload protection, allowing for improved reliability and robustness in the application.

EL1848IWTZ-T7A is a highly integrated LED driver IC that offers the performance and reliability needed for a variety of LED driving applications. Its high power conversion efficiency, advanced protection features and high output voltage accuracy make it ideal for driving high power LEDs.

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