ISL97682IRTZ-TR5509

The ISL97682IRTZ-TR5509 is a power management integrated circuit (PMIC) that serves as a LED driver. Application fields include industrial, commercial and residential buildings, automotive, portable equipment, and any other type of system or device requiring power driving for its components or sub-systems. The ISL97682IRTZ-TR5509 is designed to be used as a constant current output source, providing a highly efficient approach to driving LEDs by limiting current and eliminating any need for ballast resistors.

Working principles are based on the use of charge pump topology which employs two external capacitors and an internal current limit controller. First, the two capacitors are charged up, and when the voltage on one capacitor reaches its peak, the controller in the circuit is triggered and the two capacitors are discharged. This process repeats continuously, resulting in a steady current output with very low ripple. The controller also allows adjustment of the current limit and over-temperature protection.

The ISL97682IRTZ-TR5509 is specifically designed to drive LEDs, and it offers a number of features that make it ideal for this purpose. It is capable of driving up to three strings of LEDs and provides output currents up to 1A. It has adjustable ripple rejection, which is important for LED applications, as well as adjustable frequency up to 500kHz and Dimming Control, allowing it to be integrated into various lighting systems.

Additional features of the ISL97682IRTZ-TR5509 include protection for open and short circuit LED strings, and the ability to sense open LED strings in parallel. It also has an internal protection diode which eliminates the need for an additional external diode. This diode is designed to allow the current to pass in one direction, thus protecting against reverse current. In addition, the IC features a low-power shutdown mode which enables efficient power management when no output is needed.

The ISL97682IRTZ-TR5509 is a versatile and efficient power manager specifically designed for driving LEDs. Its adjustable current limit, ripple rejection and dimming control features make it a great choice for many lighting applications. It has low power consumption and the ability to sense open LED strings in parallel, along with its integrated protection diode, makes it a great choice for using in electronics.