ISL97901CRZ-T7A

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ISL97901CRZ-T7A is classified as an LED driver integrated with device-specific Power Management IC (PMIC). This device can provide integrated power, management and protection features for lighting applications.

ISL97901CRZ-T7A is a member of the Intersil family of programmable PMICs which was designed to provide an integrated solution for lighting and display applications. ISL97901CRZ includes Intersil’s patented Nscroll-FET technology, which enables maximum efficiency while eliminating the need for an external control switch. This device is available in a compact, 4 mm x 4 mm, 24-pin QFN package and is rated for an operating temperature range of -40°C to +125°C.

The main function of ISL97901CRZ-T7A is to control the power switch to deliver a regulated current to the LED string. This device can support a wide range of input voltage from 4.5V to 36V, which allows it to be used in many different lighting applications. ISL97901CRZ-T7A is also designed to provide accurate current regulation and is capable of driving up to 10 LEDs in series. This device is further optimized for maximum efficiency and safety and includes features such as open- and short-circuit protection, over-temperature protection, and under-voltage lockout.

This device has a wide range of applications, including LED driving in automotive, entertainment and industrial lighting, backlighting in LCD displays, as well as power converters in consumer electronics. ISL97901CRZ is also suitable for LED Spotlight applications in which a linear output current is required, as well as LED strip lighting which requires a constant current across multiple LEDs.

ISL97901CRZ-T7A works by controlling the power switch through an adaptive Pulse Duration Modulation (PDM) scheme. This PDM scheme improves the efficiency and enhances the thermal performance of the device by reducing losses associated with the power switch. The control loop of ISL97901CRZ-T7A is composed of two stages, the voltage loop and the current loop. The voltage loop is used to determine the duty cycle of the power switch and the current loop is responsible for linearly modulating the LED current. This ensures that the LED current remains constant regardless of input voltage or temperature variation. In addition, this device includes embedded compensation to ensure an output current accuracy of ±3% across the entire temperature range.

In conclusion, ISL97901CRZ-T7A is a PMIC LED driver used to drive high-power LEDs in a wide range of applications. This device combines high efficiency with reduce board space while providing comprehensive protection features to ensure a safe operation of the lighting system. Furthermore, this device offers accurate current regulation which makes it suitable for applications that require tight control of the output current.

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