ISL89401ABZ-TK

Current - Peak Output (Source, Sink):	1.25A, 1.25A
Base Part Number:	ISL89401
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Rise / Fall Time (Typ):	16ns, 16ns
High Side Voltage - Max (Bootstrap):	100V
Input Type:	Non-Inverting
Series:	--
Logic Voltage - VIL, VIH:	1.4V, 2.2V
Voltage - Supply:	9 V ~ 14 V
Gate Type:	N-Channel MOSFET
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Half-Bridge
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Overview of ISL89401ABZ-TK

ISL89401ABZ-TK is a highly integrated advanced power management integrated circuit (PMIC) designed to simplify the power stage design of LED lighting systems up to 250W. This device is a member of the Interface, Secondary and Lighting (ISL) family of products from Intersil. It provides a number of features allowing lighting designers to maximize power efficiency and reduce system cost. This PMIC integrates a GreenPAK 5 field programmable gate array (FPGA), supporting configurable logic for innovative power conversion topologies, high-side and low-side MOSFET drivers, analog monitor functions and protection features.

Application Field

The ISL89401ABZ-TK is tailored to the requirements of the solid-state lighting industry and hence is suitable for driving white and colored lighting fixtures including low-voltage and high-voltage incandescent, fluorescent, halogen and HID lamps. It is also suitable for retrofitting existing luminaires operated from precision dimmers and DALI controllers, as well as for driving an inductive ballast. The product is highly flexible and offers:* 24V output capability* Precision analog dimming* Forward and flyback conversion* Up to 250W LED output* Configurable logic* Dual-mode or single-mode LED dimming controlThe ISL89401ABZ-TK is suitable for AC/DC front-end converters (HF or LF), AC/DC buck converters, AC/AC phase cut dimmers, constant current buck converters, constant current boost converters, phase shifted full bridge (PSFB) dimmers and universal dimmers. It is supplied in the industry-standard RoHS-compliant PWMB-24 package and easily interfaces with standard Intersil products including synchronous/non-synchronous buck/boost regulators, LED flash drivers, LED current regulators and LED dimmers.

Working Principle Overview

The ISL89401ABZ-TK integrates a GreenPAK 5 FPGA, high-side and low-side MOSFET drivers, analog monitor functions and protection features including:* Overvoltage protection* Peak current limiting* Thermal shutdown* Undervoltage lockoutThe FPGA supports configurable logic for innovative power conversion topologies, allowing designers to quickly implement custom power conversion designs. The high-side and low-side MOSFET drivers have:* 400kHz frequency* Active-Freewheeling for PFC* Undervoltage lockout for low start-up currentThe analog monitor functions enable load current monitoring, load voltage monitoring, output voltage monitoring and fault status reporting, while the protection features ensure that the system is optimized in terms of current, voltage and temperature. The device also supports a "Dim Down" feature which allows the user to reduce power without any software or hardware changes.In summary, ISL89401ABZ-TK is an advanced and highly integrated PMIC designed to simplify the power stage design of LED lighting systems. This device offers a number of features including configurable logic, dual-mode or single-mode LED dimming control and protection features. It is suitable for a variety of lighting fixtures including low-voltage and high-voltage incandescent, fluorescent and HID lamps, making it a cost-effective and reliable PMIC for LED lighting systems up to 250W.

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