ISL6440IA

Frequency - Switching:	300kHz
Base Part Number:	ISL6440
Supplier Device Package:	24-QSOP
Package / Case:	24-SSOP (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Phase Control, Power Good, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	93%
Series:	--
Voltage - Supply (Vcc/Vdd):	5.6 V ~ 24 V
Output Phases:	2
Number of Outputs:	2
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tube

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The ISL6440IA is a configurable, high frequency, non-isolated synchronous buck controller with integrated MOSFET drivers, an integrated high frequency oscillator and a programmable current limit. This IC is well suited for a wide variety of applications ranging from point-of-load (POL) to industrial and telecommunication applications.The ISL6440IA synchronous buck controller is used to deliver power from the system’s power rail to the load. It is a critical component in any power delivery system, as it takes source voltage and currents, performs a range of arithmetic operations to control the timing, output voltage, and output current and generates required switching signals.The ISL6440IA features integrated low and high-side Gate Drivers that drive external MOSFETs and 100mA integrated Precision Gate Drive Outputs. There is also an integrated switched-mode 3.3V regulator that supports up to 80mA to supply additional system needs.ISL6440IA can be used in wide variety of applications such as Point of Load ( POL) Regulation for CPU computing cores, High Current Memory Terminals, FPGA Core, Digital Signal Processor (DSP) Core, Blu-Ray DVD, Digital LCD Television. It offers high efficiency, wide range of output voltage programming, and high precision regulation down to 0.5%.When it comes to working principle, the ISL6440IA synchronous buck controller reduces the input voltage to the output voltage that is required for each application. It is done by using Pulse Width Modulation ( PWM) technique.The PWM technique is based on the principle of switching a transistor ON and OFF at a high frequency depending on the required output voltage of the device. As the transistor is ON, current flows through the transistor, which reduces the voltage of the supply. As the transistor is OFF, no current flows and the voltage of the supply is restored. This process is repeated at a high frequency (typically in kHz range), and the ON and OFF cycles are modulated according to the application input voltage. This process forms the basis of PWM technique.In the ISL6440IA, the switching frequency is determined by the integrated high frequency oscillator, and it can be programmed over the range of 200 kHz to 2 MHz. The output voltage is regulated using a closed loop compensation technique.The ISL6440IA is a highly configurable synchronous buck controller that provides high efficiency, wide range of output voltage programming, and high precision regulation down to 0.5%. This makes it a great option for power delivery systems for a wide variety of applications.The ISL6440IA is a configurable, high frequency, non-isolated synchronous buck controller with integrated MOSFET drivers, an integrated high frequency oscillator, and a programmable current limit. This integrated circuit, or ‘IC’, is suitable for a wide range of applications, including point-of-load (POL) regulation for power supplies, high current memory terminals, FPGA cores, digital signal processors (DSPs), and Blu-Ray DVD digital LCD television. This IC offers high efficiency, wide range of output voltage programming, and high precision regulation down to 0.5%. In this article, we will discuss the application field of the ISL6440IA, as well as its basic working principle. The ISL6440IA IC is used to reduce the input voltage to an output voltage that is required for the particular application. This is done using a pulse-width modulation (PWM) technique, which works by switching a transistor ‘ON’ and ‘OFF’ at a high frequency. As the transistor is ‘ON’, current flows through the transistor, thereby reducing the voltage of the supply. When the transistor is ‘OFF’, no current flows and the voltage of the supply is restored. The switching frequency of the ISL6440IA is determined by an integrated high-frequency oscillator, the programming of which can range from 200 kHz to 2 MHz. The output voltage is regulated using a closed loop compensation technique.Due to its configurable design, the ISL6440IA is ideal for a range of applications. It is an important component for any power delivery system, as it controls hardware parameters, such as the timing of the output voltage and current, as well as generating the necessary switching signals. The high efficiency, precision and flexibility of this IC provide power solutions for range of applications, such as those mentioned above. In conclusion, the ISL6440IA is a high frequency, non-isolated synchronous buck controller with integrated MOSFET drivers, an integrated high frequency oscillator, and a programmable current limit. This IC is suitable for a range of applications, and its effective pulse-width modulation technique allows it to reduce the input voltage to an output voltage that is required for the specified application. Moreover, its configurable design allows it to provide solutions for a range of systems with high efficiency, precision and flexibility.

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