ISL6744AABZ

Frequency - Switching:	Up to 1MHz
Base Part Number:	ISL6744A
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 105°C (TA)
Control Features:	Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	99%
Series:	--
Voltage - Supply (Vcc/Vdd):	9 V ~ 16 V
Output Phases:	1
Number of Outputs:	1
Topology:	Full-Bridge, Half-Bridge
Output Configuration:	Positive, Isolation Capable
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

?

Introduction to ISL6744AABZ

The ISL6744AABZ is a digital Phase-Locked Loop (PLL) controller with integrated buck-boost regulator. It is part of the PMIC (Power Management Integrated Circuit) family of integrated circuits that are used to regulate and control the power in different applications. It is specifically classified under Voltage Regulators, DC DC Switching Controllers.

Application of ISL6744AABZ

ISL6744AABZ is used in applications such as Multi-Rail Power Supplies, Networking Equipment, Industrial Control Systems, Automobiles and Automation Tools. This device is designed to allow for the supply of different core and I/O voltages with the same supply voltage. It features an integrated high-efficiency buck transformer and sense resistor. ISL6744AABZ is also designed to allow for a large spread in output voltage without compromising design complexity. It is also used in automotive applications such as battery-less start of stop (BSOS) systems, where it acts as a medium to enable energy efficient on-demand switching with no load. This enables users to achieve low-power and space efficient solutions while simplifying system level design and power supply re-configurations. The ISL6744AABZ contains a pulse width modulated (PWM) controller and a dual-phase buck transformer driver. The controller has adjustable dead time, low voltage protection, and is protected against over-voltage, over-temperature and under-voltage conditions. Additionally, the device includes a dimming control input, which enables the user to adjust the power output of the device with a knob or switch.

Working Principle of ISL6744AABZ

The working principle of the ISL6744AABZ is based on the use of a PLL to maintain the frequency of the buck-boost regulator output in line with the input voltage. The PLL provides a signal for the controller which is used to determine the Buck/Boost switching points. The low voltage protection feature ensures that the output voltage does not drop below the specified nominal level. As a protection feature, the device also has an Over-Voltage Lockout (OVLO) circuit which prevents the PLL from working if the input voltage exceeds the device’s tolerance. This mechanism is important to protect components from damage due to excessive load or short circuit conditions. The device also has a built-in soft-start circuit which ensures a smooth output transition with minimum output voltage ripple. The soft-start circuit works by gradually increasing the output to its preset value and also provides protection against short-circuit conditions. The controller also includes a Sleep mode that allows the device to enter a low-power state when not in use. This feature helps in reducing overall power consumption.

Conclusion

The ISL6744AABZ is a digital PLL controller designed for medium to high-power current applications. It is part of the PMIC Voltage Regulators, DC DC Switching Controllers family and is used in a number of industries due to its superior power efficiency and cost effectiveness. Furthermore, its features such as OVLO, dimming control and Sleep mode offer a reliable and efficient solution for power management.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description