ISL6753AAZA

Frequency - Switching:	Up to 2MHz
Base Part Number:	ISL6753A
Supplier Device Package:	16-QSOP
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 105°C (TA)
Control Features:	Frequency Control, Ramp, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	99%
Series:	--
Voltage - Supply (Vcc/Vdd):	9 V ~ 16 V
Output Phases:	1
Number of Outputs:	1
Topology:	Full-Bridge
Output Configuration:	Positive, Isolation Capable
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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ISL6753AAZA: Application Field and Working Principle

ISL6753AAZA is a voltage regulator and DC-to-DC switching control IC device made by Intersil. It belongs to a family of integrated circuit ("IC") components in the class typically referred to as "PMIC - Voltage Regulators - DC DC Switching Controllers".

Overview of the ISL6753AAZA

The ISL6753AAZA is a monolithic, high-efficiency, pulse-width-modulated (PWM) DC-to-DC switching regulator and control IC designed for use in personal computers and other general purpose applications. It combines the functions of a PWM controller, an operational amplifier, and various other components in one package. It is specified for voltages up to 16V input and up to 5.5V output. It is available in a variety of packages, and can be ordered with different varying output current capabilities from 4A to 20A.

Application Fields of the ISL6753AAZA

The ISL6753AAZA can be used in several applications, including personal computers, laptops and netbooks:* Power supplies: The ISL6753AAZA is a highly efficient device that facilitates the design of power supplies in the most challenging applications. From a laptop\'s power supply unit to high-current DC-DC converters in service robots or unmanned vehicles, the ISL6753AAZA\'s high efficiency makes it the perfect choice.* Industrial applications: The ISL6753AAZA also finds its application in industrial settings, such as power management for solar-powered systems, as well as in autostronghouses, automatic testing equipment, vacuum cleaners, and electronic toys. * Automotive applications: The ISL6753AAZA can also be found in automotive applications, such as in on-board chargers, LCD TV sets and car stereos. In addition, it can be found in automotive control boards, and in light-emitting diode (LED) lighting circuits.

Working Principle of the ISL6753AAZA

The ISL6753AAZA is a synchronous, step-up DC-to-DC buck-boost converter. It uses an inductor and a capacitor to step up the voltage in the input voltage range to the output voltage range. The ISL6753AAZA accurately controls the buck-boost converter\'s duty cycle to ensure the output voltage stays within a regulated range. The ISL6753AAZA is based on a Pulse Width Modulation (PWM) control loop. This control loop is used to control the duty cycle of the switching MOSFETs in the buck-boost converter. The duty cycle is determined by the voltage present at the output of the error amplifier. A reference voltage is fed to the inverting input of the error amplifier, and the error amplifier produces an output proportional to the difference in the two voltages. This output is outputted to the PWM comparator, which acts as a pulse generator, which in turn controls the switching MOSFETs. This ensures that the output voltage is accurate and does not overshoot or undershoot from the intended level.

Conclusion

The ISL6753AAZA is a highly efficient, PWM DC-to-DC switching regulator and control IC. It is also highly versatile, and can be used in a variety of applications, including power supplies, industrial applications, and automotive applications. Its working principle is based on a PWM control loop, which accurately controls the duty cycle of the switching MOSFETs in order to maintain the output voltage at its intended level.

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