LX1664ACD

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Applications:	Controller, Intel Pentium® II
Voltage - Input:	10.8 V ~ 13.2 V
Number of Outputs:	2
Voltage - Output:	1.8 V ~ 2.8 V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	LX1664

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LX1664ACD Application Field and Working Principle

Introduction:

LX1664ACD is an advanced voltage regulator integrated circuit (IC) manufactured by Linear Technology Corporation. It is specifically designed for applications where space and power-saving is a priority, making it an excellent choice for applications such as portable electronics. The purpose of this article is to provide an overview of the LX1664ACD application field and working principle and to examine its performance in comparison to other voltage regulators.

Application Field:

The LX1664ACD is designed as a low-dropout (LDO) regulator, that can provide a constant supply voltage from a range of sources, either AC or DC, to operational amplifiers, digital logic, Charge Pump circuits, or any devices that require it. The LX1664ACD brings the output voltage very close to the input voltage by providing high load regulation, low-ripple, fast transient response, and low current draw at light loads. Furthermore, one of its main advantages is the 150mV dropout voltage, allowing it to operate from a wide input voltage range. The LX1664ACD is ideal for many operations requiring up to 1.2A of output current. This makes it suitable for various purposes such as, PC peripheral and laptop adapter systems, battery-charging systems, portable audio, and other portable devices.

Working Principle:

The LX1664ACD operates using a closed-loop feedback system. It is designed with dual-N-channel MOSFET architecture, consisting of a P-type MOSFET and an N-type MOSFET. The LX1664ACD uses the resistive-divider network to provide a reference voltage, usually set to a value of 1.8V. The reference voltage is then compared with the output feedback voltage which is generated by the output voltage divider network.If any difference exists between the reference voltage and the feedback voltage, then the P-channel MOSFET will turn on to transfer more current through the load, bringing the output voltage closer to the reference voltage. On the other hand, if the output voltage is above the reference voltage, then the N-channel MOSFET will turn on, restricting current flow to the load, thus driving the output voltage back down to the reference voltage.

Performance:

The LX1664ACD offers many advantages over other conventional voltage regulators, such as greater efficiency, smaller size, and improved performance. Its low dropout voltage of 150mV allows it to be used in a wide variety of applications with a very wide input voltage range. The high level of regulation accuracy and fast transient response also makes it ideal for applications requiring precise control.In comparison to other voltage regulators, the LX1664ACD has a higher output current capabilities of 1.2A, and offers a low quiescent current of 140μA. This low quiescent current allows it to be used in several low power applications.

Conclusion:

The LX1664ACD voltage regulator is an advanced, power-saving integrated circuit with a wide variety of applications. It operates using a closed-loop feedback system and is designed with dual-N-channel MOSFET architecture. It offers high load regulation, low-ripple, and fast transient response, as well as a low dropout voltage of 150mV. This makes it suitable for many low power applications such as PC peripheral and laptop adapter systems, audio systems and other portable devices. Furthermore, it has an output current rating of 1.2A and a low quiescent current of 140μA. its overall performance is much higher than conventional voltage regulators.

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