LX7180A-11CLQ-TR Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Output Type:	Programmable
Number of Outputs:	1
Voltage - Input (Min):	3V
Voltage - Input (Max):	5.5V
Voltage - Output (Min/Fixed):	0.6V
Voltage - Output (Max):	5.5V
Current - Output:	4A
Frequency - Switching:	1.65MHz
Synchronous Rectifier:	Yes
Operating Temperature:	0°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	12-VFLGA
Supplier Device Package:	12-QFN (2x2)
Base Part Number:	LX7180

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Introduction

The LX7180A-11CLQ-TR is a DC-DC switching regulator that is popular in the power management integrated circuit (PMIC) or voltage regulator market. The regulator provides efficient, small footprint and low-cost power supply solutions for both point-of-load (POL) and intermediate bus-voltage applications. It is designed with a synchronous step-down, buck converter topology, making it suitable for low-voltage, low-power point-of-load (POL) applications.

Application

The LX7180A-11CLQ-TR is a voltage regulator that is capable of supplying up to 12V output voltage with a low current draw, while being able to drive up to 500mA of load current. It is widely used in automotive, industrial and consumer applications as it has excellent transient response and good thermal characteristics. It is often used in low- and mid-power, low voltage applications such as LED driver and battery-powered equipment and telecom circuits.

Working Principle

The LX7180A-11CLQ-TR DC-DC switching regulator consists of a voltage regulator to provide a regulated DC output voltage from an unregulated input voltage. The switching regulator operates on the basic principle of operating in a certain period, if the voltage drops below the specified setpoint for that period, then it will turn off the current to regulate the output. The input voltage is transformed into a smaller output voltage and then the regulator keeps the output voltage at the predetermined level by switching the output voltage of the input power source. The regulator is capable of providing constant current output and wide range of input voltages with high efficiency. The switching frequency is adjustable to meet the requirement of various applications. The LX7180A-11CLQ-TR has an integrated over-current protection which triggers at 1.5A. The stepping-down output voltage accuracy is ±2 % over the specified operating conditions.

Conclusion

The LX7180A-11CLQ-TR DC-DC switching regulator is an efficient, small-footprint and low-cost power supply solution that is ideal for a wide range of applications. The regulator is capable of efficiently providing constant current output and wide range of input voltages, while also having excellent transient response and good thermal characteristics. With an integrated over-current protection feature, the LX7180A-11CLQ-TR is well-suited for applications such as LED driver and telecom circuits which have a high sensitivity to current and voltage.

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