LP873222RHDRQ1

Series:	--
Part Status:	Active
Topology:	Step-Down (Buck) (2), Linear (LDO) (2)
Function:	Automotive
Number of Outputs:	2
Frequency - Switching:	2MHz
Voltage/Current - Output 1:	0.7 V ~ 3.36 V, 2A
Voltage/Current - Output 2:	0.7 V ~ 3.36 V, 2A
Voltage/Current - Output 3:	0.8 V ~ 3.3 V, 300mA
w/LED Driver:	No
w/Supervisor:	No
w/Sequencer:	No
Voltage - Supply:	2.8 V ~ 5.5 V
Operating Temperature:	-40°C ~ 125°C (TA)

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Introduction

LP873222RHDRQ1 is a two-stage buck arrangement for DC-DC conversion designed in a voltage regulator integrated circuit (IC) package. This IC is designed and made by Linear Technology and aimed at providing both cost and space savings when implemented in a product. By combining a step-down and a synchronous buck regulator in one package, LP873222RHDRQ1 gives designers an instant savings in their overall product solution while still providing high-performance regulation and accuracy.

Previous Work

Linear Technology has been in the voltage regulator and power management IC industry for more than three decades. They have developed a wide range of high-performance integrated circuits that accomplish a variety of power regulation tasks. Their LP873222RHDRQ1 is one example of their latest voltage regulators, offering a high-performance estimation and precision without sacrificing cost or size.

LP873222RHDRQ1 Application Field

LP873222RHDRQ1 is designed for portable applications where the space and cost savings of a two-stage step-down buck arrangement can be beneficial. LP873222RHDRQ1 can provide high-performance regulation with both cost and space savings when implemented in a product. LP873222RHDRQ1 can be used in a variety of places such as USB Type-C devices, mobile wirelss appliances, and CCTV devices. This IC can help limit the total output of the DC-DC converter to the protected devices and thus help prevent them from being over-powered or damaged. This can be especially important in low-cost electronics, where the costs of repair and replacement can be prohibitive.

LP873222RHDRQ1 Working Principle

LP873222RHDRQ1 is composed of two stages - a step-down Buck Converter and a synchronous Buck Regulator - which are integrated within one package. The step-down buck converter operates under the PWM (pulse-width modulation) method. It takes an input voltage of 6V to 32V and steps it down to a fixed regulated voltage with up to 95% efficiency. This results in a more efficient power management circuit and helps to keep costs and heat dissipation low.The synchronous buck regulator works by using a charge pump to generate a high-voltage clock signal that enables the switching of its internal MOSFET transistors. This allows the circuit to regulate the voltage over a wide range while still maintaining high-efficiency levels. The LP873222RHDRQ1 also includes many protection features such as thermal shutdown, overvoltage protection, and undervoltage lockout, which helps protect the IC and connected devices from damage.

Conclusion

LP873222RHDRQ1 is a voltage regulator IC designed and made by Linear Technology. It provides a cost and space savings solution for DC-DC conversion with high-performance regulation and accuracy. It can be used in a variety of applications such as USB Type-C devices, mobile wireless appliances, and CCTV devices. It is composed of two stages - a step-down buck converter and a synchronous buck regulator - and includes protection features such as thermal shutdown and overvoltage protection.

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