LP2997MX/NOPB

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	DDR-II Terminator
Current - Supply:	320µA
Voltage - Supply:	2.2 V ~ 5.5 V
Operating Temperature:	0°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	LP2997

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LP2997MX/NOPB Application Field and Working Principle

Introduction

LP2997MX/NOPB is a type of power management integrated circuit (PMIC) device that is specially designed to provide power solutions for consumer electronics and other high-performance applications. This PMIC device is suitable for providing low ripple, high-accuracy power supply design for applications that demand low power requirements. It is a versatile device tailored for a wide array of consumer applications.

Application Field

Low power is critical for battery operated electronic equipment, and the LP2997MX/NOPB is optimized to provide the low power delivery required. It assists in providing a stable, high efficiency supply in order to prolong battery life by reducing power consumption and increasing the battery life duration. A variable external voltage can applied to the PMIC, under 1.8V - 4.8V range. It is also designed to provide very low quiescent current (I_Q), which is typically at 0.8µA at 3V.Computer equipment also require low power and high accuracy supply, typically with a wide scope under 1.3V - 5.5V range, and the LP2997MX/NOPB can be a suitable device for these applications. Its over temperature protection feature prevents any system damage due to temperature malfunction. The LP2997MX/NOPB also features an adjustable current limit for broadcast digital TV applications or other communications equipment, in order to prevent any current overload.

Working Principle

The LP2997MX/NOPB is a highly efficient switching device, a boost/ buck/ invert power module with a linear regulator. It works based on the principle of voltage and current regulation, where a specified voltage and current is produced by applying an input voltage. The device operates off an input voltage of 1.8V to 4.3V.The LP2997MX/NOPB is a HVIF (High Voltage Interface) device, which applies an external high voltage to the buck inductor, and it is controlled by driving the external PMOS switch. Upon applying electricity to the boost inductor, the PMOS switch is enabled by the HVIF block. This is then followed by the closing of the PMOS switch, and the start of the buck operation. During the buck operation, energy from the input voltage is transferred to the output voltage via the buck inductor.The LP2997MX/NOPB also contains a linear switching regulator with shutdown functionality, which uses a dual synchronous rectifier structure to transfer its input voltage to the output voltage. This synchronous rectifier operates in current mode in order to reduce power losses and to achieve higher output voltage ripple. The main characteristics of the switching regulator are controlled by injecting a control signal.

Conclusion

LP2997MX/NOPB is a type of PMIC device which provides stable and accurate power delivery, as well as a prolonged battery life in low power and high performance applications. It can be used in both high voltage and low voltage applications, from TV and radio broadcasts to computers and other electronic equipment, thanks to its feature to limit current. Its working principle is based on the principle of voltage and current regulation, and the linear voltage regulator operates in current mode to reduce power losses.

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