Series:	*
Packaging:	Tape & Reel (TR)
Part Status:	Active
Package / Case:	--
Supplier Device Package:	--
Base Part Number:	LP3922

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Introduction

The LP3922RL-B/NOPB is a PMIC/Battery Charger that integrates high-efficiency charge controller, power path, and power management functions. It is designed to support systems that require power management and charging of single cell Li-Ion and Li-Polymer batteries. It is an ideal device for applications that are used in mobile phones, digital cameras, digital video recorders, and other portable products.

Application Field and Working Principle

The LP3922RL-B/NOPB PMIC/Battery Charger has a wide application field. It can be used to charge Li-Ion and Li-Polymer batteries in mobile phones, digital cameras, digital video recorders, and other portable products. It can also be used in applications that require power management and/or battery charging in hand-held computing devices, PDAs, and other low-power, portable systems. The LP3922RL-B/NOPB features an accurate voltage regulation loop with an adjustable charge current and requires no external sense resistor.The LP3922RL-B/NOPB works by using an internal N-channel MOSFET in a buck converter topology. This buck converter topology is able to provide high efficiency by using PWM (pulse-width modulation) to regulate output voltage. The LP3922RL-B/NOPB can also be used as an adjustable voltage converter or as a boost regulator to generate up to 15V at up to 1A. It includes an integrated low dropout regulator and reverse-blocking circuitry to protect against short circuits.The LP3922RL-B/NOPB can be used for power management in battery-powered systems. It can provide accurate and efficient power delivery as well as thermal protection for the device. It includes an internal power switch and current-sense circuitry, which provides protection against over-charging and short-circuits. The LP3922RL-B/NOPB can also function as a power path device, providing seamless control of the power flow between a system’s power sources and its load.

Conclusion

The LP3922RL-B/NOPB PMIC/Battery Charger is an ideal device for applications that require power management and/or battery charging in hand-held computing devices, PDAs, and other low-power, portable systems. It features an integrated power switch, current-sense circuitry, and reverse-blocking circuitry to protect against over-charging and short-circuits. Its accurate voltage regulation loop with an adjustable charge current requires no external sense resistor. The LP3922RL-B/NOPB is an efficient and reliable solution for battery charging and power management needs.

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