ISL9517HRZ-T

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Introduction

The ISL9517HRZ-T is an ultra-small, integrated, Li-ion and Li-ion polymer LiFePO4 (LFP) battery charging system solution with integrated USB power switches and regulators. It is designed to charge the single-cell battery from host USB, AC adapter or DC sources, support system wakeup to minimize power consumption for host device, integrate a USB current limit switch, support battery temperature sensing with NTC resistor, and integrate full protection features for system and battery. As a PMIC - Battery Chargers application, the ISL9517HRZ-T bas used for single-cell Li-ion and LiFePO4 battery charging with packs up to 8 cells in series.

Application field

The ISL9517HRZ-T is suitable for various single-cell Li-ion and LiFePO4 battery charging applications. Typical applications include power banks, smart phones, tablets, personal electronics, medical devices, point-of-sale terminals, and smart meters. Its complete range of features and extremely small package makes it ideal for space-constrained designs.

Working Principle

The ISL9517HRZ-T consists of a USB switch and regulator, and a battery charger with full protection features. The charger is capable of charging the Li-ion and LiFePO4 battery from the USB input, AC adapter, or external DC sources. It supports system wakeup to minimize power consumption for the host device, and supports detecting the battery temperature with a NTC resistor. The ISL9517HRZ-T prevents the battery from overcharging and damaging the health of the battery. It also supports non-chemical cell equalization of Li-ion battery. The ISL9517HRZ-T offers adjustable charging current and voltage settings, with an output current up to 1.5A. It also offers over-voltage protection, under-voltage protection, over-temperature protection, and charge-timeout protection to ensure reliable and safe battery charging.

Conclusion

The ISL9517HRZ-T is an integrated, ulta-small Li-ion and LiFePO4 battery charging system solution with inbuilt USB power switches and regulators. It is suitable for various single-cell Li-ion and LiFePO4 battery charging applications and is great for space-constrained designs. It protects the battery from overcharging and damaging the health of the battery, with adjustable charging current and voltage settings, over-voltage protection, under-voltage protection, over-temperature protection, and charge-timeout protection to ensure reliable and safe battery charging.

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