LTC3300HLXE-2

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Power management integrated circuit (PMIC) is an essential component in various electronic devices, especially those with portable designs. The LTC3300HLXE-2 is a PMIC designed for battery management. It can be found in consumer products, telecommunications equipment, medical devices, industrial and instrumentation systems. In this article, we will discuss the application fields and working principle of the LTC3300HLXE-2.

Application fields

The LTC3300HLXE-2 is a highly integrated PMIC that provides a complete power supply solution for almost any battery-operated portable device. It integrates several features that are advantageous for certain applications, including:

• An integrated buck-boost DC-DC converter that can manage input voltages lower, equal or higher than the output voltage.
• An advanced Battery Fuel Gauge with average current and Coulomb counting capability.
• A programmable power delivery system to prioritize between input supply, battery and load.
• Protection features for overload, short-circuit and battery overload.
• Redundant overvoltage/undervoltage protections.

The integrated buck-boost feature of the LTC3300HLXE-2 allows it to provide a reliable power supply for a range of portable and wireless devices, including wireless routers, modems, and wearables. The integrated Battery Fuel Gauge lets the system track the remaining capacity of the battery and provides accurate power-management decisions throughout the product life. Moreover, the programmable power delivery system makes it a suitable solution for telecommunication base stations and chargers, which require a reliable and efficient power supply.

Working Principle

The architecture of the LTC3300HLXE-2 is based on an integrated buck-boost DC-DC converter, an intelligent power delivery system and a Battery Fuel Gauge. The buck-boost DC-DC converter is used to convert an input voltage higher, equal or lower than the output voltage to the required amount. The voltage is then regulated with a pulse width modulation (PWM) or pulse frequency modulation (PFM) controller.

The integrated battery fuel gauge is used to detect and measure the remaining capacity of the battery. It is capable of average current-sensing and Coulomb counting, which are important features for power-efficient and accurate battery management. It also includes a built-in over- and under-voltage protection to protect the battery against draining or overcharging.

The integrated power delivery system is used to prioritize between input supply, battery and load. This allows the product to deliver the exact amount of power desired and to reduce the time needed for current load transient responses. Moreover, the system provides programmable hysteresis, is withstand overvoltage and short-circuit events, and provides a programmable current limit.

All these features combined make the LTC3300HLXE-2 a suitable solution for various portable and wireless products. Its high integration level and advanced protection features improve the reliability and usability of the system.

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