LTC1960CG#TRPBF

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Power management reference design solutions such as the LTC1960CG#TRPBF are invaluable for a range of specialized and prominent applications in modern electronics. Here we provide an overview of the types of applications where the LTC1960CG#TRPBF is suited, as well as a closer look at the principles behind its operation.

LTC1960CG#TRPBF: Applications

The Linear Technology LTC1960CG#TRPBF is a dual-cell, 1A/50mA switching, constant-current/constant-voltage Li-ion battery charger, which can be used to charge Li-ion/polymer batteries that are configured in series, or alternatively drive Li-ion/polymer batteries connected in parallel. It is particularly well-suited to high-powered, multi-cell applications, where their ability to handle very high input voltage, up to 16V, is valuable.

Primarily, this powerful device is designed to provide battery charging and power management solutions in a huge range of fields. From robotics, to the automotive industry, to consumer electronics, the LTC1960CG#TRPBF provides all the functions necessary to build sophisticated battery packs and reliable power management systems. Its high switching frequency also supports fast charging times and efficient power conversion, making it stand out as a great choice for industrial or general-use applications.

The LTC1960CG#TRPBF’s flexibility and performance also make it an ideal choice for telecom, wireless and stationary application systems, particularly where high-power consumption is expected or needed. This includes the likes of Uninterrupted Power Supply (UPS), communications base stations, and other power-hungry systems and applications.

The LTC1960CG#TRPBF is uniquely placed to cater for a wide range of charging requirements, making it suitable for many different types of batteries and cell arrangements, from single-cell Li-ion and Li-polymer, to dual-cell and high voltage Li-polymer. It also features adjustable output current and voltage range through the input of an external resistor, allowing custom voltage and current level to be met. Combined with its precision current-sense amplifier, it solves the design challenges that arise when dealing with a variety of battery chemistries.

Working Principle

The LTC1960CG#TRPBF charging controller is fully integrated into a small 16-pin package, yet performs all traditional functions of a linear charger and various power controllers. It is a switching battery charger that uses pulse width modulation (PWM) to regulate the current and voltage delivered to the battery pack.

The LTC1960CG#TRPBF core is a simple, but effective, PWM architecture. Its current mode PWM control circuit includes both short-circuit and over temperature protection. It uses an external resistor to set the output current for the desired charging cycle. On power up, the charge current is set by the external resistor. The voltage range is programming using an external resistor divider and is adjustable from 0.9 to 4.2V.

Once the set current level is met, the charge will finish, and the device will automatically enter the sense and terminate stages, automatically transitioning to its standby condition. At all times, the device will monitor the voltage, current, and temperature of the battery to ensure it is always enabled. This protection prevents any damage, either to the battery or the charger, while maintaining optimal voltage and current.

The LTC1960CG#TRPBF is also fast, with a 1A maximum charge rate that can reach a full charge in as little as 2.5 hours. Its low-dropout (LDO) operation also ensures that there is no generated heat that affects output voltage accuracy or stability.

Conclusion

The LTC1960CG#TRPBF is a highly versatile and powerful dual-cell, 1A/50mA switching, constant-current/constant-voltage Li-ion battery charger, which offers a single solution for all battery charging applications from single-cell to high-voltage Li-polymer. It is ideal for many different fields, ranging from robotics to consumer electronics, and provides enhanced safety and performance through its ability to detect and protect against overcurrent, overtemperature, and short-circuit conditions. Its precision current-sensing amplifier also allows for greater control and performance optimization. All of this combines to make the LTC1960CG#TRPBF an excellent choice for any Li-ion/polymer battery charging and power management application.

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