LTC1325CSW#PBF

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The LTC1325CSW#PBF is a highly integrated charging solution that is ideal for both consumer and embedded applications. It integrates the power manager, charger, Lithium-ion battery pack monitor, and system control in one package, making it an all-in-one solution for mobile power applications. The broad range of features of this product make it a suitable choice for applications in consumer, automotive, and industrial products.

Overview of the LTC1325CSW#PBF

The LTC1325CSW#PBF is an integrated power management integrated circuit (PMIC) from Linear Technology. It includes a charge pump, user-programmable charge rate circuitry, two high-efficiency switching regulators, and two programmable current-sensing regulators. This device is specifically designed to generate both system power and battery charging voltages to power embedded applications while monitoring the battery system. It is available in a 6-mm2 device.

The LTC1325CSW#PBF is designed to reduce overall system power dissipation and cost by combining multiple subsystems into a single device. The highly integrated power management features of the device provide the system designer with flexibility in selecting the appropriate power source and power level.

Application Fields

The LTC1325CSW#PBF is most suitable for use as a battery charger for applications with multiple power sources. Examples include automotive, computing, networking and communication, medical equipment, consumer electronics, and portable computing. This device can also be used to powering embedded control systems and embedded applications such as digital signage and industrial machinery.

The device can be used to provide power to a wide variety of platforms such as mobile phones, smartphones, PDAs, and other handheld devices. In addition, it can be used for powering media players, automotive audio systems, notebook PCs, and other portable devices.

Working Principle

The LTC1325CSW#PBF integrates the power manager, charger, Lithium-ion battery pack monitor, and system control in one package. The device features a power supply capable of delivering up to 8A of output, with programmable charge current from 0.2A to 4A. It also incorporates two high-efficiency switching regulators and two programmable current-sensing regulators. The device will monitor the battery voltage and current during the charging process and shut down or skip cycling if the battery is full or if any conditions arise that indicate improper charging. In addition, the charger will reduce the charge current automatically if the battery is too warm or if an over-temperature situation arises.

The device uses a proprietary system-level control scheme which all four of the main power management integrated circuits -- the power manager, charger, Lithium-ion battery pack monitor, and system control -- communicate with one another. This allows the device to optimize performance and reduce power dissipation and cost.

Conclusion

The LTC1325CSW#PBF is a highly integrated PMIC for monitoring, conditioning and charging lithium-ion battery packs. It delivers up to 8A of output current, with programmable charge current from 0.2A to 4A. The device includes a power manager, charger, Lithium-ion battery pack monitor, and system control, and uses a proprietary system-level control scheme for efficient power management. This device is suitable for a wide range of applications, such as automotive, computing, networking and communication, medical equipment, consumer electronics, and portable computing.

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