LM3658SDX-A

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LM3658SDX-A is a high-performance advanced battery charger IC from Texas Instruments. This device is designed to fast-charge lithium-ion and lithium-polymer batteries from USB sources in a range of applications, such as mobile phones, notebooks, portable medical devices, and more. The intelligent charging capability of the LM3658SDX-A is built upon its USB-compliant power supply and advanced battery charging control circuit.

The LM3658SDX-A operates with input sources ranging from 100mV to 5.25V. Its integrated power MOSFETs allow it to deliver up to 1.5A of current with low power loss and supply a constant battery charge voltage. Additionally, the device features a low stand-by quiescent current of 0.2µA, so it only draws small amounts of power during idle periods. Its high efficiency and low noise switching frequencies help to reduce heat and audible noise.

The LM3658SDX-A offers several safety features to protect the battery from damage. Battery temperature is automatically monitored to detect battery overheating and prevent overcharging. This device also features active current and over-voltage limit control circuits to provide current and voltage protection for the battery. Additionally, an LED indicator is used to indicate when a battery is fully charged.

The LM3658SDX-A is designed for operation in both constant current (CC) and constant voltage (CV) charging modes. In CC mode, the current is set to a preset value, and the voltage is allowed to increase up to its preset charging value. In CV mode, the voltage is held at a preset value, while the current is allowed to gradually decrease.

The LM3658SDX-A also features end-of-charge detection and termination. This allows the device to detect when the battery is fully charged and shut off charging to prevent overcharging. Additionally, the device may also be configured to detect when the battery is below a certain voltage level and automatically resume charging.

Overall, the LM3658SDX-A is a versatile, high-performance battery charger IC from Texas Instruments. It is designed to fast-charge lithium-ion and lithium-polymer batteries from USB sources, while offering several safety features to protect the battery from damage. Its integrated power MOSFETs deliver up to 1.5A of current, while its low stand-by quiescent current helps to reduce power consumption during idle periods. Its dual charging modes (CC and CV) also ensure a safe and efficient charging process.

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