LTC4080XEMSE#TRPBF

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This article will give an overview of the LTC4080XEMSE#TRPBF, which belongs to the PMIC - Battery Chargers category. This device is a low-voltage, low quiescent current battery charger used to charge single-cell lithium ion batteries up to 1.9A.

The LTC4080XEMSE#TRPBF is an ideal solution for applications such as cell phones, cameras, toys and other devices that require low-power, low-noise battery charging. It features a very low (less than 10µA) quiescent current in shutdown mode and fast charging rates up to 1.9A. It also supports a programmable temperature monitor, safety timer, adjustable charge current, and low input voltage rating.

The key features of this device include:

• Programmable current limit
• Safety timer
• Programmable thermal threshold
• Enable/disable options
• Kick-start undervoltage lockout
• Low input voltage rating (1.05V typical)
• Low standby current (9µA typical)
• Very low RDS(ON) of MOSFET

The LTC4080XEMSE#TRPBF is a constant voltage/constant current battery charger for single-cell Li-ion or LiPo cells. It is designed to quickly and efficiently charge a Li-ion cell at high current, while containing low quiescent current (<9µA) in disable mode. It is designed to work with a switching power supply and is optimized to provide very fast charging rates up to 1.9A while minimizing the number of external components required. The device also features a programmable current limit, enable/disable option and a safety timer.

The charging process is initiated by applying a high-efficiency DC/DC converter to the input of the device. The device then switches the converter on and off based on the voltage and current applied to the battery. When the battery voltage is below the set charging voltage, the charger will charge with a constant current and when the battery voltage reaches the set point, the charger changes to a constant voltage. When the safety timer is enabled, the device will cease charging when the timer expires. Once the timer does expire, the device will transition to a low quiescent current, disabling the input voltage, saving power.

The LTC4080XEMSE#TRPBF is a device designed for safety and reliability. It has a number of features designed to prevent over-charging and over-discharging of the battery, including a programmable thermal threshold and programmable current limit. If the battery reaches its thermal limit, the device will cease charging and then restart automatically when the battery cools down. It also features an adjustable current limit that limits the current applied to the battery, preventing over-charging and extending the life of the battery.

The LTC4080XEMSE#TRPBF is an ideal solution for applications such as cell phones, cameras, toys, etc. It is designed to reduce the size and complexity of the power supply, reduce component count and cost, and provide a power efficient, dependable battery charging solution.

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