FAN5405UCX Integrated Circuits (ICs)

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The FAN5405UCX is a battery charger integrated circuit (IC) designed for general use. It is part of the Texas Instruments portfolio of power management integrated circuits (PMICs). The device is designed to accurately and reliably manage charging of a single lithium-ion cell. Because of its low noise and low cost, it is well-suited for applications such as mobile phones, MP3 players, digital cameras, and personal navigation devices.

The FAN5405UCX is a highly integrated device that includes a high-efficiency boost converter, a P-channel MOSFET, an adjustable current source, a charge pump, and protection features. The device has a built-in overvoltage protection (OVP) circuit to protect the battery from being overcharged. It also has an overcurrent protection (OCP) circuit to protect against short circuits. The device also includes an undervoltage lockout (UVLO) circuit to protect the charger from damage due to low input voltages.

The device can be used in a wide range of applications, but its primary use is in battery chargers for portable electronic devices. It is designed to provide a safe and reliable charging current for a single cell Li-Ion battery. It has a wide range of input voltages, from 4V to 22V, and can provide up to 1.2A of charging current. The device is also highly efficient, with efficiency reaching up to 95%.

The FAN5405UCX has two operating modes: constant-voltage and constant-current. In constant-voltage mode, the device will output a constant voltage to the battery, regardless of the battery’s voltage. In constant-current mode, the device will output a constant current to the battery, regardless of the battery’s voltage. The device has a digital interface that allows for selection of the operating mode and setting of the output current or voltage. It also has two enable pins, one for enabling the boost converter and one for enabling the overvoltage protection (OVP).

The FAN5405UCX provides a wide range of features, including temperature protection and reverse blocking, as well as safe charging algorithms such as the thermal runaway protection (TRP) and charge monitor. The device also has a low-battery detect (LBD) input and a charge status output. The charge status output can be used as a signal to indicate the battery is full or if there is an error in charging. The device also includes input overvoltage protection (OVP) circuitry to protect the charging circuit against high voltage and current.

In summary, the FAN5405UCX is an integrated low noise, low cost, battery charger specifically designed to manage the charging of a single cell Li-Ion battery. It is designed to provide a safe and reliable charging current and has a wide range of input and output voltages. The device also has a wide range of features, such as temperature protection, reverse blocking, and safe charging algorithms. The device is well-suited for applications such as mobile phones, MP3 players, digital cameras, and personal navigation devices.

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