FAN5400UCX Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	Current, Timer, Voltage
Fault Protection:	Over Temperature, Over Voltage, Short Circuit
Charge Current - Max:	1.25A
Battery Pack Voltage:	4.5V (Max)
Voltage - Supply (Max):	6V
Interface:	I²C, USB
Operating Temperature:	-30°C ~ 85°C (TA)
Package / Case:	20-UFBGA, WLCSP
Supplier Device Package:	20-WLCSP (1.96x1.87)
Base Part Number:	FAN5400

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PMIC - Battery Chargers - FAN5400UCX application field and working principle

When it comes to emerging technological advancements, portable electronic devices are becoming increasingly important. Mobile phones, laptop computers, tablets and many other electronic gadgets are becoming essential parts of everyday life and their functionality and usability is dependent on efficient and reliable batteries. In order to ensure that these batteries are kept in good condition, reliable power management IC\'s (PMIC\'s) are needed. The FAN5400UCX is an integrated PMIC designed specifically to provide reliable, efficient power management and battery charging solutions for small form-factor portable electronic devices.The FAN5400UCX is a four-channel, current and temperature-controlled, high-efficiency, battery charging system that provides complete power management for 5V regulated systems. It integrates a 3.2V/5V voltage regulator, a dual-channel buck converter, a buck-boost converter, a current and temperature based charging module, and a reverse current protection module. The IC offers superior time over-voltage protection and configurable over-current protection in order to ensure safety and reduce the system\'s thermal stress. It also offers low external component count, as well as improved system reliability. This versatile integrated PMIC is suitable for a variety of applications, including mobile phones, MP3 players, digital cameras, and medical instruments. It can be used to charge single or multiple cells, Lead Acid and NiMH batteries, providing a simple and reliable solution while reducing the external components required.The FAN5400UCX can be configured to work as either a single-cell or a multi-cell charger. In a single-cell configuration, the regulator converts the input voltage to the desired output voltage and feeds it through a dual-channel buck converter to adjust the current to the desired level. It then feeds this adjusted current to the charging module in order to charge the battery. For a multi-cell configuration, the buck converter adjusts the output of the regulator to the desired level and feeds it to the buck-boost converter, which in turn adjusts the output of the regulator to the desired level and feeds it to the charging module in order to charge the battery.The charging module uses a voltage-based control scheme to regulate the charging current. Initially, the charging current is limited to a predetermined maximum level, set by the user. As the battery approaches its full capacity, the charging current is gradually reduced by a temperature control scheme. When the temperature threshold is reached, the charging current is decreased in order to protect the battery from overcharging and over-voltage. When the battery reaches its fully charged capacity, the charger switches off.The reverse current protection module ensures that no current flows into the battery from the power supply, providing an extra level of protection. This is especially useful in multi-cell battery configurations, as a short circuit between one cell and another can provide a path for the current to flow from the power supply to the battery, causing damage to the cells.The FAN5400UCX integrated PMIC is an ideal solution for efficiently and reliably powering portable electronic devices and providing a safe, efficient, and reliable charging solution. Its versatile design and advanced features make it suitable for a wide range of applications, and its low external component count and improved system reliability make it a highly reliable and cost-effective choice.

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