BQ25600YFFR Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant
Programmable Features:	--
Fault Protection:	Over Voltage
Charge Current - Max:	3A
Battery Pack Voltage:	4.6V (Max)
Voltage - Supply (Max):	13.5V
Interface:	I²C
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	30-UFBGA, DSBGA
Supplier Device Package:	30-DSBGA

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Introduction

The BQ25600YFFR is a battery charger integrated circuit (IC) from Texas Instruments. This chip is a highly advanced PMIC device capable of charging a single-cell Li-ion or Li-polymer battery with a high-accuracy battery voltage, current, and temperature protection. The device is capable of performing multi-phase charging and features a true 3-level charge control algorithm, providing full battery charging control with no external current-sense circuitry and no external components.

Applications

The BQ25600YFFR is used in a variety of applications where a battery needs to be safely and efficiently charged. Examples include portable medical devices, energy harvesting systems, and consumer electronics, such as smartphones and tablets. The chip is compatible with popular single-cell Li-ion and Li-polymer battery chemistries, such as Lithium Cobalt Oxide (LiCoO2), Lithium Manganese Oxide (LiMn2O4), and Lithium Iron Phosphate (LiFePO4).

Features

The BQ25600YFFR has a wide range of advanced features that make it a great choice for battery cell charging applications. These features include:-High-accuracy battery voltage and current measurement and control-True 3-level charge control algorithm-Multi-phase charging capabilities-Auto-system shutdown after charge completion-Battery capacity tracking-Advanced safety features-Smart recharge capability

Working Principle

The BQ25600YFFR utilizes a proprietary 3-level charge control algorithm to ensure full battery charging control. During charging, the chip performs a 4-phase process that includes:-Pre-charge - a low-current charging phase used to initiate charging and assess the battery’s electrical characteristics-Constant Voltage (CV) - a constant voltage phase used to bring the battery’s voltage to the set target without overcharging the battery-Constant Current (CC) - a constant-current phase used to manage current drawn from the power supply-Constant Power (CP) - a constant-power phase used to charge the battery with a predetermined power levelAt the end of each phase, the chip will assess the battery’s voltage and current. If the battery’s voltage is too low, it will move to the next phase. If the voltage is too high, it will enter a safety-shutdown state, preventing overcharging of the battery cell.

Conclusion

The BQ25600YFFR is a highly-advanced single-cell Li-ion or Li-polymer battery charger IC. This chip provides full battery charging control with a true 3-level charge control algorithm, advanced safety features and smart recharge capability. The device is used in a wide range of applications, including portable medical devices, energy harvesting systems and consumer electronics. Its features and working principle make the chip an ideal solution for battery cell charging applications.

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