UC3906DW

Series:	--
Packaging:	Tube
Part Status:	Not For New Designs
Battery Chemistry:	Lead Acid
Number of Cells:	--
Current - Charging:	--
Programmable Features:	Current
Fault Protection:	--
Charge Current - Max:	--
Battery Pack Voltage:	--
Voltage - Supply (Max):	40V
Interface:	--
Operating Temperature:	0°C ~ 70°C (TA)
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	UC3906

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！UC3906DW Application Field and Working PrincipleUC3906DW is a high-efficiency, synchronous PWM buck battery charger from UC\'s ChargeIQ series of power-management ICs designed for advanced battery charging solutions. It is a complete, high-efficiency, synchronous PWM buck battery charger for single LiFePO4 cells. The UC3906DW can be used for fast-charge, stand-alone applications where there is no direct connection to the main power supply.The UC3906DW is designed to provide universal compatibility with all popular LiFePO4 chemistries and controllable fast-charge capability. It supports combined charge/discharge, charge termination, and automated cell balancing. It provides high charging efficiency, lower component count and cost, and improved user safety.Application Fields:The UC3906DW is mainly used for fast charging and stand-alone applications in the industrial, medical, and consumer markets. Its flexibility and wide compatibility with various LiFePO4 chemistries make it well-suited for applications such as consumer electronics, medical and health-care devices, industrial machinery, and consumer appliances.Working Principle:The UC3906DW applies a synchronous PWM buck architecture to provide high efficiency. The charger operates in a 3-mode cycle to provide a fast-charge rate based on the actual battery voltage. The UC3906DW uses an external current-sense resistor (RSense) to detect the current through the battery and set the input voltage accordingly.The UC3906DW keeps the battery voltage in the overcharge threshold and limits the current into the battery according to the limits set by the timer. The timer can be programmed to provide the appropriate amount of charge time the battery requires. The cell balancing function ensures the voltage of each cell in the battery is equal.The UC3906DW also provides protection against overload, overcharge, and over temperature.Conclusion:The UC3906DW from UC is a versatile and easy-to-use synchronous PWM buck battery charger designed for fast-charge, stand-alone applications. It features wide compatibility with different LiFePO4 chemistries, efficient operation, and automated cell balancing. With its multiple protection features, the UC3906DW is the ideal solution for a wide range of industrial, medical, and consumer applications.

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