UCC3911DP-4

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Function:	Battery Protection
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	2
Fault Protection:	Over/Under Voltage, Short Circuit
Interface:	--
Operating Temperature:	-20°C ~ 70°C (TA)
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	UCC3911-4

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UCC3911DP-4 Application Field and Working Principle

The UCC3911DP-4 is a high-efficiency, high-performance analog integrated circuit that is used in the Battery Management PMIC. It is designed to monitor, control and protect rechargeable batteries used in portable systems such as laptops, smartphones, and other mobile devices. The device integrates a power supply, battery charger and monitoring circuit into one package.The UCC3911DP-4 consists of an optimized synchronous rectifier, ultra-low consumption power switch, and application-tuned loop compensation. It is suitable for use in single-cell Li-ion/ Li-polymer/ Ni-Cd/ Ni-MH/ lead-acid system configurations and supports a wide range of operating voltages. The UCC3911DP-4 provides several features such as low operating current, fast enable/ disable, variable switching frequency and on-chip reset with cycle-by-cycle current limitation. It also incorporates built-in features like cycle-by-cycle soft-start, output short-circuit protection, over-temperature protection and output voltage regulation for reliable battery charging.The UCC3911DP-4 uses a high efficiency, low noise and low quiescent current synchronous buck power supply architecture. It utilizes a low resistance n-channel MOSFET in the synchronous rectifier to ensure low power dissipation and high efficiency level. It also provides a wide range of switching frequencies to optimize the system efficiency and performance.The UCC3911DP-4 also features a high accuracy programmable current sensing circuit that lets users precisely control the charge and discharge currents. The device supports short-circuit protection, over-temperature protection, over-voltage protection, and output over-current protection.In addition to its high efficiency, the UCC3911DP-4 offers precision regulation of the output voltage and current. It also incorporates a programmable soft-start function to minimize the inrush current at start-up.Overall, the UCC3911DP-4 is an effective solution for single cell Li-ion/ Li-polymer/ Ni-Cd/ Ni-MH/ lead-acid system battery management. It provides continuous monitoring, protection and control of batteries used in portable system applications. With its high efficiency, low operating current, fast enabling/ disabling time and programmable soft-start feature, the UCC3911DP-4 can optimize the system performance for reliable battery charging.

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