DS2770AE+

Series:	--
Packaging:	Tube
Part Status:	Discontinued at Digi-Key
Function:	Multi-Function Controller
Battery Chemistry:	Multi-Chemistry
Number of Cells:	--
Fault Protection:	--
Interface:	1-Wire
Operating Temperature:	-20°C ~ 70°C (TA)
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	DS2770

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PMIC - Battery Management With DS2770AE+

The DS2770AE+ is a linear and switch-mode battery management system integrated circuit with various advanced features. This device is ideal for applications like portable devices and automotive battery packs. It is capable of measuring up to 11 battery parameters, including voltage, current, temperature and total charge/discharge capacity. It also has the capability to perform protection and maintenance functions, like cell protection, discharge cutoff and dynamic charge current control. The integrated circuit is extremely efficient, maximizing power system performance.

Application Fields

The DS2770AE+ occupies a prime position in applications with multiple small form-factor batteries. Its features make it ideal for electric vehicles, consumer electronics (like portable radios, speakers, and more), and battery back-up systems.

Working Principle

The DS2770AE+ works on the principle of using an internal control loop to maintain the battery’s state of charge and voltage. The current produced by the battery is monitored to determine the state of the battery, and the integrated circuit can then decide what to do with it. It can either keep it in its current state or change it to balance the voltage.The device has two key components. The first is a current sense amplifier that samples the current from the battery in order to accurately measure the battery status. Secondly, it has an internal processor for controlling the battery. The processor uses these measurements to decide when to charge or discharge the battery, or when to turn off the current supply.The DS2770AE+ measures current voltage and temperature so it can make decisions based on these values. It also provides dynamic charge current control to ensure that the correct amount of power is transferred to the battery. Its protective features ensure that the battery is not overcharged or discharged.In addition, the integrated circuit has multiple other features such as cell-balance protection and temperature-limit protection. With these protections, the battery can be used in safety at its rated capacity.Finally, the integrated circuit is also capable of accurately estimating the total charge/discharge capacity of the battery. This is done by measuring the total accumulated discharge or charge capacity during a cycle and storing it. This information can be used to provide better charge/discharge algorithms and maximize the battery life.

Conclusion

The DS2770AE+ is a feature-rich battery management system with two key components. It can accurately measure up to 11 battery parameters and perform protection and maintenance functions. Its features make it ideal for portable devices, automotive battery packs and electric vehicles. The device has the ability to measure voltage, current, temperature, and total charge/discharge capacity and provides dynamic charge current control and cell-balance protection. This integrated circuit can accurately calculate total charge/discharge capacity and provide better charge/discharge algorithms. Overall, the DS2770AE+ is a valuable device for managing battery systems.

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