DS2778G+

Series:	--
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Function:	Multi-Function Controller
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	2
Fault Protection:	Over Current, Over Voltage
Interface:	I²C
Operating Temperature:	-20°C ~ 70°C (TA)
Package / Case:	14-WFDFN Exposed Pad
Supplier Device Package:	14-TDFN-EP (3x5)
Base Part Number:	DS2778

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PMIC - Battery Management

The DS2778G+ (G+) is a programmable lithium-ion Li+ battery charge and fuel gauge IC that provides the circuitry necessary to monitor, protect, and control single-cell Li+ rechargeable batteries in portable electronic applications. The G+ is the latest device in a family of fuel gauge and protection devices from Dallas Semiconductor (now Maxim Integrated). It offers improved features, including charge current and voltage temperature compensation, extended discharge temperature range, reduced power consumption and protected data registers for enhanced product security.The G+ provides system designers with proven, accurate performance within a single package and simplifies the design of Li+ battery-powered applications. This product is exceptionally easy to use and allows a quick design cycle and time to market. With its simple analog and digital interfaces, the G+ is extremely flexible and configurable, making it suitable for use in a wide range of consumer, consumer/industrial and medical applications.The device provides complete protection for the single-cell Li+ battery, including cell overvoltage, cell undervoltage, over- and under-temperature, overcharge, and short circuit protection. The G+ implements a Charge State Protection mechanism to ensure that the battery is properly charged by controlling the current and voltage of the charger based on the safety parameters set by the user and charging profile. The current and voltage factors are monitored during charging and are compensated for temperature variation and cell resistance. The device also allows for asynchronous data communication between the host system and the charging system.Due to its safety features, the G+ is a key component for Li+ battery charging systems for mobile and portable devices. It is also widely used in medical devices and industrial systems. The device communicates with the host system using a UART protocol and can be used with charge controllers and ultra-low power MCUs. Thanks to its advanced features and high performance, the G+ is an ideal choice for powering Smartphones, tablets, medical devices and other items powered by Li+ rechargeable batteries.The G+ operates on a highly precise VFC (Voltage, Frequency, and Current) algorithm. The current and voltage are monitored constantly, and the algorithm adjusts the voltage and current of the charger accordingly. During charging, the device controls the voltage and current of the charger based on the safety parameters set by the user and the charging profile specified in the user profile. The G+ also incorporates a Charge State Protection (CSP) algorithm to ensure that the battery is never overcharged. The device also supports trickle and recharge charging modes, allowing the user to select from a variety of charging modes.The G+ also provides a range of safety features to protect both the battery and the host system. The device prevents undervoltage and overvoltage conditions, as well as over- and under-temperature conditions. It also monitors the state of the battery when it is connected to the charger, allowing the charger to shut off if any safety parameters are exceeded. The device also provides support for chip detect, battery thermal blackout and peak current protection in order to maximize battery life and safety.In addition to its sophisticated safety features, the G+ boasts several features that make it particularly user-friendly. Its dual-channel interface allows for asynchronous communication between the host system and the charger system, which simplifies the implementation of the charging profile into the host system. Furthermore, the device\'s non-volatile memory provides a small write space for safekeeping of user profiles, enabling quick access to charging profiles in the case of a system reset.Overall, the G+ is a highly sophisticated device offering a range of features to ensure that single-cell Li+ rechargeable batteries are properly charged and safe. From a hardware point of view, the G+ is a cost-effective and dependable choice for powering Li+ rechargeable batteries. Furthermore, its user-friendly features, such as dual-channel interface and non-volatile memory, make it a perfect fit for a wide range of applications, from mobile and portable devices to medical and industrial systems.

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