DS2781E
Standalone fuel gauge ICs for battery management in compact SMD packages
Manufacturer： maxim
series introduction
# DS2781E Product Series Introduction
## 1. Overview
The DS2781E product series represents a cutting - edge solution in the field of battery management. Developed by a leading semiconductor company, these devices are engineered to provide accurate and reliable battery monitoring and protection for a wide range of applications. Whether it's in portable electronics, electric vehicles, or industrial battery systems, the DS2781E series offers a comprehensive set of features to ensure optimal battery performance and longevity.
## 2. Key Features
### 2.1 High - Precision Battery Monitoring
- **Voltage Sensing**: The DS2781E is equipped with a high - resolution analog - to - digital converter (ADC) that can accurately measure the battery voltage. This allows for precise determination of the battery's state of charge (SOC). With a measurement accuracy of up to [X]%, it can detect even small changes in voltage, enabling more accurate prediction of battery life and performance.
- **Current Measurement**: It can measure both charge and discharge currents with high precision. The device uses a low - resistance sense resistor to minimize power loss while accurately capturing the current flowing in and out of the battery. This feature is crucial for applications where accurate power management is required, such as in electric vehicles where precise current monitoring helps in optimizing the battery's range and performance.
- **Temperature Sensing**: Temperature has a significant impact on battery performance and safety. The DS2781E includes an integrated temperature sensor that can monitor the battery's temperature in real - time. This information can be used to adjust the charging and discharging parameters to prevent overheating and ensure the battery operates within a safe temperature range.
### 2.2 Battery Protection
- **Over - Voltage Protection**: To prevent damage to the battery due to excessive charging voltage, the DS2781E has built - in over - voltage protection. When the battery voltage exceeds a pre - set threshold, the device can automatically disconnect the charging circuit, protecting the battery from over - charging and potential safety hazards.
- **Under - Voltage Protection**: Similarly, under - voltage protection is provided to prevent the battery from being discharged below a safe level. When the battery voltage drops below the specified limit, the device can cut off the discharge path, preserving the battery's health and preventing irreversible damage.
- **Over - Current Protection**: In cases where excessive current flows through the battery, such as during a short - circuit, the DS2781E can quickly detect the over - current condition and take appropriate action. It can either limit the current or disconnect the circuit to protect the battery and the connected devices.
### 2.3 Communication Interface
- **I²C Interface**: The DS2781E series features an I²C communication interface, which is a widely used and standardized serial communication protocol. This interface allows for easy integration with microcontrollers and other digital devices. Through the I²C interface, the host device can read the battery's voltage, current, temperature, and other parameters, as well as configure the device's settings, such as protection thresholds and measurement intervals.
### 2.4 Low Power Consumption
- Designed with power efficiency in mind, the DS2781E consumes very low power during normal operation. This is especially important for battery - powered applications where minimizing power consumption is crucial to extend the battery's runtime. The device has a low standby current, ensuring that it does not drain the battery when the system is in idle mode.
## 3. Applications
### 3.1 Portable Electronics
- In smartphones, tablets, and laptops, the DS2781E can accurately monitor the battery's state of charge, allowing the device to provide more accurate battery life estimates to the user. It also protects the battery from over - charging and over - discharging, which helps in prolong
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