Overview
The BQ27200DRKR is a high-precision, low-power lithium battery fuel gauge IC from Texas Instruments, designed for single-cell lithium-ion (Li-Ion) and lithium-polymer (Li-Polymer) batteries. The device uses proprietary battery voltage monitoring and self-discharge compensation technology to accurately estimate the remaining battery capacity, charge and discharge state (SoC), and battery life. The BQ27200DRKR is suitable for portable devices, Internet of Things (IoT) devices, wearable devices, and other low-power applications.
Specifications
parameter | Numeric |
Battery Type | Single-cell Li-ion/Li-polymer battery |
Operating voltage range | 2.7V to 4.5V |
Typical operating current | 12µA |
Sleep mode current | 2µA |
Communication interface | I²C |
Accuracy error | ±1% |
Remaining capacity estimation | Through voltage curve and temperature compensation |
Package Type | VSON-10 (DRK) |
Operating temperature range | -40°C to +85°C |
BQ27200DRKR’s outstanding features
High-precision battery fuel gauging
uses TI’s proprietary battery model algorithm to accurately estimate the remaining battery capacity, state of charge (SoC) and battery life with an accuracy error as low as ±1% .
Low-power design
Typical operating current is only 12µA , and power consumption in sleep mode is as low as 2µA , making it suitable for low-power applications with long battery life, such as IoT devices and wearable devices.
I²C Communication Interface The
device communicates with the host MCU via the I²C interface, can read battery charge information in real time, and supports remote monitoring and data analysis.
Automatic temperature compensation
provides more accurate battery status monitoring under different environmental conditions through built-in temperature compensation algorithm.
No External Current Sense
Required The power estimation method based on voltage curve is adopted, and no external current sense resistor is required, which simplifies the design and reduces BOM cost.
Compact Package Design
The VSON-10 (DRK) ultra-small package is suitable for high-density PCB design, especially for portable devices with limited space.
Application Areas
BQ27200DRKR is widely used in the following fields due to its high precision, low power consumption and compact design:
Smartphones and tablets
monitor battery power, optimize charge and discharge management, and enhance user experience.
Wearable devices
such as smart bracelets and smart watches can improve battery life and optimize power consumption through accurate battery capacity estimation.
Internet of Things (IoT) devices
remote sensors, wireless modules and other devices monitor battery status in real time and optimize energy management.
wireless audio devices
such as Bluetooth headsets and wireless speakers to prevent excessive discharge from affecting battery life.
Industrial control and medical equipment
monitor the remaining energy of battery-powered equipment to ensure the stability and reliability of equipment operation.
Comparative Analysis: BQ27200DRKR vs. Other Fuel Gauge ICs
Features/Specifications | BQ27200DRKR | Other fuel gauge ICs on the market |
Operating voltage range | 2.7V to 4.5V | 3V to 5V |
Power consumption (typical operating mode) | 12µA | 20µA to 50µA |
Sleep mode power consumption | 2µA | 5µA to 10µA |
Power calculation method | Voltage curve + temperature compensation | Current detection + voltage detection |
Accuracy error | ±1% | ±3% or higher |
Communication interface | I²C | I²C, HDQ |
Package | VSON-10 | QFN, TSSOP |
The BQ27200DRKR offers significant advantages in power consumption, accuracy, and computational methods, making it suitable for energy-efficient battery-powered devices.
Manufacturer introduction: Texas Instruments
Texas Instruments is a leading global supplier of semiconductor solutions, focusing on providing high-performance analog and embedded processor products. The BQ27200DRKR is an important member of TI’s fuel gauging IC product line. With its precise battery management capabilities, low power consumption and compact packaging design, it is widely used in consumer electronics and industrial equipment.
Why choose BQ27200DRKR?
The BQ27200DRKR uses a high-precision fuel gauging algorithm and supports low-power operation, making it an ideal choice for long-life applications such as portable devices, wearable devices, IoT sensors , etc. Its I²C interface, compact package, and temperature compensation capabilities make it an ideal solution for smart battery management.
FAQ
Q1: How does the BQ27200DRKR measure battery charge?
A: Based on the battery voltage curve and temperature compensation algorithm, the device can accurately estimate the remaining battery capacity without an external current sense resistor. Its internal algorithm combines battery discharge characteristics, temperature changes and load conditions to dynamically adjust the charge calculation to ensure measurement accuracy in different environments. In addition, the IC also supports a charge learning mode, which can optimize the battery model during use and improve the accuracy of long-term use.
Q2: Is this device suitable for 3.7V lithium batteries?
A: Yes, the BQ27200DRKR is suitable for single-cell lithium-ion or lithium-polymer batteries between 2.7V and 4.5V, and is compatible with 3.7V standard lithium batteries. Its flexible operating voltage range enables it to adapt to different types of lithium battery configurations and provide stable power monitoring throughout the discharge cycle. Whether it is consumer electronics, portable medical devices, or industrial applications, the device can ensure accurate battery status estimation and improve the device’s endurance management capabilities.
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