The BQ2004EPN requires careful layout and placement to ensure proper operation. TI recommends placing the IC near the battery, using a solid ground plane, and keeping the sense lines short and away from noise sources. A 4-layer PCB is recommended, with the top layer for signals, the second layer for the power plane, the third layer for the ground plane, and the bottom layer for the battery connection.
To minimize high-frequency noise and EMI, use a ferrite bead or a 10-ohm resistor in series with the VCC pin, and add a 10nF capacitor between VCC and GND. Additionally, use a shielded cable for the sense lines and keep them away from noise sources. Ensure the PCB layout is optimized for low EMI and noise radiation.
The BQ2004EPN's fuel gauge accuracy is typically ±5% over the entire operating range. To improve accuracy, calibrate the fuel gauge by measuring the battery's capacity and adjusting the gauge's settings accordingly. Additionally, ensure the sense resistors are accurate and stable, and that the battery's temperature is within the recommended range.
The BQ2004EPN's sleep mode can be implemented by pulling the SLEEP pin low. In sleep mode, the IC's power consumption is reduced to approximately 10uA. This mode is useful for extending battery life in low-power applications. To wake the IC from sleep mode, pull the SLEEP pin high or apply a valid voltage to the VCC pin.
The BQ2004EPN is designed for low-to-moderate current applications. For high-current applications, the IC's internal sense resistors may not be suitable, and external sense resistors may be required. Additionally, the IC's power dissipation and thermal management should be carefully considered to ensure reliable operation.
Trust Checks
This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
BQ2004EPN Overview
Use the download button to access the BQ2004EPN schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like BQ200,
or try a keyword search, such as Power Management Circuits
About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
