Battery over-voltage protection(Min/Max)(V) : 4.325 and 4.375
Adjustable Threshold:
NO
Analog IC - Other Type:
SECONDARY BATTERY PROTECTOR
Input Voltage-Max:
28 V
JESD-30 Code:
S-PDSO-N8
JESD-609 Code:
e4
Length:
3 mm
Moisture Sensitivity Level:
2
Number of Channels:
1
Number of Functions:
1
Number of Terminals:
8
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
HVSON
Package Shape:
SQUARE
Package Style:
SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Cel):
260
Qualification Status:
Not Qualified
Seated Height-Max:
1 mm
Supply Voltage-Max (Vsup):
25 V
Supply Voltage-Min (Vsup):
4 V
Supply Voltage-Nom (Vsup):
17 V
Surface Mount:
YES
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
NO LEAD
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Width:
3 mm
BQ29440DRBR Frequently Asked Questions (FAQs)
Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow the guidelines in the TI application note 'Battery Management System (BMS) PCB Layout Guidelines' (SLUA623) for optimal performance and thermal management.
The BQ29440DRBR is a highly configurable device, and the configuration depends on the specific battery chemistry and application requirements. TI provides a software tool called 'Battery Management Studio' (BMS) that allows you to configure the device and generate the necessary code for your microcontroller.
The BQ29440DRBR can handle charging currents up to 10A, but the actual maximum current depends on the specific application and the thermal management of the device. It's recommended to follow the thermal design guidelines in the datasheet to ensure reliable operation.
Yes, the BQ29440DRBR can be used with multiple battery cells in series, but it's recommended to use a separate device for each cell or group of cells to ensure accurate monitoring and control. TI provides a reference design for multi-cell battery management systems that can be used as a starting point.
The accuracy of the SOC estimation depends on various factors, including the battery chemistry, age, and operating conditions. TI recommends using a combination of voltage, current, and temperature measurements, along with advanced algorithms and calibration techniques, to ensure accurate SOC estimation. The BQ29440DRBR provides a range of features to support accurate SOC estimation, including a Coulomb counter and a voltage-based SOC estimator.
Trust Checks
This model has been verified by system checks.
System Verified
Sponsored
BQ29440DRBR Overview
Use the download button to access the BQ29440DRBR schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like BQ294,
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.
