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
BQ29440DRBT 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 to minimize noise and EMI.
The BQ29440DRBT is designed to support various battery chemistries, including Li-ion, Li-polymer, and Li-iron phosphate. To configure the device for a specific chemistry, refer to the datasheet and application notes for guidance on setting the correct voltage and current limits, as well as the charge/discharge profiles.
The BQ29440DRBT is designed to support up to 4 cells in series, but it's possible to connect more cells using external components and careful design. However, this may require additional circuitry and may affect the overall system performance and reliability.
The BQ29440DRBT has built-in cell balancing capabilities, which can be configured to balance cells within a certain voltage range. The balancing limits are typically set to ±50 mV, but this can be adjusted depending on the specific application requirements.
The BQ29440DRBT uses an I2C interface for communication, which allows for easy integration with microcontrollers and other devices. The device also has a dedicated interrupt pin for alerting the host controller to changes in the battery status or faults.
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BQ29440DRBT Overview
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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.
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