Battery over-voltage protection(Min/Max)(V) : 4.15 and 4.25
Adjustable Threshold:
YES
Analog IC - Other Type:
BATTERY PROTECTOR
Input Voltage-Max:
50 V
JESD-30 Code:
R-PDSO-G38
JESD-609 Code:
e4
Length:
9.7 mm
Moisture Sensitivity Level:
2
Number of Channels:
1
Number of Functions:
1
Number of Terminals:
38
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
TSSOP
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
1.2 mm
Supply Voltage-Max (Vsup):
35 V
Supply Voltage-Min (Vsup):
5.6 V
Supply Voltage-Nom (Vsup):
28.8 V
Surface Mount:
YES
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
GULL WING
Terminal Pitch:
0.5 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Width:
4.4 mm
BQ77908ADBTR Frequently Asked Questions (FAQs)
Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good design practices, such as keeping the sense lines short and away from noise sources, using a solid ground plane, and placing the device close to the battery.
Calibration involves setting the device's internal registers to match the specific battery characteristics. TI provides a calibration guide and software tools, such as the Fuel Gauge Calibration Tool, to help with this process.
The BQ77908ADBTR has an SOC accuracy of ±5% over the entire operating range, making it suitable for most battery-powered applications. However, this accuracy can be affected by factors like battery age, temperature, and charging/discharging patterns.
Yes, the BQ77908ADBTR supports multiple battery chemistries, including lithium-ion, lithium-polymer, and lead-acid. However, the device may require different calibration settings and compensation algorithms for each chemistry.
The BQ77908ADBTR has a built-in self-discharge compensation algorithm that adjusts the SOC measurement based on the battery's self-discharge rate. This ensures accurate SOC readings even when the battery is not in use.
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BQ77908ADBTR Overview
Use the download button to access the BQ77908ADBTR schematic symbol, PCB footprint, and 3D model.
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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.
