Battery over-voltage protection(Min/Max)(V) : 3.85 and 4.65
Analog IC - Other Type:
BATTERY PROTECTOR
Input Voltage-Max:
25 V
JESD-30 Code:
R-PDSO-N8
JESD-609 Code:
e4
Length:
4 mm
Moisture Sensitivity Level:
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:
RECTANGULAR
Package Style:
SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
0.8 mm
Supply Current-Max (Isup):
0.002 mA
Supply Voltage-Max (Vsup):
25 V
Surface Mount:
YES
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au); Matte Tin (Sn)
Terminal Form:
NO LEAD
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Threshold Voltage-Nom:
+4.2V
Time@Peak Reflow Temperature-Max (s):
30
Width:
3 mm
BQ771808DPJT 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 power and ground planes separate, using a solid ground plane, and minimizing trace lengths and widths to reduce EMI and noise.
To ensure accurate battery monitoring and charging, it's crucial to follow the recommended calibration procedure, use a high-precision voltage reference, and consider the effects of temperature and aging on the battery. Additionally, implement a robust charging algorithm that takes into account the battery's chemistry, capacity, and health.
The internal voltage regulator has a limited current capability and may not be suitable for high-current applications. It's essential to consider the power requirements of the system and ensure that the internal regulator can provide the necessary voltage and current. In high-current applications, an external voltage regulator may be required.
The BQ771808DPJT has built-in over-voltage and under-voltage protection, but it's still important to implement external protection circuits to ensure the device and battery are protected from voltage transients and faults. This may include using external voltage supervisors, TVS diodes, and fuses.
The BQ771808DPJT has a maximum junction temperature of 125°C. It's essential to ensure good thermal design practices, such as providing adequate heat sinking, using thermal vias, and keeping the device away from high-temperature components. Additionally, consider the thermal effects of high-current charging and discharging.
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BQ771808DPJT 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.
