Battery over-voltage protection(Min/Max)(V) : 3 and 4.575
Adjustable Threshold:
YES
Analog IC - Other Type:
BATTERY MONITOR/PROTECTOR
Input Voltage-Max:
25 V
JESD-30 Code:
R-PDSO-G20
JESD-609 Code:
e4
Length:
6.5 mm
Moisture Sensitivity Level:
2
Number of Channels:
1
Number of Functions:
1
Number of Terminals:
20
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
TSSOP
Package Equivalence Code:
TSSOP20,.25
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
1.2 mm
Supply Current-Max (Isup):
0.009 mA
Supply Voltage-Max (Vsup):
25 V
Supply Voltage-Min (Vsup):
3 V
Supply Voltage-Nom (Vsup):
16 V
Surface Mount:
YES
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Threshold Voltage-Nom:
+3.7V
Time@Peak Reflow Temperature-Max (s):
30
Width:
4.4 mm
BQ7790521PW 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 is done through the I2C interface using the bq7790521PW's calibration commands. The device comes with a default calibration, but it's recommended to perform a custom calibration for optimal accuracy. TI provides a calibration guide and software tools to assist with this process.
The bq7790521PW's SOC measurement accuracy is typically ±5% over the entire operating range, but this can vary depending on the specific battery chemistry, age, and operating conditions. TI recommends characterizing the device with the specific battery type and usage scenario to determine the actual accuracy.
Yes, the bq7790521PW supports multiple battery chemistries, including Li-ion, Li-polymer, and Li-iron phosphate. However, the device may require different calibration settings and compensation tables for each chemistry type.
The bq7790521PW does not have built-in balancing capabilities, but it can be used in conjunction with external balancing circuits or ICs. TI recommends using a dedicated balancing IC, such as the bq79606A, to ensure proper balancing and safety.
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BQ7790521PW 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.
